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

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Traveling to New Castle, Delaware, United States of America? If you're planning to go to New Castle, the following is 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

If you are traveling to New Castle in January, you will notice that it is pretty cool and somewhat rainy. Expect it to rain about a third of the time and snow sometimes. Daytime temperatures are in the high 30s 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.

  • Anti-theft backpack

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

  • 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 adapter

    A plug adapter that supports outlet types A and B. Make sure to pick the correct kind. The vast majority of adapters for sale now are simply plug changers and expect your electronics to change the voltage themselves. If yours can't do that they could burn up. This one should work in most places.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel neck support pillow

    A great choice is this one

  • Power bank for devices

    A portable power bank, like this one

  • Ultralightweight travel stroller

    This stroller weighs almost 10 pounds and folds to the size of a big book.

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

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

February

If you are traveling to New Castle in February, you will notice that it can be brisk. Expect it to rain regularly and snow once in a while. Daytime temperatures are in the low 40s F (single digits C).

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.

  • Anti-theft backpack

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

Comfort + Essentials
  • Folding travel stroller

    This stroller weighs just 10 pounds and folds to the size of a big book.

  • Travel neck support pillow

    Our fave is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel adapter

    A plug adapter that supports outlet types A and B. Ensure that you choose the correct kind. The vast majority of adapters for sale now are just plugs and require your devices to change the voltage themselves. If your devices can't do that they could burn up. This one is sufficent for most countries.

  • Power bank for devices

    A portable power bank, like this one

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

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

March

If you visit New Castle during March, you may see that it can be brisk and somewhat rainy. Temperatures tend to hover around the low 50s F (single digits C) during the day, while at night they can dip into the low 30s F (single digits C). Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain 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.

  • Anti-theft backpack

    For a little peace of mind, 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
  • Super portable foldable travel stroller

    This stroller weighs just 10 lbs and folds to the size of a big book.

  • Travel adapter

    A plug adapter that supports outlet types A and B. Be careful to pick the correct kind. A lot of adapters available are simply plugs and require your electronics to convert the voltage themselves. If your electronics can't do that they could get destroyed. This one should work in most locations.

  • Travel neck pillow

    A top rated pillow 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

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

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

April

If you go to New Castle in April, you will notice that it is crisp and somewhat rainy. Expect it to rain a bit less than half of the time. Daytime temperatures are in the low 60s F (high 10s 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.

  • Anti-theft backpack

    For a little peace of mind, 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. Make sure to choose the correct type. Most adapters available online are just plugs and expect your electronics to change the voltage themselves. If your devices can't do that they could get destroyed. This one works in most areas.

  • Power bank for devices

    A portable power bank, like this one

  • Travel pillow

    What we like is this one

  • Easy folding travel stroller

    This stroller weighs almost 10 pounds and folds to the size of a big book.

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

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

May

May for New Castle is mild 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
  • 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 belongings.

Comfort + Essentials
  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Make sure to get the right kind. The majority 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 sufficient for most locations.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Ultralightweight travel stroller

    This stroller weighs almost 10 lbs and folds to the size of a big book.

  • Power bank for devices

    A portable power bank, like this one

  • Travel neck support pillow

    Our favorite is this one

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

If you visit 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 occasionally 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
  • 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.

  • Anti-theft backpack

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

Comfort + Essentials
  • Travel neck pillow

    A great choice is this one

  • Power bank for devices

    A portable power bank, like this one

  • Ultralightweight travel stroller

    This stroller is only 10 lbs and folds to the size of a big book.

  • Travel adapter

    A plug adapter that supports outlet types A and B. Be careful to pick the necessary type. The majority of adapters available are simply plugs and expect your electronics to adjust the voltage themselves. If your electronics can't do that they could burn up. This one works in most places.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

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

July

July in New Castle is extremely hot. The rain can amount to several inches/centimeters. During this time, temperatures average in the 80s F (low 30s C), although night temperatures can dip into the low 60s F (mid 10s C).

What to wear/what to pack:

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

    For a bit of 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.

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

  • Ultralightweight travel stroller

    This stroller weighs only 10 pounds and folds to the size of a big book.

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Make sure to pick the necessary kind. Most adapters on sale are just plugs and expect your electronics to change the voltage themselves. If yours can't do that they could burn up. This one works in most locations.

  • Travel pillow

    Our fave is this one

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

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

August

August in New Castle is hot. The rain can amount to several inches/centimeters. During this time, temperatures average in the low 80s F (high 20s C), although night temperatures can dip into the low 60s F (mid 10s 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.

  • Anti-theft backpack

    For a bit of 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
  • Voltage adapter

    A plug adapter that supports outlet types A and B. Check that you pick the right type. Most adapters on sale are just plugs and require your devices to convert the voltage themselves. If yours can't do that they could get destroyed. This one should work in most places.

  • 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 favorite is this one

  • Super portable foldable travel stroller

    This stroller is only 10 lbs and folds to the size of a big book.

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

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

September

September in New Castle is warm. 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
  • 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.

  • Anti-theft backpack

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

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Ultralightweight travel stroller

    This stroller weighs just 10 lbs and folds to the size of a big book.

  • Travel adapter

    A plug adapter that supports outlet types A and B. It's important that you find the correct kind. Most adapters on sale are simply plug changers and expect your devices to convert the voltage themselves. If yours can't do that they could get destroyed. This one is sufficent for most places.

  • Power bank for devices

    A portable power bank, like this one

  • Travel pillow

    A great choice is this one

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

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

October

October is balmy. Temperatures average in the 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
  • 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 protection, an anti-theft backpack protects your belongings.

  • Money/passport pouch

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

Comfort + Essentials
  • Folding travel stroller

    This stroller weighs just 10 lbs and folds to the size of a big book.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Be careful to find the correct kind. The vast majority of adapters available online are just plug changers and require your devices to adjust the voltage themselves. If your electronics can't do that they could burn up. This one works in most areas.

  • Power bank for devices

    A portable power bank, like this one

  • Travel neck support pillow

    A top rated pillow is this one

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

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

November

November in New Castle can be very chilly. The average overnight temperatures in the area are in the 30s F (single digits C). It tends to rain regularly. 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.

  • 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.

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

  • Easy folding travel stroller

    This stroller weighs only 10 pounds and folds to the size of a big book.

  • Travel pillow

    What we like is this one

  • Travel adapter

    A plug adapter that supports outlet types A and B. It's important that you choose the right kind. Many adapters for sale now are simply plug changers and expect your electronics to change the voltage themselves. If your electronics can't do that they could burn up. This one should be sufficient for most locations.

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

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

December

Traveling to New Castle in December, you will notice that it is brisk and somewhat rainy. Expect it to rain a bit less than half of the time. Daytime temperatures are in the low 40s F (single digits C).

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.

  • Anti-theft backpack

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

Comfort + Essentials
  • Travel neck support pillow

    Our fave 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

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Be careful to get the right type. Most adapters for sale now are simply plug changers and require your electronics to adjust the voltage themselves. If yours can't do that they could get destroyed. This one should be sufficient for most countries.

  • Ultraportable travel stroller

    This stroller weighs only 10 pounds and folds to the size of a big book.

If you plan to visit the majestic New Castle Presbyterian Church, it's worthwhile to wear modest clothing:

If you visit 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.

Check out our guides for these other locations: Hanmer Springs, New Zealand, New Plymouth, New Zealand, Pakse, Laos, Bengbu, China, Hastings, Minnesota, United States of America, Syracuse, Italy, Menaggio, Italy, Pašman, Croatia, Bagan, Myanmar, Thanbyuzayat, Myanmar, and Ellora, India.