Seattle in March
In March, Seattle averages 11°C (52°F) during the day and 4°C (39°F) at night, with frequent rain — about 20 days of the month see precipitation (123 mm total).
ShoulderConditions are cool — bring a jacket for evenings. Expect daily rain or showers, often in heavy bursts.
March is one of the wetter and less comfortable months in Seattle. If your dates are flexible, consider a different time of year.
How March compares to the rest of the year in Seattle
March is in the middle of the year for warmth in Seattle (8th of 12) and moderately rainy compared to the rest of the year (4th of 12). Daytime temperature runs 4°C below the annual average (15°C). March runs 3°C warmer than February (8°C) and warms a further 3°C into April (14°C).
March sunrise & sunset in Seattle
Times shown for Seattle local time (America/Los_Angeles), calculated for the 15th of March. They shift by a few minutes day to day across the month.
Photography light in Seattle — March
Golden-hour and blue-hour windows for the 15th of March, in Seattle's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Seattle in March
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on March's tier (Shoulder) and Seattle's popularity.
Crowds & pricing — March in Seattle
Seattle is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — March in Seattle
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Seattle in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 8°C / 47°F | 3°C / 37°F | 182 mm | 21 | — |
| February | 8°C / 46°F | 2°C / 36°F | 125 mm | 21 | — |
| March | 11°C / 52°F | 4°C / 39°F | 123 mm | 20 | — |
| April | 14°C / 57°F | 6°C / 42°F | 93 mm | 19 | — |
| May | 18°C / 65°F | 10°C / 49°F | 56 mm | 16 | — |
| June | 21°C / 70°F | 12°C / 54°F | 50 mm | 14 | — |
| July | 25°C / 76°F | 15°C / 58°F | 16 mm | 8 | — |
| August | 25°C / 76°F | 15°C / 59°F | 27 mm | 10 | — |
| September | 20°C / 69°F | 12°C / 54°F | 65 mm | 15 | — |
| October | 15°C / 59°F | 9°C / 48°F | 138 mm | 18 | — |
| November | 10°C / 50°F | 5°C / 41°F | 178 mm | 21 | — |
| December | 7°C / 45°F | 3°C / 37°F | 185 mm | 20 | — |
Other cities with similar March weather
🌍 See the full ranked list of climate twins for Seattle in March →
Frequently asked questions
How hot is Seattle in March?
In March, Seattle averages a high of 11°C (52°F) and a low of 4°C (39°F) — generally cool.
Does it rain a lot in Seattle in March?
March is quite rainy in Seattle, with about 20 rainy days on average.
Is March a good time to visit Seattle?
March is cool but on the rainy side. It suits travelers who are comfortable with cool weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Seattle in March?
Pack a warm jacket and layers, plus a compact umbrella or rain jacket. See the full March packing list for Seattle for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.