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Massachusetts weather in August 2025
Expect 27°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Massachusetts in August. Check more long-term weather averages for Massachusetts in August before you book your next holiday to Massachusetts in 2025/2026.
- 27°C max day temperature
27 - 9 hours of sunshine per day
- 10 days with some rainfall
10 - 16°C min night temperature
16 - 14 hours of daylight per day
14 - Low heat & humidity
L - 85 mm of monthly rainfall
85 - 8 (Very High) UV index
8 - 18°C sea temperature
18
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Recommended for Massachusetts
The August 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.
Top Massachusetts destinations
Below are average maximum temperatures at popular countries, regions and places in Massachusetts in August. Select a holiday destination to see more weather parameters.
All Massachusetts destinations
- Boston
- Chatham
- Martha's Vineyard
- Nantucket
- New Bedford
- Newburyport
- Pittsfield
- Provincetown
- Salem
- Springfield
- Worcester
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Massachusetts in August?
Daytime temperatures usually reach 27°C in Boston, Massachusetts in August with low heat and humidity, falling to 16°C at night.
How sunny is it in Massachusetts in August?
There are normally 9 hours of bright sunshine each day in Boston, Massachusetts in August - that's 63% of daylight hours.
How warm is the sea around Massachusetts in August?
The average sea temperature around Boston, Massachusetts in August is 18°C.
Does it rain in Massachusetts in August?
There are usually 10 days with some rain in Boston, Massachusetts in August and the average monthly rainfall is 85mm.
What is the chance of a hurricane in Massachusetts in August?
On average less than 1 day in August in Boston, Massachusetts is likely to be affected by the passage of one or more tropical storms.
Massachusetts August sunrise & sunset times
Browse the sunrise and sunset times for Massachusetts in August 2025. Select a month to view Massachusetts sunrise and sunset times for the next 12 months. The Massachusetts sunrise and sunset times shown below are for Boston.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 04:37 | 19:03 |
| Saturday, 16th August 2025 | 04:53 | 18:43 |
| Sunday, 31st August 2025 | 05:09 | 18:19 |
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