World Resorts USA Stonington Weather

Stonington sea water temperature

Current sea water temperature:
+54.3°F
Minimum sea water temperature in May: 58.6°F
Maximum sea water temperature in May: 46.4°F
Average sea water temperature in May: 51.5°F

Sea water temperature for the last 10 days:

May 25 54.3°F May 20 51.4°F
May 24 54.9°F May 19 52.0°F
May 23 54.7°F May 18 50.5°F
May 22 54.3°F May 17 49.8°F
May 21 52.5°F May 16 49.3°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
+59°F
E 6 mph
Feels like: +59°F
Precip.: 0%
Places in USA:
Name
°F
+61°F
+75°F
+75°F
+84°F
+63°F
+77°F
+81°F
+70°F
+63°F
+64°F
+54°F
+79°F
+81°F
+77°F
+61°F
24 Hours Forecast
Stonington
Local time: 22:42
May 26, tuesday
0000
59°F
E
6 mph
0300
57°F
S
6 mph
0600
57°F
S
6 mph
0900
64°F
W
3 mph
1200
68°F
N
6 mph
1500
66°F
NE
7 mph
1800
63°F
NE
7 mph
2100
57°F
NE
7 mph
Units of measurement: °C / °F