San Diego County, California, United States of America: What to pack, what to wear, and when to go [2024]

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Ready to pack for San Diego County, California, United States of America? If you're planning to go to San Diego County, I've got some important information about when to go, what to wear, and what to pack.

Contents

When to go to San Diego County, California, United States of America

Based on the climate and weather in San Diego County, California, United States of America, the best time to go is September. See below for details.

What to wear/what to pack for San Diego County, California, United States of America

Already know when you're traveling?

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

What to wear/what to pack for San Diego County, California, United States of America by month

January

If you vacation in San Diego County during January, you are likely to find that it is pretty cool. Temperatures tend to hover around the 50s F (low 10s C) during the day, while at night they can dip into the 30s F (single digits C). In terms of precipitation, you can expect it to rain or snow/sleet regularly.

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 stuff.

  • AirTag to track your luggage

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

  • Voice and data SIM card

    A SIM card that works in San Diego County. 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

  • 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 adapter

    A plug adapter that supports outlet types A and B. Take care to get the necessary type. The majority of adapters currently sold are just plug changers and require your devices to convert the voltage themselves. If your electronics can't do that they could get destroyed. This one should be sufficient for most areas.

  • Travel pillow

    A good option is this one

February

February in this region can be chilly. Temperatures average in the high 50s F (mid 10s 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.

  • AirTag to track your luggage

    With airports repeatedly losing bags nowadays, an AirTag can find it anywhere on earth: AirTag for iPhones.

  • Anti-theft backpack

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

  • Voice and data SIM card

    A SIM card that works in San Diego County. 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 penalties for overweight luggage. Avoid penalties with this

  • Travel pillow

    An excellent option 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. The majority of adapters for sale now are simply plugs and expect your electronics to adjust the voltage themselves. If yours can't do that they could burn up. This one works in most countries.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

March

Traveling to San Diego County in March, you will notice that it is chilly. Expect it to rain about a third of the time. 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 San Diego County. 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 stuff.

  • AirTag to track your luggage

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

Comfort + Essentials

  • Plug adapter

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

  • Travel neck pillow

    A versatile choice is this one

  • 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

April

April in San Diego County is mild. The average overnight temperatures in the area are in the 40s F (single digits C), with a few days below 32 F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • AirTag to track your luggage

    With airlines constantly losing things these days, an AirTag can find it anywhere on earth: 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 San Diego County. 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 adapter

    A plug adapter that supports outlet types A and B. Take care to get the correct kind. Most adapters on sale are just plug changers and expect your devices to change the voltage themselves. If yours can't do that they could get fried. This one should work in most places.

  • Luggage scale to avoid fees

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

  • Travel neck support pillow

    A good option is this one

  • Power bank for devices

    A portable power bank, like this one

May

May in San Diego County is pretty consistently hot and dry with little rain. Temperatures average in the low 80s F (high 20s C) during the day. It rains occasionally.

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.

  • Voice and data SIM card

    A SIM card that works in San Diego County. 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 airlines frequently losing bags recently, an AirTag can help you locate it anywhere in the world: AirTag for iPhones.

Comfort + Essentials

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Take care to choose the correct kind. The majority of adapters on sale are simply plugs and expect 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

    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 excessive penalties for overweight luggage. Avoid penalties with this

June

If you are traveling to San Diego County in June, you will notice that it is really hot and dry with little rain. Daytime temperatures are in the low 90s F (low 30s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • AirTag to track your luggage

    With airports always losing luggage recently, an AirTag can help you locate it anywhere in the world: AirTag for iPhones.

  • Voice and data SIM card

    A SIM card that works in San Diego County. 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 stuff.

  • 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. Be sure to find the necessary kind. A lot of adapters available are simply plugs and require your devices to convert the voltage themselves. If yours can't do that they could get destroyed. This one works in most places.

  • Travel neck pillow

    What we like is this one

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

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

July

If you are traveling to San Diego County in July, you will notice that it is scorchingly hot and very dry with almost no rain. Daytime temperatures are in the high 90s F (high 30s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • AirTag to track your luggage

    With airlines frequently losing things nowadays, an AirTag can help you locate it anywhere in the world: AirTag for iPhones.

  • 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 San Diego County. 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

  • Luggage scale to avoid fees

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

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Take care to choose the correct type. Most adapters currently being sold are just plugs and expect your electronics to convert the voltage themselves. If yours can't do that they could get fried. This one should be sufficient for most countries.

August

If you are traveling to San Diego County in August, you will notice that it is sizzling and very dry with almost no rain. Daytime temperatures are in the 90s F (mid 30s 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 protection, an anti-theft backpack protects your belongings.

  • AirTag to track your luggage

    With airports always losing bags 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 San Diego County. A good global SIM card works in most countries, but check the country list before buying.

Comfort + Essentials

  • Travel pillow

    What we like is this one

  • Luggage scale to avoid fees

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

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Ensure that you pick the necessary type. The majority of adapters available online are just plugs and require your electronics to adjust the voltage themselves. If your devices 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

  • Power bank for devices

    A portable power bank, like this one

September

September in this region is really hot and dry with little rain. Temperatures average in the high 80s F (low 30s C) during the day.

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.

  • AirTag to track your luggage

    With airports constantly 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.

  • Voice and data SIM card

    A SIM card that works in San Diego County. 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

  • Travel neck support pillow

    A top rated pillow is this one

  • Luggage scale to avoid fees

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

  • Travel adapter

    A plug adapter that supports outlet types A and B. Check that you choose the necessary kind. A lot of adapters currently available are simply plugs and require your electronics to convert the voltage themselves. If your devices can't do that they could get destroyed. This one should work in most countries.

  • Power bank for devices

    A portable power bank, like this one

October

If you vacation in San Diego County during October, you might see that it is a perfect temperature and dry with little rain. Temperatures tend to hover around the 70s F (mid 20s C) during the day, while at night they can dip into the low 50s F (low 10s 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 things.

  • Voice and data SIM card

    A SIM card that works in San Diego County. 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 nowadays, 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

  • 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

    A good option is this one

  • Travel adapter

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

  • Luggage scale to avoid fees

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

November

If you are traveling to San Diego County in November, you will notice that it is cool. Expect it to rain sometimes. Daytime temperatures are in the low 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 San Diego County. 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 stuff.

  • 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 find it anywhere anywhere: 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

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Be careful to choose the necessary type. Many adapters available 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 works in most areas.

  • Luggage scale to avoid fees

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

  • Travel neck pillow

    A versatile choice is this one

December

December here can be very chilly. Temperatures average in the 50s F (low 10s C) during the day. It rains or snows once in a while.

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 San Diego County. A good global SIM card works in most countries, but check the country list before buying.

  • AirTag to track your luggage

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

  • Anti-theft backpack

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

Comfort + Essentials

  • 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

  • Plug adapter

    A plug adapter that supports outlet types A and B. Make sure to find the correct type. The majority of adapters available online are just plugs and expect your devices to adjust the voltage themselves. If yours can't do that they could get destroyed. This one should be appropriate for most countries.

  • Travel neck pillow

    A great choice is this one

  • Power bank for devices

    A portable power bank, like this one

What to do in San Diego County, California, United States of America

San Diego County, California is an ideal tourist destination for people of all ages with its scenic beauty, history, beaches and museums. There are plenty of places to visit and activities to indulge in. Here are the top tourist attractions in San Diego County:

1. Balboa Park: Balboa Park is a 1200-acre park that is located in the heart of San Diego. It is one of the largest urban parks in the world and has numerous gardens, museums, and theaters. The San Diego Zoo is also located inside the park, which makes it one of the most popular tourist attractions in San Diego.

2. San Diego Zoo: San Diego Zoo is one of the most famous zoos in the world. It is home to over 3,700 animals from more than 650 species. The zoo is known for its conservation efforts and is a must-visit place for animal lovers.

3. USS Midway Museum: The USS Midway Museum is located in Downtown San Diego and is a maritime museum. It is a popular attraction and is one of the most visited naval ships in the world.

4. SeaWorld San Diego: SeaWorld San Diego is an iconic theme park that is known for its thrilling rides, marine shows, and marine life experience. It is a fun place for children and adults alike.

5. La Jolla Cove: La Jolla Cove is a picturesque beach that is located in the affluent La Jolla neighborhood of San Diego. It is an ideal place for swimming, snorkeling and kayaking.

6. Old Town San Diego: Old Town San Diego is a historic district that is home to numerous museums, restaurants, and shops. It is a great place to learn about the history of San Diego.

7. Torrey Pines State Natural Reserve: Torrey Pines State Natural Reserve is a nature reserve that is located on a coastal bluff. It has several miles of hiking trails that offer stunning views of the Pacific Ocean.

8. Cabrillo National Monument: Cabrillo National Monument is a national park that is located on the Point Loma peninsula of San Diego. It commemorates the landing of Juan Rodriguez Cabrillo, the first European to set foot on the West Coast of the United States.

9. Coronado Beach: Coronado Beach is a beautiful beach that is located on the Coronado Island, which is connected to San Diego by a bridge. It is known for its golden sand and turquoise water.

10. Birch Aquarium at Scripps: Birch Aquarium at Scripps is located in La Jolla and is a public aquarium. It is home to over 5,000 fish and invertebrates, and has numerous exhibits that are educational and fun.

In conclusion, San Diego County has something for everyone. From picturesque beaches to historic sites and marine life experiences, there are plenty of things to see and do. So, pack your bags and head to San Diego County for an unforgettable vacation.

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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