Seattle in august: average Weather, Temperature and Climate
Weather in Seattle in august 2025
The weather in Seattle in the month of august comes from statistical datas on the last years. You can view the weather statistics the entire month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
perfect weather UV index: 6
Weather at 6am
63°F
Clear/Sunny
52% of time
24%
13%
6%
Weather at 12pm
79°F
Clear/Sunny
64% of time
23%
8%
6%
Weather at 6pm
68°F
Clear/Sunny
63% of time
22%
9%
4%
Weather at 3am
58°F
46%
24%
19%
11%
Evolution of daily average temperature and precipitation in Seattle in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Seattle in august.
The climate of Seattle in august is perfect
the weather in Seattle in august is dry ; it hardly ever rains (0.6in of rainfall over 1 days).
The climate nice around this city the month of august. The high seasonal norm is 81°F. On average, the recorded minimum temperature is 63°F. Thus, the mean temperature average in august in Seattle is 72°F. Note that these seasonal averages are in contrast with those observed in Seattle in august with a maximum record of 103°F in 2017 and a minimum record of 49°F in 2021. You can expect to have about 7 days with temperatures up to 86°F, or 23 of the month.
Day length in Seattle in august is 14:15. The sun rises at 05:06 and sunset is at 19:21.
With ideal weather conditions, this month is advisable to go in this locality in United States.
Seasonal average climate and temperature of Seattle in august
Check below seasonal norms These statistics are generated from the weather statements of the last years of the month of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 72°F | ||||
| Highest temperature | 81°F | ||||
| Lowest temperature | 63°F | ||||
| Highest record temperature | 103°F (2017) | ||||
| Lowest record temperature | 49°F (2021) | ||||
| Number of days at +86°F | 7 day(s) (23%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 54°F | ||||
| Lowest sea temperature | 52°F | ||||
| Highest sea temperature | 56°F | ||||
| Wind | |||||
| Wind speed | 9km/h | ||||
| Wind temperature | 63°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 0.6in | ||||
| Number of days with rainfall | 1 day(s) (3%) | ||||
| Record daily rainfall | 0.6in (2015) | ||||
| Other climate data | |||||
| Humidity | 79% | ||||
| Visibility | 9.39km | ||||
| Cloud cover | 24% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 14 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:06 | ||||
| Time of sunset | 19:21 | ||||
| Length of day | 14:15 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | perfect | ||||
How was the weather last august?
Here is the day by day recorded weather in Seattle in august 2024:
58°F to 85°F
63°F to 90°F
61°F to 88°F
61°F to 92°F
59°F to 86°F
56°F to 81°F
56°F to 83°F
59°F to 86°F
61°F to 88°F
59°F to 86°F
59°F to 76°F
52°F to 74°F
56°F to 72°F
56°F to 79°F
56°F to 79°F
59°F to 74°F
54°F to 77°F
59°F to 77°F
54°F to 77°F
58°F to 68°F
58°F to 70°F
56°F to 68°F
56°F to 61°F
52°F to 59°F
56°F to 72°F
52°F to 77°F
54°F to 63°F
49°F to 68°F
49°F to 76°F
54°F to 79°F
58°F to 83°F
Map: other cities in the United States (USA) in august
Cities near Seattle:
| Mount Rainier National Park (Washington) in august | good weather |
| Westport (Washington) in august | good weather |
| La Push (Washington) in august | good weather |
| Ocean Park (Washington) in august | good weather |
| Long Beach (Washington) in august | good weather |
| Portland in august | perfect weather |
| Salem (Oregon) in august | perfect weather |
| Lincoln City (Oregon) in august | perfect weather |
| Newport (Oregon) in august | perfect weather |
| Coos Bay in august | good weather |
| Crater Lake (Oregon) in august | good weather |
| Glacier National Park (Montana) in august | tolerable weather |
Click over cities on the map for information about the weather in august.
Seattle
perfect weather
good
tolerable
bad
very bad
Weather data for Seattle in august:
Weather data for Seattle for august are derived from an average of the weather forecast since 2009 in Seattle. There is a margin of error and these forecasts are to be considered as general information only. The weather in Seattle can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Seattle.