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Boston in April: weather, sea & travel advice
This month's data profile
Clear transition month
Boston in April is climatically mixed. The average daily high is around 13 °C, and the sea is about 6 °C. With about 11 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
40/100 · #7
Warmth
#7
Dryness
#6
Sun
#5
Sea warmth
#9
Published best categories: none
Boston · AprilPhoto: Chris Wood ( User:chris_j_wood ) · CC BY-SA 4.0Climate facts
- Average high
- 13 °C
- Average low
- 2 °C
- Sea
- 6 °C
- Rainy days (est.)
- 11 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 79 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| March | 6 | -3 | 11 | 114 | 4.6 | 83 | 1.0 | 4 | 30 |
| April (selected) | 13 | 2 | 11 | 104 | 5.8 | 79 | 0.6 | 6 | 40 |
| May | 19 | 8 | 12 | 93 | 6.7 | 79 | 0.4 | 10 | 54 |
How do the previous and next months compare?
Baseline: April (40/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| March | -10 | -6.5 °C | -5.2 °C | +0.2 | +9.4 mm | -1.2 h | +3.7 % | +0.4 m/s | -2.3 °C |
| May | +14 | +6.1 °C | +5.9 °C | +1 | -11.2 mm | +0.9 h | -0.7 % | -0.2 m/s | +4.3 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Boston in April?
The average daily high is around 13 °C, with an average daily low of about 2 °C.
Can you swim in Boston in April?
The sea is about 6 °C (cold).
Does it rain a lot in Boston in April?
The curated estimate is about 11 rainy days per month, not a directly measured long-term average. Total precipitation averages around 104 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Boston?
By the climate score, June, July, August and September are the strongest months for Boston. For a beach trip: July, August and September. April is not among them.