Seattle Weather in August
United States · 30-year monthly averages
🌟 Great time to visit
August in Seattle is warm, with average daytime highs around 25°C (78°F) and nighttime lows near 14°C (57°F). Expect roughly 25mm of precipitation spread over about 3 rainy days, with little rainfall.
Avg high
25°C
78°F
Avg low
14°C
57°F
Rainfall
25mm
dry
Rainy days
3
days with ≥1mm
🎒 What to pack
- light summer clothing
- sunscreen and sunglasses
August vs the rest of the year
FAQ
- How hot is Seattle in August?
- August in Seattle is warm, with average daytime highs around 25°C (78°F) and nighttime lows near 14°C (57°F). Expect roughly 25mm of precipitation spread over about 3 rainy days, with little rainfall.
- Does it rain a lot in Seattle in August?
- Seattle sees around 25mm of precipitation in August on average — dry by global standards.
- Is August a good time to visit Seattle?
- August is one of the best months to visit Seattle — comfortable temperatures and manageable rainfall.