Great Diamond Island, Maine, United States of America: What to pack, what to wear, and when to go [2024]

Empty Lighthouse is a reader-supported site. This article may contain affiliate links to Amazon and other sites. We earn a commission on purchases made through these links.

Ready to pack for Great Diamond Island, Maine, United States of America? If you're planning to go to Great Diamond Island, we've got some important information about when to go, what to wear, and what to pack.

Contents

When to go to Great Diamond Island, Maine, United States of America

Based on the climate and weather in Great Diamond Island, Maine, United States of America, the best time to go is August. See below for details.

What to wear/what to pack for Great Diamond Island, Maine, United States of America

Already know when you're traveling?

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

What to wear/what to pack for Great Diamond Island, Maine, United States of America by month

January

Traveling to Great Diamond Island in January, you will notice that it is freezing. Expect it to rain or snow 5-10 days this month. Daytime temperatures are in the low 30s 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.

  • AirTag to track your luggage

    With airlines always losing luggage these days, 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 things.

  • Voice and data SIM card

    A SIM card that works in Great Diamond Island. 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 excessive prices for overweight luggage. Avoid penalties with this

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel pillow

    A versatile choice is this one

  • Travel adapter

    A plug adapter that supports outlet types A and B. Take care to find the correct kind. Many adapters currently available are simply plugs and expect your devices to adjust the voltage themselves. If yours can't do that they could burn up. This one should work in most areas.

  • Power bank for devices

    A portable power bank, like this one

February

Traveling to Great Diamond Island in February, you will notice that it is frigid. Expect it to rain or snow regularly. Daytime temperatures are in the 30s 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 Great Diamond Island. 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 airports constantly losing bags nowadays, an AirTag can help you locate it anywhere in the world: AirTag for iPhones.

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel neck support pillow

    Our favorite is this one

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Ensure that you choose the necessary type. Most adapters for sale now are simply plugs and expect your devices to adjust the voltage themselves. If your electronics can't do that they could burn up. This one should be appropriate for most countries.

  • Luggage scale to avoid fees

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

  • Power bank for devices

    A portable power bank, like this one

March

March in Great Diamond Island is pretty cool. The average overnight temperatures in the area are in the 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 things.

  • Voice and data SIM card

    A SIM card that works in Great Diamond Island. 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 things recently, an AirTag can help you find it anywhere in the world: AirTag for iPhones.

Comfort + Essentials
  • Travel adapter

    A plug adapter that supports outlet types A and B. Check that you find the necessary type. Most adapters on sale are just plugs and expect your devices to convert the voltage themselves. If your devices can't do that they could burn up. This one should be appropriate for most places.

  • Travel pillow

    An excellent option 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

  • Luggage scale to avoid fees

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

April

If you go to Great Diamond Island in April, you will notice that it is brisk. Expect it to rain a bit less than half of the time. Daytime temperatures are in the low 50s F (low 10s 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 anywhere: 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 Great Diamond Island. 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 things.

Comfort + Essentials
  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. It's important that you get the necessary type. A lot of adapters available online are simply plug changers and expect your electronics to adjust the voltage themselves. If yours can't do that they could burn up. This one works in most areas.

  • Luggage scale to avoid fees

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

  • Travel neck 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

May

If you go to Great Diamond Island in May, you will notice that it is cool. Expect it to rain 5-10 days this month. Daytime temperatures are in the 60s F (high 10s C).

What to wear/what to pack:

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

    A SIM card that works in Great Diamond Island. 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.

  • AirTag to track your luggage

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

  • Money/passport pouch

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

Comfort + Essentials
  • Luggage scale to avoid fees

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

  • Power bank for devices

    A portable power bank, like this one

  • Travel neck pillow

    An excellent option 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. Take care to find the necessary kind. The majority of adapters available online are simply plugs 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 places.

June

June in Great Diamond Island is warm. The rain can amount to several inches/centimeters. During this time, temperatures average in the 60s F (high 10s C) to 70s F (low 20s C).

What to wear/what to pack:

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

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

  • 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 belongings.

  • Voice and data SIM card

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

Comfort + Essentials
  • Travel neck pillow

    An excellent option is this one

  • Luggage scale to avoid fees

    Airlines charge large prices for overweight luggage. Avoid surcharges 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

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. It's important that you get the correct kind. The majority of adapters currently sold are simply plug changers and expect your electronics to change the voltage themselves. If yours can't do that they could get fried. This one works in most countries.

July

July is a perfect temperature. Temperatures average in the low 70s F (high 20s C) during the day. It rains 5-10 days this month.

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.

  • Money/passport pouch

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

  • AirTag to track your luggage

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

  • Voice and data SIM card

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

Comfort + Essentials
  • Plug adapter

    A plug adapter that supports outlet types A and B. Take care to find the right kind. The majority of adapters for sale now are just plug changers and require your devices to change the voltage themselves. If your electronics can't do that they could get destroyed. This one is sufficent for most areas.

  • 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

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel neck pillow

    What we like is this one

August

August in Great Diamond Island is warm. The rain can amount to several inches/centimeters. During this time, temperatures average in the high 70s F (mid 20s C).

What to wear/what to pack:

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

    With airports frequently losing bags these days, an AirTag can help you locate it anywhere in the world: 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 Great Diamond Island. 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 stuff.

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel neck pillow

    A good option is this one

  • 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 find the right kind. The majority of adapters available online are just plugs and require your electronics to adjust the voltage themselves. If yours can't do that they could burn up. This one should work in most locations.

  • Luggage scale to avoid fees

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

September

September for Great Diamond Island is mild. Temperatures average in the low 60s 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
  • Money/passport pouch

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

  • AirTag to track your luggage

    With airports constantly losing bags 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 things.

  • Voice and data SIM card

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

Comfort + Essentials
  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Be careful to pick the right kind. A lot of adapters currently being sold are just plugs and require your electronics to adjust the voltage themselves. If yours can't do that they could get destroyed. This one should work in most locations.

  • Travel neck support pillow

    A good option is this one

  • 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

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

October

If you visit Great Diamond Island during October, you are likely to notice that it is crisp. Temperatures tend to hover around the low 60s F (mid 10s C) during the day, while at night they can dip into the 40s F (single digits C). 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
  • Voice and data SIM card

    A SIM card that works in Great Diamond Island. 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.

  • AirTag to track your luggage

    With airlines frequently losing luggage recently, 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
  • Power bank for devices

    A portable power bank, like this one

  • Plug adapter

    A plug adapter that supports outlet types A and B. Make sure to find the right type. Most adapters available are simply plugs and require your devices to change the voltage themselves. If your electronics can't do that they could get fried. This one should work in most areas.

  • 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 excessive penalties for overweight luggage. Avoid surcharges with this

November

If you are traveling to Great Diamond Island in November, you will notice that it is pretty cool. Expect it to rain or snow about a third of the time. Daytime temperatures are in the high 40s F (single digits C).

What to wear/what to pack:

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

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

  • 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 Great Diamond Island. 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. Avoid penalties with this

  • 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 right kind. The majority of adapters currently being sold are simply plugs and require your electronics to change the voltage themselves. If yours can't do that they could burn up. This one is sufficent for most places.

  • Power bank for devices

    A portable power bank, like this one

  • Travel neck pillow

    A top rated pillow is this one

December

December in Great Diamond Island can be extremely cold. The average overnight temperatures in the area are in the low 20s F (single digits below 0 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 belongings.

  • Voice and data SIM card

    A SIM card that works in Great Diamond Island. 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 constantly losing things nowadays, an AirTag can help you locate it anywhere in the world: AirTag for iPhones.

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

  • Luggage scale to avoid fees

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

  • Travel adapter

    A plug adapter that supports outlet types A and B. Be careful to pick the right type. A lot of adapters available online are just plug changers and require your electronics to change the voltage themselves. If your electronics can't do that they could get fried. This one is sufficent for most countries.

  • Travel neck pillow

    What we like is this one

What to do in Great Diamond Island, Maine, United States of America

Great Diamond Island is a small island situated in Casco Bay, Maine, United States of America. The island is known for its breathtaking beauty, abundant bird life, and unique history. Visiting the island is a perfect way to get away from the hustle and bustle of everyday life and reconnect with nature's serene beauty.

Below are some of the top tourist attractions you must visit while exploring Great Diamond Island:

1. The Diamond Cove General Store: The Diamond Cove General Store is one of the island's most popular tourist spots. It offers a warm and welcoming atmosphere that embodies the essence of the island. The store sells everything from fresh produce to local souvenirs.

2. Diamond Cove Beach: Diamond Cove Beach is a fantastic place to relax and soak up the sun while gazing at the crystal clear blue waters of Casco Bay. The beach is accessible by a short walk from the ferry dock, and it is an excellent place to spend a day with your family or loved ones.

3. Fort McKinley: Fort McKinley is a historic site with a fascinating history. The fort was built during the end of the 19th century to protect Casco Bay from potential invasions. Today, it is converted into a resort, making it an excellent place to spend your vacation.

4. Longfellow's Garden: Longfellow's Garden is a botanical garden named after the famous poet Henry Wadsworth Longfellow. The garden has a rich variety of flora and fauna that will leave you breathless. It is an ideal place to spend a quiet afternoon, enjoying the beauty of nature.

5. The Island Cruises: The Island Cruises offers tourists an opportunity to explore the surrounding islands of Casco Bay by boat. The tour is a perfect way to experience the beauty of the bay while enjoying the cool breeze.

In conclusion, Great Diamond Island is a must-visit destination in Maine. The island has something to offer for everyone, from its rich history to its stunning natural beauty. The above-discussed tourist attractions are just a few reasons why you should explore this unique and charming island. Plan your visit today and experience the magic of Great Diamond Island.

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: Ratlam, India, Belfast, Northern Ireland, United Kingdom, Pattimattom, India, São José do Rio Preto, São Paulo, Brazil, Okehampton, England, United Kingdom, Falmouth, Antigua and Barbuda, Algonquin Provincial Park, Ontario, Canada, Kashid, India, Essex, Vermont, United States of America, Lac-Saint-Jean, Quebec, Canada, and Alfred, Maine, United States of America.