Weather in Seattle in March
March in Seattle is cool outdoor weather: usable if you dress for it, not a beach brief.
In United States, this is how Seattle actually wears March, not how a country centroid would. Compared with August and December, March sits in the middle of Seattle's year.
Pack for Seattle in March, not for a brochure that was photographed in another season.
- Average temp
- 8°C
4–12°C
- Rainfall
- 106 mm
Showers likely
- Sunshine
- —
- Wind
- 14 km/h
What to expect
Daytime
Cool days in Seattle: a jumper you can take off, a shell in the bag. Walking is fine. Lingering outside without a layer is optimism.
Mornings and evenings are colder than the postcard. Pack for both, especially if you leave the built-up centre.
Rain
March is a wetter month in Seattle. Showers are part of the deal, not a spoiled surprise.
Waterproof shoes matter more than a rain plan for a beach, especially if a beach is not why you came. Build indoor hours into the afternoon.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
Rain jacket
A layer for cooler evenings
Where to stay in Seattle
Dates are a starting point for March.
Travel guides for Seattle
What to read before you book.
Average weather in Seattle
TemperatureRainfall
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FAQs about Seattle
Climate averages for Seattle, 1991–2020.
The best time to visit Seattle is between May and October, the most comfortable stretch of the year on these averages.
August is the hottest month, with an average around 19°C.
November is the wettest month, with about 160 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
