Boston weather in May (Massachusetts, United States of America)

What kind of temperatures can you expect in Boston during May? See what weather conditions to anticipate this month with our guide.

Temperatures

The month of May in Boston typically brings pleasant temperatures and high rainfall. During the day, temperatures can climb to about 20°C. At night, they may fall to a cooler 11°C.

Precipitation

Boston in May usually receives high rainfall, averaging around 100 mm for the month. On average, there are about 12 days with rain during this month.

Average sunshine

With approximately 301 hours hours of sun, the days are filled with brightness. It makes it a perfect month for outdoor activities.

In case you lean more towards enjoying temperate temperatures and rain-free days August and September typically offer the most optimal weather. In contrast, January, February, March and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Boston climate page with graphs.

 

Boston, monthly averages in May

Min Temperature 11°C  

Max Temperature 20°C  

Water Temperature 9°C  

Chance of Rain 41%  

Precipitation 100 mm  

Rainy days 12 days  

Humidity 67%  

Windspeed 22 km/h  

Sunshine 301 hours  

Percentage Sunshine 59%  

Where to go in the United States of America in May

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

Map not visible? Whoops sorry! Please refresh the page.

Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Boston, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes. With a water temperature of around 9°C there is no need to bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Boston.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.