Boston weather in June
Temperature, sea and sunshine in June: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in June
Excellent
Best time to visit: May – September
What is the weather like in Boston in June?
In June, Boston is warm: daytime highs average 23 °C, and nights cool down to about 15 °C. The sea averages 15.0 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 88 mm in total. All in all, June is an excellent month for a holiday in Boston.
June compared
How the weather changes from May to July. Tap a month to open it.
More details for June
- Daylight
- 15 h 16 min05:06 – 20:22
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 5 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 62 %on averageAll months
- Hot days
- 2 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−4America/New_York
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %73 %
- Few rainy daysweight 30 %54 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in June
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Boston in June: quick answers
Is Boston hot in June?
Warm rather than hot: in June, daytime highs in Boston average 23 °C and nights cool to about 15 °C. On about 2 days the thermometer climbs to 30 °C or more.
Can you swim in Boston in June?
Only if you don't mind cold water: in June the sea averages just 15.0 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Boston in June?
Rain is frequent, with about 11 rainy days and 88 mm in total.
Boston month by month
The whole year in BostonAll destinations: USAWhere to go in JuneSea temperature in June
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