Temperatures in August
It's warm in August in Washington with an average temperature of 28°C. Temperatures this month range from a low of 26°C to a high of 29°C. At night, you can expect temperatures between 16°C and 19°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Washington in August. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of August
The month of August starts in Washington with hot temperatures, averaging around 28°C during the day and nights close to 18°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-August
By mid-August, the average daytime temperature stays the same at 28°C, with nights close to 18°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
Temperatures vary between day and night, so it’s smart to wear layers.
End of August
By the end of August, the average daytime temperature in Washington will be around 27°C, with nights close to 17°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers.
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Precipitation in August
In August, there is an average of 113 mm of precipitation, spread over 10 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
The average precipitation chance is 34% per day this month. Though it seems pretty low, the weather’s variable. There are also a few days with higher precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in August for Washington. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Washington in August |
London | ||
|---|---|---|---|
 Average Temperature |
28°C | 22°C | |
 High Temp |
29°C | 24°C | |
| Low Temp |
26°C | 19°C | |
 Total Precipitation |
113 mm | 60 mm | |
| Rainy Days |
10 days | 10 days | |
July
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is August a good time to visit Washington?
After some sun? Then August isn’t the best time to be in Washington. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Washington in August
With 33°C, Washington hit the highest temperature in the last 10 years in August 2016. The lowest daytime temperature in this month was 19°C in 2015. The extreme night temperatures ranged from a low of 6°C to a high of 23°C.
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Daily Temperature in August in Washington
This chart shows the average daily temperatures, both day and night, for each day in August in Washington, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in August in Washington
The chart below shows the average daily precipitation in August for Washington, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for August, you can expect around 10 days of rain in Washington.
Daily UV Index in August in Washington
This chart shows the average daily UV index in August in Washington, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Washington Over the Years
This chart shows the average temperature in August in Washington, measured in degrees Celsius, over the past years.
Total Precipitation in August in Washington Over the Years
This chart shows the average precipitation in August in Washington, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in August for Washington
Click on a specific day in August for detailed info on the typical weather on that day in Washington. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Washington
Have you been to Washington in August?
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Average Weather in Washington by Month
Click on a month below to see detailed weather info for Washington. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Washington for all months at once
