Boston, United Kingdom Climate by Month
Boston, England, United Kingdom
Mild summers and cool winters, with rain spread through the year.
Mild summers and cool winters, with rain spread through the year: that's Boston's climate in short. Expect highs of 72°F (22°C) in July and 45°F (7°C) in January, with the coldest nights (January) near 35°F (2°C). It gets 25 in (626 mm) of rain a year, spread across the months. The air is humid, averaging 80% relative humidity.
- Warmest month
- 72°F(22°C)
- Average high, July
- Coldest nights
- 35°F(2°C)
- Average low, January
- Rain per year
- 25 in(626 mm)
- No clear rainy season
- Humidity
- 80%
- Sunniest: June
Best and worst months in Boston
Best for weatherJuly and August are the best time for weather in Boston: highs near 72°F (22°C) and about 2.5 in (64 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 46°F (8°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Boston weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 45°F(7°C) | 35°F(2°C) | 2.0 in(50 mm) | 83% | 0.7 |
| FebFebruary | 47°F(8°C) | 35°F(2°C) | 1.5 in(38 mm) | 80% | 1.3 |
| MarMarch | 51°F(11°C) | 38°F(3°C) | 1.6 in(40 mm) | 80% | 2.5 |
| AprApril | 56°F(14°C) | 41°F(5°C) | 1.6 in(40 mm) | 77% | 3.7 |
| MayMay | 62°F(17°C) | 46°F(8°C) | 2.0 in(50 mm) | 70% | 4.6 |
| JunJune | 68°F(20°C) | 51°F(11°C) | 2.2 in(57 mm) | 75% | 4.8 |
| JulJulyBest | 72°F(22°C) | 55°F(13°C) | 2.3 in(59 mm) | 75% | 4.8 |
| AugAugustBest | 72°F(22°C) | 54°F(12°C) | 2.7 in(68 mm) | 77% | 4.0 |
| SepSeptember | 66°F(19°C) | 51°F(10°C) | 2.1 in(53 mm) | 78% | 2.9 |
| OctOctober | 58°F(15°C) | 46°F(8°C) | 2.4 in(60 mm) | 84% | 1.6 |
| NovNovember | 51°F(10°C) | 40°F(4°C) | 2.3 in(59 mm) | 88% | 0.8 |
| DecDecember | 46°F(8°C) | 36°F(2°C) | 2.0 in(52 mm) | 92% | 0.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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