United States weather

Our guide to the weather in the United States during August

32

Average high

7

UV Index

155mm

Monthly rainfall

64%

Humidity

We've looked at the most up-to-date weather data for the United States, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about the United States weather in August.

How hot is it in the United States during August?

The temperature reaches around 32℃ during the daytime in August, falling away to 20℃ at night. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in the United States during August?

On average, there will be 7 rainy days during the month, amounting to 154.5mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a good chance that you'll catch a thunderstorm during your trip.

Is it windy in the United States during August?

You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during August. With moderate humidity, any breeze will have a welcome cooling effect.

Holidays in United States

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Books inspired by the United States

Our hand-picked selection of books to get you in the mood for your United States holiday

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New York In August Travel Guide – Things To Do, Events & Weather

5th September 2024 by I'm just a girl 16

Welcome to the ultimate guide for visiting New York City in August. From the weather forecast to the top events and activities, this comprehensive guide has got you covered for your summer escape to the Big Apple. Whether you're a first-time visitor or a seasoned traveller, there's something for everyone in this bustling city during the sunny month of August....

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In this post, readers will discover a carefully crafted seven-day itinerary for exploring the vibrant state of Louisiana. Starting in Baton Rouge and making stops in St. Francisville before concluding in the lively city of New Orleans, this journey offers a delightful mix of culture, history, and Southern charm. With two nights in each location, there’s ample opportunity to soak in the sights and experiences that make Louisiana truly unique. Join in on this road trip adventure and uncover the...

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22nd December 2025 by Two Monkey's Travel

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Weather in the United States

Our month-by-month guide to the weather and climate in the United States

5.1

United States weather in

January
6.3

United States weather in

February
13.8

United States weather in

March
18.4

United States weather in

April
23.3

United States weather in

May
30.3

United States weather in

June
32.7

United States weather in

July
31.9

United States weather in

August
28.0

United States weather in

September
20.1

United States weather in

October
12.9

United States weather in

November
6.8

United States weather in

December