Typical August weather
Seattle
Washington · August
78° days
57° nights
about 2 rainy days · 14½ hours of daylight
What to pack
- Light jacket
- Sunscreen
What August feels like
Seafair takes over the first weekend with hydroplanes on Lake Washington and Blue Angels overhead, and the bridge closures are planned around days in advance. The one honest caveat is smoke: some Augusts, wildfire haze drifts in from the east and flattens the mountains out of the view for a week.
Real rain shows up about 2 days all month; the rest stay dry. Humidity stays comfortable; the air never feels heavy.
The numbers
| Typical high | 78° |
|---|---|
| Typical low | 57° |
| Days with real rain | 2 |
| Total rain | 1.0 in |
| Humidity | comfortable |
| Sunrise / sunset (mid-month) | 6:05 am / 8:21 pm |