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

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Ready to pack for Islip, New York, United States of America? If you're planning to go to Islip, here is some important information about when to go, what to wear, and what to pack.

Contents

When to go to Islip, New York, United States of America

Based on the climate and weather in Islip, New York, United States of America, the best time to go is August. See below for details.

What to wear/what to pack for Islip, New York, United States of America

Already know when you're traveling?

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

What to wear/what to pack for Islip, New York, United States of America by month

January

January here is very cold and somewhat rainy. Temperatures average in the high 30s F (single digits C) during the day. It rains regularly and snows sometimes.

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 belongings.

  • AirTag to track your luggage

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

  • Voice and data SIM card

    A SIM card that works in Islip. 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

  • Power bank for devices

    A portable power bank, like this one

  • Travel neck pillow

    An excellent option is this one

  • Voltage adapter

    A plug adapter that supports outlet types A and B. It's important that you find the correct kind. The majority of adapters currently available are simply plugs and expect your electronics to convert the voltage themselves. If yours 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

  • Luggage scale to avoid fees

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

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

February

If you are traveling to Islip in February, you will notice that it is freezing and somewhat rainy. Expect it to rain a bit less than half of the time and snow occasionally. Daytime temperatures are in the high 30s F (single digits 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 things.

  • AirTag to track your luggage

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

  • Voice and data SIM card

    A SIM card that works in Islip. 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 neck 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

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Ensure that you get the correct type. The vast majority of adapters for sale now are simply plugs and expect your devices to convert the voltage themselves. If yours can't do that they could get fried. This one should be appropriate for most areas.

  • Luggage scale to avoid fees

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

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

March

March in Islip can be very chilly and somewhat rainy. The rain/snow can amount to several inches/centimeters. During this time, temperatures average in the 40s F (single digits C), although night temperatures can dip into the low 20s F (single digits below 0 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 stuff.

  • AirTag to track your luggage

    With airlines constantly losing luggage recently, an AirTag can locate it anywhere on earth: AirTag for iPhones.

  • Voice and data SIM card

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

Comfort + Essentials

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Ensure that you choose the right kind. Most adapters currently being sold are simply plug changers and expect your devices to convert the voltage themselves. If your devices can't do that they could burn up. This one should work in most places.

  • Luggage scale to avoid fees

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

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel pillow

    A great choice is this one

  • Power bank for devices

    A portable power bank, like this one

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

April

If you go to Islip in April, you will notice that it can be chilly and somewhat rainy. Expect it to rain regularly. Daytime temperatures are in the high 50s 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 stuff.

  • Voice and data SIM card

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

  • AirTag to track your luggage

    With airports constantly losing luggage nowadays, an AirTag can locate it anywhere anywhere: AirTag for iPhones.

Comfort + Essentials

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

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

  • Travel pillow

    Our favorite is 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. Make sure to find the right type. The vast majority of adapters available online are simply plug changers and require your devices to adjust the voltage themselves. If yours can't do that they could burn up. This one is sufficent for most locations.

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

May

In May, Islip is mild and somewhat rainy. Temperatures routinely are in the high 60s F (low 20s C) and about half of the time jump into the low 70s F (low 20s C) range. At night, lows are in the high 40s F (single digits C). This is also a rainy time for Islip, with several of the days of the month having rain. In May, humidity reaches as high as 70%.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Anti-theft backpack

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

  • Money/passport pouch

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

  • AirTag to track your luggage

    With airports frequently losing things recently, an AirTag can find it anywhere in the world: AirTag for iPhones.

  • Voice and data SIM card

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

Comfort + Essentials

  • Travel neck support 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

  • Luggage scale to avoid fees

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

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Ensure that you pick the right kind. Many adapters on sale are simply plug changers and expect your devices to adjust the voltage themselves. If your devices can't do that they could get fried. This one should be sufficient for most areas.

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

June

If you vacation in Islip during June, you are likely to notice that it is warm and somewhat rainy. Temperatures tend to hover around the 70s F (mid 20s C) during the day, while at night they can dip into the high 50s F (mid 10s C). Humidity is generally between 60 and 70% during the day. In terms of precipitation, you can expect it to rain 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.

  • 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 Islip. A good global SIM card works in most countries, but check the country list before buying.

  • AirTag to track your luggage

    With airports always losing luggage these days, an AirTag can find it anywhere on earth: AirTag for iPhones.

Comfort + Essentials

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

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

  • Travel adapter

    A plug adapter that supports outlet types A and B. Ensure that you get the correct type. A lot of adapters for sale now are simply plugs and require your devices to change the voltage themselves. If yours can't do that they could burn up. This one should work in most areas.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel neck pillow

    A top rated pillow is this one

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

July

If you go to Islip in July, you will notice that it is warm. Expect it to rain a bit less than half of the time. Daytime temperatures are in the low 80s F (high 20s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • AirTag to track your luggage

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

  • Anti-theft backpack

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

  • 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 Islip. 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

  • Luggage scale to avoid fees

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

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Ensure that you pick the right type. The vast majority of adapters currently being sold are just plug changers and require your devices to adjust the voltage themselves. If your electronics can't do that they could get destroyed. This one works in most places.

  • Travel neck support pillow

    What we like is this one

  • Power bank for devices

    A portable power bank, like this one

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

August

August in Islip is a perfect temperature. The rain can amount to several inches/centimeters. During this time, temperatures average in the low 70s F (low 20s C) to high 70s F (mid 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

  • Voice and data SIM card

    A SIM card that works in Islip. 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 things.

  • AirTag to track your luggage

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

Comfort + Essentials

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

    Airlines charge excessive penalties for overweight luggage. Save money with this

  • Travel pillow

    Our fave is this one

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Take care to pick the correct type. Most adapters for sale now are simply plug changers and expect your electronics to adjust the voltage themselves. If your devices can't do that they could burn up. This one should work in most areas.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

September

September is balmy. Temperatures average in the low 70s F (low 20s C) during the day. It rains 5-10 days this month.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in Islip. 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 peace of mind, an anti-theft backpack protects your belongings.

  • AirTag to track your luggage

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

Comfort + Essentials

  • Travel neck support pillow

    An excellent option is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Luggage scale to avoid fees

    Airlines charge huge prices for overweight luggage. Save money with this

  • Plug adapter

    A plug adapter that supports outlet types A and B. Make sure to get the correct kind. Many 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 should work in most locations.

  • Power bank for devices

    A portable power bank, like this one

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

October

October in Islip is chilly. The rain can amount to several inches/centimeters. During this time, temperatures average in the 50s F (low 10s C) to low 60s F (high 10s C), although night temperatures can dip into the low 40s F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • AirTag to track your luggage

    With airports constantly losing luggage nowadays, an AirTag can help you find it anywhere on earth: 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 Islip. 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

  • Luggage scale to avoid fees

    Airlines charge huge penalties for overweight luggage. Save money with this

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Power bank for devices

    A portable power bank, like this one

  • Plug adapter

    A plug adapter that supports outlet types A and B. Be careful to choose the right kind. The majority of adapters for sale now are just plug changers and require your electronics to convert the voltage themselves. If your electronics can't do that they could burn up. This one should be sufficient for most places.

  • Travel neck pillow

    Our favorite is this one

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

November

If you visit Islip during November, you might notice that it can be very chilly and somewhat rainy. Temperatures tend to hover around the low 50s F (low 10s C) during the day, while at night they can dip into the high 30s F (single digits C). Humidity is generally between 60 and 70% 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

  • AirTag to track your luggage

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

  • Voice and data SIM card

    A SIM card that works in Islip. 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.

  • Money/passport pouch

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

Comfort + Essentials

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

    Airlines charge huge penalties for overweight luggage. Save money with this

  • Plug adapter

    A plug adapter that supports outlet types A and B. Be sure to pick the right kind. Many adapters available are simply plug changers and require your devices to convert the voltage themselves. If yours can't do that they could get fried. This one works in most areas.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel pillow

    Our favorite is this one

If you go to the Long Island Maritime Museum, wear museum-appropriate clothing and take:

December

December in Islip is pretty cool and somewhat rainy. The average overnight temperatures in the area are in the low 30s F (single digits below 0 C). It tends to rain about a third of the time. But the colder weather doesn't bring low humidity, which is in the 60% to 70% 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 Islip. A good global SIM card works in most countries, but check the country list before buying.

  • Anti-theft backpack

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

  • AirTag to track your luggage

    With airports repeatedly losing bags recently, an AirTag can help you find it anywhere in the world: 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

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Check that you pick the necessary kind. The vast majority of adapters on sale are just plug changers 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 areas.

  • Power bank for devices

    A portable power bank, like this one

  • Travel pillow

    What we like is this one

  • Luggage scale to avoid fees

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

If you go to the Long Island Maritime 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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