Seattle weather in August
August in Seattle averages 77°F by day and 57°F at night, with 1.0 inches of precipitation. It is the 1st-warmest and 11th-wettest month of the year here.
- Average high
- 77°F+1° vs July
- Average low
- 57°F0 nights below freezing
- Precipitation
- 1.0 in3 days with 0.1 in. or more
- Snow
- 0.0 in1 days at 90°F+
Is August a good time to visit Seattle?
Yes. August is one of the most comfortable months in Seattle by our rule (highs of 62 to 86°F, lows of 42°F or more and under 4.5 inches of precipitation). The most comfortable months overall are May to September.
Get outside in Seattle in August
August is made for being outside. Try Space Needle, Pike Place Market, Seattle Center, Woodland Park Zoo. All things to do in Seattle.
On August 15 the sun rises at 6:05 am and sets at 8:20 pm, giving 14h 15m of daylight. Daylight all year.
What to pack for Seattle in August
- Summer clothes, with a light layer for air conditioning
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
August nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Seattle | 77°F | 57°F | 1.0 in | |
| Bellevue, WA | 8 mi | 77°F | 57°F | 1.0 in |
| Kirkland, WA | 8 mi | 77°F | 57°F | 1.0 in |
| Redmond, WA | 11 mi | 77°F | 57°F | 1.0 in |
| Renton, WA | 12 mi | 78°F | 57°F | 1.0 in |
| Kent, WA | 17 mi | 78°F | 57°F | 1.0 in |
| Federal Way, WA | 20 mi | 78°F | 57°F | 1.0 in |
Frequently asked questions
What is the weather like in Seattle in August?
In August, Seattle averages a high of 77°F and a low of 57°F, with 1.0 inches of precipitation (NOAA 1991-2020 normals).
Is August a good time to visit Seattle?
Yes. August is one of Seattle's most comfortable months by our rule: highs between 62°F and 86°F, lows of 42°F or more and modest rain.
Does it snow in Seattle in August?
Rarely. The August snowfall normal is under half an inch.
Before and after: Seattle in July and Seattle in September. All twelve months: Seattle weather by month.
NOAA NCEI 1991-2020 climate normals, station Seattle Sand Pt WSFO, WA, 6.6 miles from the city center.