Boston Weather in May

Average temperatures, rainfall and packing tips for Boston, United States in May

🌡️ Avg high

20°C

🌙 Avg low

11°C

🌧️ Rainfall

~133 mm

📊 Warmth rank

#5 of 12

May in Boston at a glance

May in Boston is typically mild, with average daytime highs around 20°C and nights near 11°C. Temperature-wise it sits mid-range for Boston (the 5th warmest month).

May is one of the wetter months in Boston, with around 133 mm of rain - plan around showers.

What to pack for Boston in May

Medium layers: long sleeves and a sweater
A light-to-medium jacket
A rain jacket or umbrella - this is one of the wetter months

Boston - year at a glance

HighLow · May highlighted

Is May a good time to visit Boston?

🧳 May is one of the most comfortable months to visit Boston - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.

Other months in Boston

May in other cities

← Boston weather tomorrow (live)

FAQ

How hot is Boston in May?

In May, Boston averages a daytime high of about 20°C and a night-time low of around 11°C, based on recent historical data.

Does it rain in Boston in May?

May is one of the wetter months in Boston, with around 133 mm of rain - plan around showers.

Is May a good time to visit Boston?

May is one of the most comfortable months to visit Boston - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.