World Resorts USA Stonington Weather

Stonington sea water temperature

Current sea water temperature:
+50.2°F
Minimum sea water temperature in December: 53.6°F
Maximum sea water temperature in December: 43.9°F
Average sea water temperature in December: 49.2°F

Sea water temperature for the last 10 days:

December 4 50.2°F November 29 49.8°F
December 3 50.0°F November 28 51.4°F
December 2 50.0°F November 27 51.1°F
December 1 50.2°F November 26 51.1°F
November 30 49.8°F November 25 50.9°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
September 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 36.8 °F
February 38.0 °F
December 41.8 °F
Rainiest months:
October 4 days
November 3 days
July 3 days
Windiest months:
January 10.1 mph
March 9.8 mph
February 9.7 mph

Stonington on a weather map

Stonington
+21°F
SE 17 mph
Feels like: +9°F
Precip.: 0%
Places in USA:
Name
°F
+30°F
+77°F
+77°F
+45°F
+55°F
+70°F
+77°F
+70°F
+25°F
+57°F
+48°F
+63°F
+63°F
+46°F
+5°F
24 Hours Forecast
Stonington
Local time: 23:52
December 05, friday
0000
21°F
SE
17 mph
0300
16°F
S
10 mph
0600
14°F
S
6 mph
0900
19°F
S
3 mph
1200
27°F
N
6 mph
1500
28°F
NE
7 mph
1800
30°F
NE
4 mph
2100
32°F
NE
3 mph
Units of measurement: °C / °F