World Resorts USA Stonington Weather

Stonington sea water temperature

Current sea water temperature:
+45.9°F
Minimum sea water temperature in April: 48.4°F
Maximum sea water temperature in April: 39.2°F
Average sea water temperature in April: 44.8°F

Sea water temperature for the last 10 days:

April 29 45.9°F April 24 44.2°F
April 28 46.0°F April 23 43.0°F
April 27 46.4°F April 22 43.0°F
April 26 44.8°F April 21 43.2°F
April 25 45.3°F April 20 44.2°F

When is the warmest sea in Stonington?

Based on the data about daily sea water temperature for the last three years the warmest sea in Stonington was noticed in August, July and September.

Monthly Sea Temperatures in Stonington, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 69.7°F. The highest and lowest sea temperatures during the month were 73.6°F and 67.8°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 68.9°F. The highest and lowest sea temperatures during the month were 72.0°F and 65.3°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 68.2°F. The highest and lowest sea temperatures during the month were 70.9°F and 66.9°F.

Best time for vacation in Stonington

Sunniest months:
November 16 days
October 14 days
December 14 days
Warmest months:
July 79.5 °F
August 78.1 °F
June 73.3 °F
Warmest sea temp:
August 70.0 °F
July 68.7 °F
September 68.2 °F
Coldest months:
January 36.2 °F
February 37.3 °F
December 41.1 °F
Rainiest months:
October 4 days
November 3 days
July 3 days
Windiest months:
January 10.5 mph
December 10.3 mph
March 10.0 mph

Stonington on a weather map

Stonington
+54°F
SW 5 mph
Feels like: +52°F
Precip.: 0%
Places in USA:
Name
°F
+55°F
+73°F
+73°F
+57°F
+52°F
+79°F
+79°F
+66°F
+54°F
+54°F
+50°F
+77°F
+75°F
+75°F
+52°F
24 Hours Forecast
Stonington
Local time: 08:27
April 29, wednesday
0900
54°F
SW
5 mph
1200
63°F
N
9 mph
1500
59°F
N
7 mph
1800
52°F
NE
7 mph
2100
48°F
N
5 mph
April 30, thursday
0000
46°F
NW
5 mph
0300
46°F
N
4 mph
0600
48°F
W
2 mph
Units of measurement: °C / °F