Weather in Seattle in December
Seattle offers cool weather with frequent rainfall (avg 4.9°C, 19 rainy days). Weather score: 1/10 · Poor
Avg temp
4.9°C
Daytime high
7.3°C
Night low
2.8°C
Rainy days
19
Sun per day
3.6 h
Seattle climate table – all 12 months
| Month | Avg temp | High | Low | Rainy days | Sun/day | Score |
|---|---|---|---|---|---|---|
| January | 5.2°C | 8.1°C | 2.6°C | 17 | 4.3 h | 3.4/10 |
| February | 4.9°C | 8°C | 2.2°C | 15 | 5.3 h | 3.4/10 |
| March | 7°C | 10.9°C | 3.6°C | 15 | 7.3 h | 4.1/10 |
| April | 9.5°C | 13.7°C | 5.7°C | 14 | 9.3 h | 6/10 |
| May | 13.5°C | 18°C | 9.5°C | 10 | 10.3 h | 7.6/10 |
| June | 16.3°C | 21°C | 12.2°C | 8 | 11.7 h | 9.3/10 |
| July | 19.2°C | 24.5°C | 14.6°C | 4 | 12.7 h | 9.2/10 |
| August | 19.6°C | 24.9°C | 15.1°C | 5 | 11.7 h | 9.2/10 |
| September | 16.1°C | 20.6°C | 12.5°C | 10 | 9.3 h | 8.8/10 |
| October | 11.8°C | 15.3°C | 9°C | 14 | 6.5 h | 5.3/10 |
| November | 7.4°C | 10.2°C | 5°C | 17 | 4.9 h | 3.4/10 |
| December | 4.9°C | 7.3°C | 2.8°C | 19 | 3.6 h | 1/10 |
Top alternatives in December
Chile
Santiago · ⭐ 10
Thailand
Bangkok · ⭐ 10
Thailand
Thailand · ⭐ 10
Cambodia
Siem Reap · ⭐ 10
Australia
Perth · ⭐ 10
Cambodia
Siem Reap · ⭐ 10
Frequently asked questions about Seattle in December
How warm is it in Seattle in December?
In December, Seattle averages 4.9°C, with daytime highs of 7.3°C and night lows of 2.8°C.
Does it rain a lot in Seattle in December?
December sees around 19 rainy days and about 185.9 mm of rainfall in Seattle.
Is December a good month to visit Seattle?
December scores 1/10 for Seattle. Seattle offers cool weather with frequent rainfall (avg 4.9°C, 19 rainy days).