Seattle, Washington Weather in December
United States · December climate averages and travel tips
Avg high7°C (44°F)
Avg low2°C (35°F)
Rainfall184 mm (7.2 in)
RatingPoor 0.6/10
Seattle in December sees daytime temperatures around 7°C (44°F), dropping to about 2°C (35°F) at night. December is winter in United States. The month is wet, with about 184 mm (7.2 in) of rain spread over 19 days, making it the second wettest month of the year. You get roughly 8.2 hours of daylight and frequently cloudy skies.
Is December a good time to visit Seattle?
December is not the best time to visit Seattle (0.6/10) mainly because of the cold. The weather is much better in June to September.
December weather at a glance
| Average high | 7°C (44°F) |
|---|---|
| Average low | 2°C (35°F) |
| Daily mean | 4°C (39°F) |
| Rainfall | 184 mm (7.2 in) |
| Rainy days (1 mm+) | 19 |
| Humidity | 91% |
| Cloud cover | 79% |
| Daylight | 8.2 hours |
| Est. sunshine | 1.9 hours/day |
| Wind | 3.1 km/h |
| vs November | 3°C cooler than November, with 12 mm less rain. |
What to pack for Seattle in December
- a heavy winter coat, gloves and a hat
- an umbrella or rain jacket
Seattle weather in other months
Jan7°C / 2°C178 mmPoorFeb8°C / 2°C117 mmPoorMar11°C / 3°C133 mmPoorApr13°C / 5°C98 mmPoorMay18°C / 8°C73 mmGoodJun20°C / 11°C57 mmExcellentJul23°C / 13°C19 mmExcellentAug24°C / 13°C25 mmExcellentSep21°C / 11°C62 mmExcellentOct15°C / 8°C125 mmFairNov10°C / 4°C196 mmPoorDec7°C / 2°C184 mmPoor
← NovemberBest time to visit SeattleJanuary →
Better weather in December nearby
- Mexico City22°C · 7 mm · Excellent
- Orlando, Florida23°C · 51 mm · Excellent
- Cabo San Lucas26°C · 12 mm · Excellent
- Iztapalapa22°C · 13 mm · Excellent
- Puebla23°C · 12 mm · Excellent
- Ecatepec de Morelos22°C · 13 mm · Excellent
Nearby in December
- Victoria7°C · 142 mm
- Vancouver6°C · 180 mm
- Calgary-2°C · 24 mm
- Edmonton-6°C · 20 mm
- San Francisco, California14°C · 123 mm
- Las Vegas, Nevada15°C · 17 mm
Where else is good in December? See where to go in December.