Boston · SpringMonth summary
Boston weather in May
✅ Good
🌡️ Temperature min / max
48°F – 66°F
🌧 Rainy days
38% of days
☀️ Sunshine
12.0h per day on average
🌊 🌊 Season
Spring
⭐ ⭐ Weather score
7.3/10
📅 📅 Best month
August (8.5/10)
Quick decision
Should you visit Boston in May?
✅ Good
✅ Yes if: you want to explore the city on foot without suffering from heat.
❌ No if: you're looking for a beach destination — water and air are still cool.
Our take: Boston in May: 66°F and 12.0h of sunshine. Decent, but not the peak.
By trip type
Boston in May by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in May
Spring marks the start of the good season in Boston. Temperatures rise (19°F) and tourists have not yet arrived en masse. Expect rain on 38% of days — a light raincoat in the bag is recommended. Not the best window, but acceptable if dates are constrained. August (8.5/10) is significantly better if possible.
Browse by month
All months for Boston
Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌨️ January | 23°F | 37°F | 32% | 0.1in | 8.0h | 4.1/10 |
| 🌨️ February | 25°F | 39°F | 35% | 0.1in | 8.7h | 4.1/10 |
| 🌦️ March | 30°F | 46°F | 35% | 0.1in | 9.9h | 4.6/10 |
| 🌦️ April | 39°F | 55°F | 40% | 0.1in | 10.1h | 5.5/10 |
| 🌤️ May | 48°F | 66°F | 38% | 0.1in | 12.0h | 7.3/10 |
| 🌤️ June | 59°F | 77°F | 38% | 0.1in | 13.0h | 8.1/10 |
| 🌤️ July | 66°F | 84°F | 39% | 0.1in | 13.2h | 8.2/10 |
| 🌤️ August | 64°F | 82°F | 34% | 0.1in | 12.5h | 8.5/10 |
| 🌤️ September | 59°F | 73°F | 31% | 0.1in | 10.8h | 7.7/10 |
| ⛅ October | 48°F | 63°F | 32% | 0.2in | 9.7h | 7.0/10 |
| 🌫️ November | 36°F | 50°F | 30% | 0.1in | 8.7h | 5.0/10 |
| 🌫️ December | 27°F | 41°F | 34% | 0.1in | 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 May, Boston averages 66°F, 38% rainy days and 12.0h of sunshine per day. Overall weather score: 7.3/10.
See methodology →
Comparison
May vs August (best month)
The best month is August (score 8.5/10). Difference:
- 🌡️ Max temperature : +9°F
- 🌧 Rainy days : -4%
- ☀️ Sunshine : +0.5h/day
FAQ
FAQ — Boston in May
Is May a good time to visit Boston?
May is an acceptable time for Boston (score 7.3/10). Conditions are decent but not optimal — consider August (8.5/10) if possible.
What to do in Boston in May?
With 66°F max and 12.0h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in Boston
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