Boston · WinterMonth summary
Boston weather in December
⚠️ Fair
🌡️ Temperature min / max
-3°C – 5°C
🌧 Rainy days
34% of days
☀️ Sunshine
7.6h per day on average
🌊 🌊 Season
Winter
⭐ ⭐ Weather score
4.0/10
📅 📅 Best month
August (8.5/10)
Quick decision
Should you visit Boston in December?
⚠️ Fair
✅ 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 Boston. August (8.5/10) is much more favourable.
By trip type
Boston 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
🎯 Not recommended unless on tight budget — difficult weather (5°C, 34% rain) Winter in Boston is cool (5°C during the day). Days are short (7.6h of sunshine) but the city reveals a different side. Expect rain on 34% of days — a light raincoat in the bag is recommended.
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Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌨️ January | -5°C | 3°C | 32% | 3.2 | 8.0h | 4.1/10 |
| 🌨️ February | -4°C | 4°C | 35% | 3.1 | 8.7h | 4.1/10 |
| 🌦️ March | -1°C | 8°C | 35% | 3.6 | 9.9h | 4.6/10 |
| 🌦️ April | 4°C | 13°C | 40% | 3.6 | 10.1h | 5.5/10 |
| 🌤️ May | 9°C | 19°C | 38% | 3.0 | 12.0h | 7.3/10 |
| 🌤️ June | 15°C | 25°C | 38% | 2.6 | 13.0h | 8.1/10 |
| 🌤️ July | 19°C | 29°C | 39% | 3.7 | 13.2h | 8.2/10 |
| 🌤️ August | 18°C | 28°C | 34% | 2.5 | 12.5h | 8.5/10 |
| 🌤️ September | 15°C | 23°C | 31% | 3.6 | 10.8h | 7.7/10 |
| ⛅ October | 9°C | 17°C | 32% | 3.9 | 9.7h | 7.0/10 |
| 🌫️ November | 2°C | 10°C | 30% | 2.8 | 8.7h | 5.0/10 |
| 🌫️ December | -3°C | 5°C | 34% | 3.7 | 7.6h | 4.0/10 |
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, Boston averages 5°C, 34% rainy days and 7.6h of sunshine per day. Overall weather score: 4.0/10.
See methodology →
Comparison
December vs August (best month)
The best month is August (score 8.5/10). Difference:
- 🌡️ Max temperature : +23°C
- 🌧 Rainy days : +0%
- ☀️ Sunshine : +4.9h/day
FAQ
FAQ — Boston in December
Is December a good time to visit Boston?
December is not recommended for Boston (score 4.0/10). With 34% rainy days and 7.6h of sunshine, consider August (8.5/10) instead.
What's the weather like in Boston in December?
It's cool with 5°C daytime and -3°C at night. 7.6h of sunshine per day. Pack warm clothes and favour indoor visits.
Accommodation
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Activities & tours
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