New Castle, Delaware, United States of America: What to pack, what to wear, and when to go [2023]

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Ready to pack for New Castle, Delaware, United States of America? If you're planning to go to New Castle, this article contains some important information about when to go, what to wear, and what to pack.

Contents

When to go to New Castle, Delaware, United States of America

Based on the climate and weather in New Castle, Delaware, United States of America, the best time to go is September. See below for details.

What to wear/what to pack for New Castle, Delaware, United States of America

Already know when you're traveling?

Here are some general tips on what to wear in New Castle, as well as several items to remember to pack when traveling there.

What to wear/what to pack for New Castle, Delaware, United States of America by month

January

January for New Castle is pretty cool and somewhat rainy. Temperatures average in the high 30s F (single digits C) during the day. It rains 5-10 days this month and snows occasionally.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airlines repeatedly losing bags these days, an AirTag can find it anywhere in the world: AirTag for iPhones.

  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your belongings.

  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

Comfort + Essentials
  • Travel neck pillow

    Our fave is this one

  • Luggage scale to avoid fees

    Airlines charge excessive prices for overweight luggage. Avoid penalties with this

  • Power bank for devices

    A portable power bank, like this one

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Be careful to get the correct kind. The majority of adapters currently sold are just plug changers and expect your devices to adjust the voltage themselves. If your electronics can't do that they could get destroyed. This one works in most locations.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

February

Traveling to New Castle in February, you will notice that it can be very chilly. Expect it to rain a bit less than half of the time and snow sometimes. Daytime temperatures are in the low 40s F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your stuff.

  • AirTag to track your luggage

    With airports repeatedly losing bags nowadays, an AirTag can help you find it anywhere in the world: AirTag for iPhones.

  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel pillow

    Our fave is this one

  • Power bank for devices

    A portable power bank, like this one

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Take care to pick the correct type. Most adapters available online are just plugs and expect your devices to convert the voltage themselves. If yours can't do that they could get fried. This one is sufficent for most areas.

  • Luggage scale to avoid fees

    Airlines charge huge penalties for overweight luggage. Avoid penalties with this

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

March

March in New Castle can be very chilly and somewhat rainy. Temperatures average in the low 50s F (single digits C) during the day. It rains regularly.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your things.

  • AirTag to track your luggage

    With airlines always losing things nowadays, an AirTag can help you locate it anywhere on earth: AirTag for iPhones.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

Comfort + Essentials
  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel pillow

    Our favorite is this one

  • Travel adapter

    A plug adapter that supports outlet types A and B. Check that you choose the right type. A lot of adapters available are just plugs and expect your electronics to adjust the voltage themselves. If your electronics can't do that they could get destroyed. This one should be appropriate for most places.

  • Luggage scale to avoid fees

    Airlines charge huge prices for overweight luggage. Avoid surcharges with this

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

April

April for New Castle is relatively cool and somewhat rainy. Temperatures average in the low 60s F (high 10s C) during the day. It rains about a third of the time.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airports always losing things nowadays, an AirTag can locate it anywhere on earth: AirTag for iPhones.

  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your belongings.

  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

Comfort + Essentials
  • Luggage scale to avoid fees

    Airlines charge large amounts for overweight luggage. Save money with this

  • Travel adapter

    A plug adapter that supports outlet types A and B. Check that you pick the necessary type. The majority of adapters available are just plug changers and require your electronics to adjust the voltage themselves. If your devices can't do that they could burn up. This one should work in most locations.

  • Travel pillow

    What we like is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Power bank for devices

    A portable power bank, like this one

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

May

May for New Castle is balmy and somewhat rainy. Temperatures average in the low 70s F (low 20s C) during the day. It rains a bit less than half of the time.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • AirTag to track your luggage

    With airlines always losing luggage recently, an AirTag can help you locate it anywhere anywhere: AirTag for iPhones.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your belongings.

  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

Comfort + Essentials
  • Travel pillow

    A great choice is this one

  • Luggage scale to avoid fees

    Airlines charge excessive penalties for overweight luggage. Avoid surcharges with this

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Make sure to find the correct kind. Most adapters currently available are simply plugs and expect your electronics to change the voltage themselves. If your devices can't do that they could burn up. This one should be sufficient for most countries.

  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

June

In June, New Castle is a perfect temperature and somewhat rainy. Temperatures routinely are in the low 80s F (high 20s C) and sometimes jump into the low 90s F (low 30s C) range. At night, lows are in the low 60s F (mid 10s C). This is also a rainy time for New Castle, with several of the days of the month having rain. In June, humidity reaches as high as 60%.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your belongings.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

  • AirTag to track your luggage

    With airlines repeatedly losing bags recently, an AirTag can locate it anywhere in the world: AirTag for iPhones.

Comfort + Essentials
  • Travel neck support pillow

    A good option is this one

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Check that you choose the correct kind. The majority of adapters that you can buy are simply plugs and expect your electronics to adjust the voltage themselves. If yours can't do that they could get fried. This one should work in most places.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

    Airlines charge huge prices for overweight luggage. Avoid penalties with this

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

July

If you visit New Castle during July, you might find that it is constantly hot. Temperatures tend to hover around the 80s F (low 30s C) during the day, while at night they can dip into the 60s F (high 10s C). Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain 5-10 days this month.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your stuff.

  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

  • AirTag to track your luggage

    With airports frequently losing luggage nowadays, an AirTag can locate it anywhere in the world: AirTag for iPhones.

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Power bank for devices

    A portable power bank, like this one

  • Travel adapter

    A plug adapter that supports outlet types A and B. Check that you get the necessary type. The vast majority of adapters on sale are just plugs and expect your electronics to adjust the voltage themselves. If yours can't do that they could get fried. This one should be appropriate for most places.

  • Travel pillow

    Our fave is this one

  • Luggage scale to avoid fees

    Airlines charge excessive prices for overweight luggage. Avoid penalties with this

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

August

August here is pretty consistently hot. Temperatures average in the low 80s F (high 20s C) during the day. It rains regularly.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airports repeatedly losing things recently, an AirTag can locate it anywhere on earth: AirTag for iPhones.

  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your things.

Comfort + Essentials
  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel neck pillow

    Our fave is this one

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Check that you choose the right type. Many adapters currently sold are just plugs and expect your electronics to change the voltage themselves. If your electronics can't do that they could burn up. This one is sufficent for most areas.

  • Luggage scale to avoid fees

    Airlines charge huge amounts for overweight luggage. Avoid surcharges with this

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

September

September in New Castle is a perfect temperature. The rain can amount to several inches/centimeters. During this time, temperatures average in the 60s F (high 10s C) to high 70s F (mid 20s C), although night temperatures can dip into the low 50s F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your things.

  • AirTag to track your luggage

    With airlines frequently losing bags these days, an AirTag can help you find it anywhere on earth: AirTag for iPhones.

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Luggage scale to avoid fees

    Airlines charge large penalties for overweight luggage. Avoid surcharges with this

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Take care to find the necessary type. Most adapters currently being sold are simply plug changers and require your electronics to convert the voltage themselves. If your electronics can't do that they could get fried. This one should work in most locations.

  • Power bank for devices

    A portable power bank, like this one

  • Travel pillow

    A top rated pillow is this one

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

October

If you vacation in New Castle during October, you will probably notice that it is mild. Temperatures tend to hover around the 60s F (high 10s C) during the day, while at night they can dip into the 40s F (single digits C). Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain regularly.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your belongings.

  • AirTag to track your luggage

    With airlines always losing bags nowadays, an AirTag can help you locate it anywhere anywhere: AirTag for iPhones.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Luggage scale to avoid fees

    Airlines charge huge penalties for overweight luggage. Avoid penalties with this

  • Power bank for devices

    A portable power bank, like this one

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Make sure to find the correct type. A lot of adapters available are just plugs and expect your electronics to adjust the voltage themselves. If your electronics can't do that they could burn up. This one should be sufficient for most locations.

  • Travel neck support pillow

    A top rated pillow is this one

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

November

November in New Castle is cold. The average overnight temperatures in the area are in the 30s F (single digits C). It tends to rain about a third of the time. But the colder weather doesn't bring low humidity, which is in the 50% to 60% range on average.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airports always losing luggage recently, an AirTag can help you find it anywhere on earth: AirTag for iPhones.

  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your things.

Comfort + Essentials
  • Travel pillow

    An excellent option is this one

  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Luggage scale to avoid fees

    Airlines charge large amounts for overweight luggage. Avoid surcharges with this

  • Travel adapter

    A plug adapter that supports outlet types A and B. Ensure that you get the correct type. Many adapters for sale now are just plug changers and expect your electronics to convert the voltage themselves. If yours can't do that they could get destroyed. This one is sufficent for most locations.

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

December

December in New Castle is brisk and somewhat rainy. The average overnight temperatures in the area are in the high 20s F (single digits below 0 C). It tends to rain regularly. But the colder weather doesn't bring low humidity, which is in the 60% to 60% range on average.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airlines frequently losing things recently, an AirTag can find it anywhere anywhere: AirTag for iPhones.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your stuff.

  • Voice and data SIM card

    A SIM card that works in New Castle. A good global SIM card works in most countries, but check the country list before buying.

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Be careful to get the right kind. Most adapters currently being sold are just plug changers and expect your electronics to convert the voltage themselves. If yours can't do that they could get destroyed. This one is sufficent for most places.

  • Travel neck pillow

    Our fave is this one

  • Luggage scale to avoid fees

    Airlines charge huge amounts for overweight luggage. Avoid surcharges with this

  • Power bank for devices

    A portable power bank, like this one

If you intend to visit the must-see New Castle Presbyterian Church, it's recommended to wear modest clothing:

If you go to the Old Library Museum, wear museum-appropriate clothing and take:

About your travel guide

Hi! I'm Dev. I've traveled all over the world and in my travels, I have made many packing lists. In this series, my team and I have compiled the most useful information, as well as things we couldn't live without, to help you plan your trip.

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