World Resorts USA Stonington Weather

Stonington sea water temperature

Current sea water temperature:
+69.6°F
Minimum sea water temperature in August: 74.8°F
Maximum sea water temperature in August: 66.2°F
Average sea water temperature in August: 70.1°F

Sea water temperature for the last 10 days:

August 25 69.6°F August 20 69.8°F
August 24 70.3°F August 19 69.3°F
August 23 69.4°F August 18 68.7°F
August 22 69.8°F August 17 69.1°F
August 21 71.1°F August 16 70.7°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:
2026
2025
2024

The average sea water temperature in August of 2026 was 70.5°F. The highest and lowest sea temperatures during the month were 74.5°F and 68.5°F.

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 67.6°F. The highest and lowest sea temperatures during the month were 70.5°F and 65.8°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
September 14 days
October 14 days
Warmest months:
July 79.9 °F
August 78.1 °F
June 74.0 °F
Warmest sea temp:
August 70.1 °F
July 68.5 °F
September 68.2 °F
Coldest months:
January 36.2 °F
February 37.3 °F
December 41.1 °F
Rainiest months:
October 4 days
July 3 days
November 3 days
Windiest months:
January 10.5 mph
December 10.3 mph
March 10.0 mph

Stonington on a weather map

Stonington
+64°F
SE 9 mph
Feels like: +64°F
Precip.: 10%
Places in USA:
Name
°F
+64°F
+68°F
+79°F
+90°F
+72°F
+79°F
+63°F
+77°F
+66°F
+70°F
+59°F
+70°F
+77°F
+82°F
+70°F
24 Hours Forecast
Stonington
Local time: 01:53
August 26, wednesday
0300
64°F
SE
9 mph
0600
61°F
SE
9 mph
0900
68°F
SE
7 mph
1200
73°F
NE
8 mph
1500
72°F
NE
15 mph
1800
73°F
NE
15 mph
2100
70°F
NE
14 mph
August 27, thursday
0000
70°F
NE
9 mph
Units of measurement: °C / °F