Measured, not vibes
Best Time to Visit Boston
By measured weather comfort, the top months for Boston are September, May, June — and RouteVerdict's editorial pick, which also weighs crowds and prices, is May, June, September, October. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Boston (14 m elevation).
Month by month
Boston weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 3.9°C / 39°F | 8.7 | 9 | |
| February | 5.1°C / 41°F | 8.2 | 12 | |
| March | 9.5°C / 49°F | 9.5 | 26 | |
| April | 13.3°C / 56°F | 8.7 | 46 | |
| May | 20.2°C / 68°F | 8.3 | 80 | Best |
| June | 25.9°C / 79°F | 8.7 | 78 | Best |
| July | 28.8°C / 84°F | 11 | 63 | Shoulder |
| August | 27.7°C / 82°F | 10.2 | 70 | Shoulder |
| September | 23°C / 73°F | 8.3 | 83 | Best |
| October | 17.8°C / 64°F | 6.8 | 73 | |
| November | 11.7°C / 53°F | 5.7 | 40 | |
| December | 6.5°C / 44°F | 9.3 | 15 |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
FAQ
Boston timing questions
What is the best month to visit Boston?
By measured weather comfort (ERA5 2020–2024), the top months are September, May, and June, with September scoring highest. RouteVerdict's editorial pick is May, June, September, and October, which also weighs crowds, prices, and events.
What is the hottest month in Boston?
July, with an average daily high of 28.8°C (84°F).
What is the rainiest month in Boston?
July, averaging 11 days with at least 1 mm of precipitation.
When is shoulder season in Boston?
August and July — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.