Boston weather in April
Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in April
Fair
Best time to visit: May – September
What is the weather like in Boston in April?
In April, Boston is cool: daytime highs average 13 °C, and nights cool down to about 4 °C. The sea averages 6.1 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 103 mm in total. All in all, April is a so-so month for a holiday in Boston.
April compared
How the weather changes from March to May. Tap a month to open it.
More details for April
- Daylight
- 13 h 19 min06:05 – 19:24
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 61 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC−4America/New_York
How the score comes together
- Temperatureweight 50 %47 %
- Sunshineweight 20 %57 %
- Few rainy daysweight 30 %48 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in April
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Boston in April: quick answers
Is Boston hot in April?
No. In April, Boston is cool: daytime highs average 13 °C and nights drop to about 4 °C.
Can you swim in Boston in April?
Only if you don't mind cold water: in April the sea averages just 6.1 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Boston in April?
Rain is frequent, with about 11 rainy days and 103 mm in total.
Boston month by month
The whole year in BostonAll destinations: USAWhere to go in AprilSea temperature in April
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences