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Best time to visit · Washington, United States
On the climate data, the best time to visit Seattle is June – September, scoring up to 90/100 with highs around 75°F (24°C) and 1.1 in (29 mm) of rain in August. May is a good shoulder-season month. The toughest months are December & January, mainly because of cool days.
These averages also cover Pike Place Market & Waterfront and Seattle Center & Queen Anne.
Highs run from 44°F to 75°F across the year, and the yearly total is about 48.4 in (1230 mm) of rain.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 46°F8°C | 47°F8°C | 51°F11°C | 57°F14°C | 64°F18°C | 68°F20°C | 74°F24°C | 75°F24°C | 69°F21°C | 59°F15°C | 50°F10°C | 44°F7°C |
| Avg low | 36°F2°C | 35°F2°C | 38°F3°C | 41°F5°C | 47°F9°C | 52°F11°C | 56°F14°C | 56°F14°C | 52°F11°C | 45°F7°C | 39°F4°C | 35°F2°C |
| Rain | 6.9 in174 mm | 4.3 in108 mm | 5.4 in138 mm | 3.7 in95 mm | 2.8 in70 mm | 2.0 in51 mm | 0.7 in19 mm | 1.1 in29 mm | 2.3 in58 mm | 4.9 in125 mm | 7.4 in188 mm | 6.9 in175 mm |
| Humidity | 90% | 87% | 85% | 82% | 80% | 80% | 77% | 76% | 78% | 84% | 89% | 90% |
| Cloud | 80% | 74% | 79% | 75% | 70% | 68% | 47% | 48% | 53% | 68% | 77% | 79% |
| Comfort | 36 | 48 | 50 | 66 | 83 | 86 | 89 | 90 | 90 | 69 | 43 | 34 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. The grid cell sits at about 110 m (361 ft), close to Seattle's own ~56 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The cold peaks here: highs of 44–47°F (7–8°C), and nights reach 35°F (2°C). It's the wettest season, with about 18.0 in (457 mm) of rain, 37% of the year's total. Comfort scores bottom out in December & January; the season averages 39/100.
Temperatures climb through the season, from 51°F highs in March to 64°F by May. About 11.9 in (303 mm) of rain falls across these months, 25% of the year's total. Lows bottom out around 38°F (3°C). May score well without being the very best (season average 66/100).
The warmest stretch of the year, with highs of 68–75°F (20–24°C). It's the driest season, with only about 3.9 in (99 mm) of rain, 8% of the year's total. Lows bottom out around 52°F (11°C). Comfort peaks here: June – August rank with the year's best, and the season averages 88/100.
Temperatures slide from 69°F highs in September to 50°F by November. About 14.6 in (371 mm) of rain falls across these months, 30% of the year's total. Lows bottom out around 39°F (4°C). September is among the best-scoring months (season average 67/100).
By comfort score: 5 Great, 2 Good, 2 Fair and 3 Tough. Great months: May – September. Tap a month for its own guide.
On the climate data, the best time to visit Seattle is June – September, scoring up to 90/100 with highs around 75°F (24°C) and 1.1 in (29 mm) of rain in August. May is a good shoulder-season month. The toughest months are December & January, mainly because of cool days.
November is the wettest month, averaging about 7.4 in (188 mm) of rain. July is the driest, with about 0.7 in (19 mm). The yearly total is around 48.4 in (1230 mm).
February is the coldest, with average lows of 35°F (2°C) and highs of 47°F (8°C). The warmest is August, with average highs of 75°F (24°C).
Not very: summer (June – August) humidity averages 78%, and highs peak around 75°F (24°C), so it rarely feels sticky.
Not on average: even in February, the coldest month, lows average 35°F (2°C). Individual cold snaps can still dip lower.
Poll the group on June – September dates, then plan the days, packing and costs together.
