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Seattle weather in May

Long-run climate averages for Seattle, WA in May, plus what the forecast models say for the days ahead.

May at a glance

In May, Seattle averages 65°F by day and 49°F at night. The wettest month is usually December.

May in Seattle averages a daytime high of 65°F and an overnight low of 49°F, which reads as mild for this part of the world. Across the whole year Seattle sees roughly 43 inches of precipitation.

Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Seattle forecast with every model compared and how much they currently agree.

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

How warm is Seattle in May?
Seattle averages a daytime high of 65°F in May, with overnight lows around 49°F. These are long-run climate averages, not a forecast — for the actual days ahead see the live model comparison.
Is May a good 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.
Does it rain a lot in Seattle in May?
The wettest month in Seattle is usually December. Across the year the city sees roughly 43 inches of precipitation.

Seattle in other months

JanuaryFebruaryMarchAprilJuneJulyAugustSeptemberOctoberNovemberDecember

More about Seattle

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