USA
Washington, D.C. in August: weather & travel advice
This month's data profile
Rain shapes the decision
Washington, D.C. in August is climatically mixed. The average daily high is around 30 °C. With about 13 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
60/100 · #6
Warmth
#2
Dryness
#10
Sun
#4
Published best categories: Family
Washington, D.C. · AugustPhoto: Pom' · CC BY-SA 2.0Climate facts
- Average high
- 30 °C
- Average low
- 20 °C
- Rainy days (est.)
- 13 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 68 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| July | 31 | 21 | 15 | 111 | 7.5 | 68 | 2.0 | 53 |
| August (selected) | 30 | 20 | 13 | 103 | 6.7 | 68 | 2.0 | 60 |
| September | 26 | 16 | 11 | 110 | 5.4 | 71 | 2.4 | 77 |
How do the previous and next months compare?
Baseline: August (60/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| July | -7 | +0.7 °C | +0.8 °C | +2.1 | +8.8 mm | +0.8 h | -0.3 % | ±0 m/s |
| September | +17 | -3.7 °C | -3.8 °C | -2.1 | +7.5 mm | -1.3 h | +2.6 % | +0.4 m/s |
All twelve months in context
Find a place to stay
Where to stay in Washington, D.C.
Compare available stays, prices and cancellation terms for Washington, D.C. on Booking.com.
Booking.comFind places to stayAffiliate link: there is no extra cost to you.
Useful next decisions
Frequently asked questions
How warm is Washington, D.C. in August?
The average daily high is around 30 °C, with an average daily low of about 20 °C.
Does it rain a lot in Washington, D.C. in August?
The curated estimate is about 13 rainy days per month, not a directly measured long-term average. Total precipitation averages around 103 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Washington, D.C.?
By the climate score, April, May, September and October are the strongest months for Washington, D.C.. August is not among them.