Seattle · WinterMonth summary
Seattle weather in December
❌ Poor
🌡️ Temperature min / max
37°F – 46°F
🌧 Rainy days
60% of days
☀️ Sunshine
3.5h per day on average
🌊 🌊 Season
Winter
⭐ ⭐ Weather score
1.4/10
📅 📅 Best month
July (9.2/10)
Quick decision
Should you visit Seattle in December?
❌ Poor
✅ Yes if: you enjoy winter atmosphere and the lowest prices of the year.
❌ No if: you're looking for sunshine or outdoor activities.
Our take: December is a difficult time for Seattle. July (9.2/10) is much more favourable.
By trip type
Seattle in December by trip type
- 🏙️ 🏙️ City break / culture : ⚠️ Possible
- 🚶 🚶 Outdoor activities : ❌ Not recommended
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in December
Winter in Seattle is cool (8°F during the day). Days are short (3.5h of sunshine) but the city reveals a different side. With 60% of rainy days, always have indoor alternatives planned.
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Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌦️ January | 37°F | 46°F | 58% | 0.2in | 4.3h | 1.7/10 |
| 🌦️ February | 36°F | 46°F | 55% | 0.2in | 5.5h | 2.5/10 |
| 🌦️ March | 39°F | 52°F | 52% | 0.1in | 8.4h | 4.2/10 |
| 🌦️ April | 43°F | 55°F | 47% | 0.1in | 10.4h | 5.3/10 |
| 🌤️ May | 48°F | 64°F | 35% | 0.1in | 11.9h | 7.2/10 |
| 🌤️ June | 54°F | 68°F | 28% | 0.1in | 13.0h | 7.7/10 |
| 🌤️ July | 57°F | 75°F | 11% | 0.0in | 14.5h | 9.2/10 |
| 🌤️ August | 59°F | 75°F | 16% | 0.0in | 12.9h | 8.7/10 |
| 🌤️ September | 55°F | 68°F | 31% | 0.1in | 10.3h | 7.4/10 |
| 🌦️ October | 48°F | 59°F | 45% | 0.2in | 7.5h | 5.0/10 |
| 🌦️ November | 43°F | 50°F | 59% | 0.2in | 4.7h | 2.3/10 |
| 🌦️ December | 37°F | 46°F | 60% | 0.2in | 3.5h | 1.4/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In December, Seattle averages 46°F, 60% rainy days and 3.5h of sunshine per day. Overall weather score: 1.4/10.
See methodology →
Comparison
December vs July (best month)
The best month is July (score 9.2/10). Difference:
- 🌡️ Max temperature : +16°F
- 🌧 Rainy days : -49%
- ☀️ Sunshine : +11.0h/day
FAQ
FAQ — Seattle in December
Is December a good time to visit Seattle?
December is not recommended for Seattle (score 1.4/10). With 60% rainy days and 3.5h of sunshine, consider July (9.2/10) instead.
Does it rain a lot in Seattle in December?
Yes, 60% of days see rain in December. Plan some indoor activities as backup.
Accommodation
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Activities & tours
Activities and tours in Seattle
Guided tours, skip-the-line tickets and local experiences.
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Flights
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