Best Time to Visit Boston
United States · 30-year monthly climate averages
☀️ When to go
Based on 30 years of climate data, the most comfortable months to visit Boston are May, June and September, when daytime temperatures are agreeable and rainfall is relatively low.
Climate profile
Boston sees its warmest weather in July, when daytime highs average around 28°C, and its coolest in January (around 3°C).
Annual precipitation totals roughly 1107mm — December is typically the wettest month (~109mm) and February the driest (~82mm).
Rainfall is spread fairly evenly through the year, so no single season is dramatically wetter than the rest.
Year at a glance
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
🔥 Recent heat vs normal
Daily forecast highs vs the 30-year normal — last 37 days
Each bar is one day: orange above normal, blue below.
Month by month
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 3° / -5°C | 86mm | 🤔 Fair |
| February | 4° / -4°C | 82mm | 🤔 Fair |
| March | 8° / 0°C | 106mm | ⚠️ Challenging |
| April | 14° / 5°C | 92mm | 🤔 Fair |
| May | 19° / 10°C | 83mm | 👍 Good |
| June | 25° / 15°C | 99mm | 🌟 Great |
| July | 28° / 19°C | 83mm | 👍 Good |
| August | 27° / 18°C | 82mm | 👍 Good |
| September | 23° / 15°C | 90mm | 🌟 Great |
| October | 17° / 9°C | 102mm | 👍 Good |
| November | 11° / 3°C | 93mm | 🤔 Fair |
| December | 6° / -1°C | 109mm | ⚠️ Challenging |
FAQ
- What is the best time to visit Boston?
- Based on 30 years of climate data, the most comfortable months to visit Boston are May, June and September, when daytime temperatures are agreeable and rainfall is relatively low.
- What is the hottest month in Boston?
- July is typically the hottest month in Boston, with average daytime highs around 28°C.
- What is the rainiest month in Boston?
- December is usually the wettest month, with around 109mm of precipitation.