City in Washington, United States
Seattle weather by month and the best time to visit
When to go to Seattle
Jun–Sep is dry and bright with long days and is busiest. Oct–May is cool and cloudy with frequent drizzle; Jul–Aug can be smoky.
Seattle weather by month
Average daily high, rainfall and conditions.
- Jan7°174 mm
- Feb8°108 mm
- Mar11°138 mm
- Apr14°95 mm
- May18°70 mm
- Jun20°51 mm
- Jul24°19 mm
- Aug24°29 mm
- Sep21°58 mm
- Oct15°125 mm
- Nov10°188 mm
- Dec7°175 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 7°C45°F | 2°C36°F | 174 mm | 90% | Rainy |
| February | 8°C47°F | 2°C35°F | 108 mm | 87% | Cold |
| March | 11°C51°F | 3°C38°F | 138 mm | 85% | Cold |
| April | 14°C57°F | 5°C41°F | 95 mm | 82% | Cool |
| May | 18°C64°F | 8°C47°F | 70 mm | 80% | Cool |
| June | 20°C68°F | 11°C52°F | 51 mm | 80% | Pleasant |
| July | 24°C74°F | 14°C56°F | 19 mm | 77% | Pleasant |
| August | 24°C75°F | 14°C56°F | 29 mm | 76% | Pleasant |
| September | 21°C69°F | 11°C52°F | 58 mm | 78% | Pleasant |
| October | 15°C59°F | 7°C45°F | 125 mm | 84% | Cool |
| November | 10°C50°F | 4°C39°F | 188 mm | 89% | Rainy |
| December | 7°C44°F | 2°C35°F | 175 mm | 90% | Rainy |
Best months across United States
| Place | Best months | Warmest month |
|---|---|---|
| New York City | Apr–Jun, Sep–Oct | Jul (26°C) |
| Las Vegas | Mar–May, Oct–Nov | Jul (42°C) |
| Los Angeles | Mar–May, Sep–Nov | Aug (32°C) |
| Orlando | Feb–Apr, Nov | May (31°C) |
| Miami | Nov–Apr | Aug (30°C) |
| San Francisco | Apr–May, Sep–Oct | Sep (24°C) |
| Honolulu | Apr–Jun, Sep–Oct | Sep (28°C) |
| Washington, D.C. | Mar–May, Sep–Oct | Jul (31°C) |
| Chicago | May–Jun, Sep–Oct | Jul (25°C) |
| Boston | May–Jun, Sep–Oct | Jul (28°C) |
| New Orleans | Feb–Apr, Oct–Nov | Jul (30°C) |
| San Diego | Apr–May, Sep–Nov | Aug (32°C) |
| Seattle | Jun–Sep | Aug (24°C) |
| Maui | Apr–May, Sep–Oct | Sep (22°C) |
| Nashville | Apr–May, Sep–Oct | Aug (32°C) |
| Austin | Mar–May, Oct–Nov | Aug (36°C) |
| Miami Beach | Nov–Apr | Aug (30°C) |
| Key West | Dec–Apr | Aug (30°C) |
| Denver | May–Jun, Sep–Oct | Jul (33°C) |
| Philadelphia | Apr–May, Sep–Oct | Jul (30°C) |
| Portland | Jun–Sep | Aug (29°C) |
| Atlanta | Mar–May, Oct–Nov | Jul (32°C) |
| San Antonio | Mar–May, Oct–Nov | Aug (36°C) |
| Charleston | Mar–May, Oct–Nov | Jul (32°C) |
| Savannah | Mar–May, Oct–Nov | Jul (33°C) |
| Fort Lauderdale | Dec–Apr | Aug (30°C) |
| Kauai | Apr–Jun, Sep–Oct | Sep (27°C) |
| Big Island | Apr–Jun, Sep–Oct | Aug (26°C) |
| Sedona | Mar–May, Sep–Nov | Jul (35°C) |
| Scottsdale | Feb–Apr, Oct–Nov | Jul (42°C) |
Quick answers
What is the best month to visit Seattle?
Jun–Sep. Jun–Sep is dry and bright with long days and is busiest. Oct–May is cool and cloudy with frequent drizzle; Jul–Aug can be smoky.
When is the rainy season in Seattle?
Rain peaks in November with about 188 mm. Months with 150 mm or more: Nov–Jan.
What is the hottest month in Seattle?
August, with average highs of 24°C (75°F).
How cold does Seattle get?
The coolest nights are in February, averaging 2°C (35°F).
More about Seattle
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Sources
- NASA POWER climatology (2001–2020)
- Sound Transit (Link light rail)
- King County Metro
- Seattle–Tacoma International Airport
- Washington State Ferries
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.