Boston weather in April 2026

Q: How warm is it in Boston in April?

Daytime temperatures usually reach 14°C in Boston in April, falling to 3°C at night.

Q: How sunny is it in Boston in April?

There are normally 7 hours of bright sunshine each day in Boston in April - that's 54% of daylight hours.

Q: Is the sea cold around Boston in April?

The average sea temperature around Boston in April is 5°C.

Q: Does it rain in Boston in April?

There are usually 11 days with some rain in Boston in April and the average monthly rainfall is 93mm.

Expect daytime maximum temperatures of 14°C in Boston, Massachusetts in April based on long-term weather averages. There are 7 hours of sunshine per day on average with 11 days with some rainfall and typically 93 mm of rainfall in the month.

14
14°C max day temperature
7
7 hours of sunshine per day
11
11 days with some rainfall
3
3°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
93
93 mm of monthly rainfall
5
5 (Moderate) UV index
5
5°C sea temperature

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The April weather guide for Massachusetts (Boston) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)