Month-by-month travel weather
Washington, DC August weather
Washington, DC, United States · August
Heat and storms can make comfort fluctuate
August remains hot and humid, though later in the month some evenings can feel slightly easier.
Storms can briefly change the air, but humidity can return quickly.
August averages at a glance
Average low
around 21–23°C
Average high
around 30–33°C
Average precipitation
around 75–110 mm
Rainy days
about 7–11 days
What to wear in August in Washington, DC
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Breathable clothing + optional rain option.
- • Optional thin indoor layer for A/C.
- • Light layer can help if evenings cool down.
Travel tips for visiting Washington, DC in August
- • Walk more in morning/evening windows on hotter days.
- • Rain can slow transit—keep buffer time.
August weather in Washington, DC — FAQ
Q. Is August cooler than July?
A. Sometimes slightly, but hot days can still be common.
Q. Are nights cool?
A. Some nights feel easier, but humid warm nights also happen.
Explore Washington, DC
These pages are connected so you can compare conditions and decide for yourself.