Washington DC weather in August (United States of America)

What can you expect from the weather in Washington DC during August? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In August, Washington DC generally has very high temperatures and moderate rainfall. August is a summer month. Anticipate daytime temperatures around 31°C, while night temperatures can drop to 21°C.

Keep in mind that while these are the average temperatures, there can be days that are even hotter. It's essential to be prepared for such heat. Wearing light, breathable fabrics and protecting yourself from the sun's intensity with hats or shades can make a difference. Hydration is key, so remember to drink plenty of water, especially if you find yourself outdoors for extended periods.

Washington DC in August usually receives moderate rainfall, averaging around 76 mm for the month. When we look at the climate data from the last 30 years, we can expect around 10 days of rain.

The city usually sees around 262 hours of sunlight, indicating many sunny days.

If your ideal day consists of dry skies and moderate temperatures April and September generally stand out with the best circumstances. While January, February and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Washington DC climate page with graphs.

 

Washington DC, monthly averages in August

Min TemperatureMin Temperature 21°C  
Max TemperatureMax Temperature 31°C  
Chance of RainChance of Rain 34%  
PrecipitationPrecipitation 76 mm  
Rainy daysRainy days 10 days  
HumidityHumidity 69%  
WindspeedWindspeed 14 km/h  
SunshineSunshine 262 hours  
Percentage SunshinePercentage Sunshine 62%  

Where to go in the United States of America in August

Find out more about the weather in the United States of America in August and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Washington DC in August?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in August.

Swimming
9/10
Cycling
7/10
Walking
7/10
Camping
8/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Washington DC.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.