Massachusetts weather in May 2020

Below are average maximum temperatures at popular destinations in Massachusetts in May. Select a destination to see more weather parameters.

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The May weather guide for Massachusetts 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.

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

Guide to Massachusetts weather in May

The average maximum daytime temperature in Massachusetts in May is a comfortable 20°C (68°F). The average night-time temperature is usually a cool 9°C (48°F). There are usually 8 hours of bright sunshine each day, which represents 57% of the 15 hours of daylight.

Expect 85mm (3.3 inches) of rainfall across the whole of May with 11 days with some rain falling. Maximum UV levels will be high (7 UV index) at midday when the skies are clear.

The average sea temperature in and around Massachusetts in May is 9°C (48°F).

The weather in Massachusetts in May is represented by Boston.

Massachusetts sunrise & sunset times for May 2020

Browse the sunrise & sunset times for Massachusetts in May 2020. Select a month to view Massachusetts sunrise & sunset times for the next twelve months. The Massachusetts sunrise & sunset times shown below are for Boston.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2020 05:39 19:45
Saturday, 16th May 2020 05:21 20:01
Sunday, 31st May 2020 05:10 20:14
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