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The best time to visit Seattle

Month-by-month climate averages for Seattle, WA, so you can pick your dates on data rather than guesswork.

Short answer

The most comfortable time to visit Seattle is usually May, June, July and August, when daytime highs sit in the pleasant 60-78°F range and the heaviest December rain is behind you.

Seattle is warmest in July (highs near 78°F) and coldest in February (lows around 36°F), with roughly 43 inches of precipitation across the year and December the wettest month. The sweet spot for most visitors is May, June, July and August.

These are long-run averages. For the actual days you are travelling, check the live Seattle forecast — and note how much the models agree, because that tells you how much to trust it.

Seattle weather by month

what to expect in Seattle through the year

Here is Seattle's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Seattle by season.

Jan
46°
37°
Cool
Feb
47°
36°
Cool
Mar
51°
38°
Cool
Apr
55°
42°
Cool
May
65°
49°
Mild
Jun
69°
53°
Mild
Jul
78°
58°
Warm
Aug
77°
59°
Warm
Sep
69°
55°
Mild
Oct
60°
48°
Mild
Nov
50°
42°
Cool
Dec
49°
40°
Cool
Wettest

Common questions

When is the best time to visit Seattle?
The most comfortable time to visit Seattle is usually May, June, July and August, when daytime highs sit in the pleasant 60-78°F range and the heaviest December rain is behind you.
What is the warmest month in Seattle?
July is the warmest month in Seattle, averaging highs near 78°F.
What is the coldest month in Seattle?
February is the coldest month in Seattle, with lows around 36°F.
When is the rainy season in Seattle?
The wettest month in Seattle is usually December, out of roughly 43 inches of precipitation across the year.

Seattle month by month

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember