United States · 47.61°N 122.33°W · 30-year monthly averages, judged against the Warm preset (highs 19–28 °C66–82 °F, dry or showers)
The best time to visit Seattle is June to September, with highs of 21–24 °C70–75 °F and nights of 11–13 °C52–55 °F, and rainfall of under 60 mm2.4 in a month.
The rainy season is November to March; November to January is a true monsoon, with 136–160 mm5.4–6.3 in a month and a peak in December (160 mm6.3 in). August is the hottest month (highs of 24 °C75 °F) and December the coldest (8 °C46 °F).
The figures are 30-year monthly averages (WorldClim 2.1 monthly normals 1970–2000) for the 0.25° grid cell at 47.61, -122.33. This is a climate guide, not a forecast.
Pick the weather you like. Every month is then judged against it: temperature above the month names, rain below.
Good time to go for a Warm holiday: June to September.
Open Seattle on the interactive map ↗ the same verdicts for any place on Earth, in any month
Reading the chart. Gold means good: the month fits what you picked. Any other colour shows the reason it does not. The temperature bar can be too cold or too hot; the rain bar can be too dry, too rainy or monsoon. A faded gold bar means that half fits but the other half does not. A gold month name means both halves fit.
What the verdicts mean. Temperature is the month's average daily high (the afternoon), judged against the preset's band (highs 19–28 °C66–82 °F for Warm). Rain is judged by each month's class within Seattle's own year, not by raw millimetres: dry under 60 mm2.4 in, showers 60–100 mm2.4–3.9 in, rainy from 100 mm3.9 in and at least 35 % of the wettest month. Too rainy is a rainy-season month that the preset does not allow. Monsoon is the heaviest kind of rainy season: 180 mm7.1 in or more (120 mm4.7 in near the yearly peak) in a climate where the wettest month has at least three times the rain of the driest. Every monsoon month is also a rainy-season month; the label says which kind. Full rules on the method page.
| Month | Rain | High | Low | Season | Warm verdict |
|---|---|---|---|---|---|
| January | 1365.4 | 846 | 236 | monsoon | too cold |
| February | 1044.1 | 1050 | 337 | rainy | too cold |
| March | 1044.1 | 1253 | 438 | rainy | too cold |
| April | 722.8 | 1457 | 541 | showers | too cold |
| May | 481.9 | 1864 | 846 | dry | too cold |
| June | 401.6 | 2169 | 1151 | dry | good |
| July | 240.9 | 2373 | 1254 | dry | good |
| August | 321.3 | 2474 | 1355 | dry | good |
| September | 481.9 | 2169 | 1151 | dry | good |
| October | 803.1 | 1660 | 745 | showers | too cold |
| November | 1445.7 | 1050 | 439 | monsoon | too cold |
| December | 1606.3 | 846 | 236 | monsoon | too cold |
| Looking for | Rule | Months that fit |
|---|---|---|
| Warm | highs 19–28 °C66–82 °F, dry or showers | June to September |
| Tropical | highs 28–38 °C82–100 °F, any rain except monsoon | |
| Beach | highs 28–38 °C82–100 °F, dry or showers | |
| Cool | highs 3–19 °C37–66 °F, any rain except monsoon | February to May and October |
| Snow | highs below 3 °C37 °F, any rain |
Yes. The rainy season is November to March; November to January is a true monsoon, with 136–160 mm5.4–6.3 in a month and a peak in December (160 mm6.3 in). Outside the rainy season, May to September is dry.
August is the hottest month (highs of 24 °C75 °F) and December the coldest (8 °C46 °F). Annual rainfall is about 992 mm39 in.
The nearest destinations that fit the Warm preset in the months when Seattle does not:
The interactive map colours the whole world by how well it fits the weather you like, in any month, and shows this chart for any place you tap.