World Resorts USA Boston Weather

Boston weather in May

Weather in Boston: May

Average day temperature: 64.5°F
Average night temperature: 53.2°F
Sea water temperature: 52.0°F
Number of sunny days: 12 days
Day length: 14.1 - 15.1 hours
Number of rainy days: 4 days
Precipitation totals: 2.5 in.

Air temperature in May, °F

Show year:
2024
2023
2022

The highest day temperature during May of 2024 was 84°F. At the same time the lowest night temperature was 43°F. Day and night temperature averages during May were 64.5°F and 53.4°F.

Sea water temperature in Boston in May, °F

Show year:
2024
2023
2022

The average sea water temperature in May of 2024 was 53.9°F. The highest and lowest sea temperatures during the month were 60.3°F and 47.5°F.

Sunny, partly cloudy and cloudy days

Number of sunny, partly cloudy and cloudy days in May is almost equal.

Precipitation total in May, in.

Precipitation total value in Boston in May is 2.8 in. Other months of the year show relatively similar values.

Wind speed in May, mph

The average wind speed value in May is 8.4 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 8.6.

Best time for vacation in Boston

Sunniest months:
August 16 days
July 15 days
September 13 days
Warmest months:
July 81.9 °F
August 80.5 °F
June 74.2 °F
Warmest sea temp:
August 67.6 °F
July 66.7 °F
September 64.3 °F
Coldest months:
January 33.4 °F
February 34.9 °F
December 39.5 °F
Rainiest months:
April 5 days
June 5 days
December 4 days
Windiest months:
January 10.9 mph
March 10.8 mph
February 10.6 mph

Boston on a weather map

Boston
+46°F
W 11 mph
Feels like: +39°F
Precip.: 0%
Places in USA:
Name
°F
+46°F
+43°F
+73°F
+73°F
+41°F
+55°F
+73°F
+66°F
+48°F
+50°F
+55°F
+64°F
+61°F
+54°F
+32°F
24 Hours Forecast
Boston
Local time: 10:07
November 21, thursday
1200
46°F
W
14 mph
1500
48°F
SW
14 mph
1800
48°F
W
16 mph
2100
48°F
W
14 mph
November 22, friday
0000
50°F
W
16 mph
0300
46°F
N
9 mph
0600
45°F
NE
7 mph
0900
46°F
N
4 mph
Units of measurement: °C / °F