World Resorts USA Boston Weather

Boston Sea Temperature in May

Average sea water temperature in May:
+52.0°F
Minimum sea water temperature in May: 63.1°F
Maximum sea water temperature in May: 43.7°F

Daily sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 53.0°F. The highest and lowest sea temperatures during the month were 56.8°F and 48.4°F.

Monthly sea water temperature in Boston, °F

Which USA resorts have warmest sea in May?

Place name May 2025 May 2024
Everglades 84.5°F 84.6°F
Key West 83.5°F 84.6°F
Naples 83.5°F 83.8°F
Marco Island 83.5°F 84.0°F
Key Largo 83.5°F 84.1°F
Cape Coral 83.4°F 83.6°F
Tampa 82.7°F 82.5°F
Sarasota 82.7°F 82.9°F
St. Petersburg 82.6°F 82.4°F
Clearwater Beach 82.6°F 82.5°F
Miami 82.6°F 83.3°F
Siesta Key 82.5°F 82.6°F
Miami Beach 82.4°F 83.0°F
Fort Lauderdale 81.1°F 81.7°F
West Palm Beach 81.1°F 81.5°F
Corpus Christi 80.9°F 81.0°F
Pensacola 80.1°F 79.4°F
Galveston 79.6°F 79.5°F
Houston 79.5°F 78.9°F
New Orleans 79.5°F 79.9°F

Best time for vacation in Boston

Sunniest months:
August 16 days
July 15 days
November 14 days
Warmest months:
July 81.9 °F
August 80.3 °F
June 74.2 °F
Warmest sea temp:
August 67.6 °F
July 66.8 °F
September 64.3 °F
Coldest months:
January 33.2 °F
February 34.6 °F
December 39.2 °F
Rainiest months:
April 5 days
May 4 days
October 4 days
Windiest months:
January 10.7 mph
March 10.6 mph
April 10.3 mph

Boston on a weather map

Boston
+45°F
E 13 mph
Feels like: +37°F
Precip.: 0%
Places in USA:
Name
°F
+57°F
+72°F
+72°F
+73°F
+66°F
+82°F
+75°F
+64°F
+48°F
+66°F
+54°F
+84°F
+86°F
+57°F
+43°F
24 Hours Forecast
Boston
Local time: 11:04
April 06, monday
1200
45°F
E
13 mph
1500
46°F
E
14 mph
1800
48°F
E
13 mph
2100
43°F
E
9 mph
April 07, tuesday
0000
39°F
E
7 mph
0300
36°F
E
6 mph
0600
36°F
NE
6 mph
0900
37°F
E
7 mph
Units of measurement: °C / °F