Planning a trip to Washington in August? You are in luck! The weather is generally good, with an average maximum temperature of +86°F and approximately 4 sunny days. Just be prepared for some rain, as there are usually around 9 rainy days and 111 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+86°F
Avg. max. temperature
+48°F
Min.
+102°F
Max.
111 mm
Total precipitation
68%
Avg. humidity
2 m/s
Avg. wind
4 ☀️
Sunny Days
18 ⛅️
Cloudy
9 🌦
Rainy
Our opinion: Washington has good weather in August.
Average temperature in Washington in August
Here are the expected maximum, average and minimum temperatures in Washington for August based on the historical data.
Last Year
Historical Data
The temperature in August is +88°F on average, with a range between a maximum of +97°F during the day and a minimum of +63°F at night.
The average maximum temperature goes down 11% by the end of the month, compared with the beginning of the month, from +88°F to +84°F.
Is Washington warm or cold in August?
Washington is typically warm in August.
Maximum temperatures go down compared to the previous month from +88°F to +86°F. The minimum temperature also goes down from +72°F to +70°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is one of the warmest months in Washington, here is the comparison with other months:
Climate in Washington in August
Washington weather looks like this, on average, in August and the surrounding months.
July
August
September
Avg. temperature
+88°F
+86°F
+79°F
Min. temperature
+54°F
+48°F
+43°F
Max. temperature
+104°F
+102°F
+99°F
Rainfall
133 mm
111 mm
115 mm
Wind
2 m/s
2 m/s
2 m/s
Humidity
66%
68%
69%
Air pressure
1014 HPa
1015 HPa
1016 HPa
Sunny days
3
4
6
Cloudy days
18
18
16
Rainy days
10
9
8
Snowy days
0
0
0
August weather is still as good as in July.It’s getting colder in August. From +88°F in the day, the average maximum temperature lowers to +86°F.As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 133 mm to 111 mm.Humidity rises from 66% to 68%.The average wind speed doesn’t change much during August, staying around 2 m/s.The good news is there are likely to be more sunny days in August, from 3 to 4.
September brings much the same weather, it remains good.
Wind speed in Washington in August based on historical data.
Last Year
Historical Data
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Washington is gradually increasing during August, going from 2 m/s to 3 m/s over the course of the month.
Rain
Amount of rainfall in mm during August in Washington based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in August stands at 55%, leading to total precipitation of around 198 mm. The maximum amount of rainfall per day is around 42 mm, which is moderate rain.August is a pretty wet month with over 17 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how August is compared with other months in the amount of precipitation, total mm:
Washington wettest month is July, where a typical day has a 32% chance of precipitation and 133 mm of rainfall per day. January, on the other hand, is the driest month with a mere 16% chance of precipitation and 59 mm of rainfall per day.
How was the weather last August in Washington?
This is the weather in Washington in August 2023:
1 August
🌧️
+88°F
2 August
☁️
+91°F
3 August
☀️
+93°F
4 August
☀️
+98°F
5 August
🌧️
+93°F
6 August
☁️
+89°F
7 August
☁️
+92°F
8 August
☀️
+92°F
9 August
☀️
+96°F
10 August
☁️
+92°F
11 August
🌧️
+87°F
12 August
☁️
+83°F
13 August
☀️
+83°F
14 August
☁️
+84°F
15 August
🌧️
+75°F
16 August
☁️
+82°F
17 August
☁️
+84°F
18 August
☀️
+86°F
19 August
☀️
+88°F
20 August
☁️
+89°F
21 August
☁️
+82°F
22 August
🌧️
+86°F
23 August
☀️
+87°F
24 August
☀️
+89°F
25 August
☁️
+90°F
26 August
☁️
+91°F
27 August
☁️
+89°F
28 August
☁️
+91°F
29 August
☁️
+91°F
30 August
☁️
+93°F
31 August
☁️
+85°F
In August 2023 Washington had 9 sunny days, 17 cloudy days, and 5 rainy days. The average maximum temperature was +88°F, with an absolute maximum of +97°F and a minimum of +75°F. The average humidity was 72%, with a maximum of 95% and a minimum of 32%. The average wind speed was 3 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in August?
Climate Change Over the Years
This is how Washington climate has changed over the last 43 years.
The climate in Washington in August has not changed that much over the last 43 years.
The average temperature was the lowest in 2000 (+83°F) and the highest in 1980 (+92°F). The driest year was 1995 with only 30 mm of rainfall, and the wettest year was 2021 with 489 mm.
FAQ
Frequently asked questions about the weather in Washington in August:
Is August a good time to visit Washington?
August is a really good time to go to Washington. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Washington.
Can you sunbathe in Washington in August?
August is warm in Washington. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Is Washington rainy in August?
Washington is often rainy in August. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Washington in August?
Usually, it’s not very sunny in Washington in August, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Washington, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.