Typical May weather
Seattle
Washington · May
66° days
49° nights
about 6 rainy days · 15 hours of daylight
What to pack
- Light jacket
What May feels like
May is when Rainier starts showing up, and "the mountain is out" is a complete sentence here — people say it to strangers. Evenings stretch late enough for after-work hikes, and the ferry decks fill with people who just want to be on the water.
Expect about 6 days with real rain — enough to notice, not enough to plan around. The air runs dry — whatever the thermometer says, it wears easy.
The numbers
| Typical high | 66° |
|---|---|
| Typical low | 49° |
| Days with real rain | 6 |
| Total rain | 1.9 in |
| Humidity | dry air |
| Sunrise / sunset (mid-month) | 5:31 am / 8:40 pm |