March · United States
Best time to visit Seattle in March Weather, crowds & prices
Weather in Seattle in March
Average temperature 7°C, 100 mm of rain, about 6 days with 6+ hours of sunshine and 86% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
March score
5.0/10
Ranked #8 of 12 months
- Avg temp
- 7°C
- Rainfall
- 100 mm
- Humidity
- 86%
- Days with 6h+ sun
- 6
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
March in Seattle scores 5.0/10 for sightseeing and cultural travel - ranked #8 of 12. Expect around 7°C, 100 mm of rain, and roughly 6 days with 6+ hours of sunshine this month.
Ferry views, coffee culture, and evergreen trails peak in clearer May-September weather.
March in Seattle — workable with trade-offs
March averages 7°C (44°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
At 100 mm this is a genuinely wet month: about 6 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 5/10 here, 8th of 12 months, against 9.6/10 in the destination's best month.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
Figure on mid-season pricing, with crowds are moderate.
Flexible dates? July scores 4.6 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Seattle in March?
- In March, Seattle averages 7°C, 100 mm of rain, and about 6 days with 6+ hours of sunshine. Its climate-comfort score is 5.0/10.
- Is March a good time to visit Seattle?
- March earns a 5.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Seattle in March?
- Expect about 100 mm of rain in March. Average humidity is 86% and there are about 6 days with 6+ hours of sunshine.
Curated in Seattle
Tickets & experiences
Things to do in Seattle
Seattle, United States. Live activities and tours from GetYourGuide, matched to this destination.