World Resorts USA Stonington Weather

Stonington sea water temperature

Current sea water temperature:
+65.8°F
Minimum sea water temperature in July: 74.5°F
Maximum sea water temperature in July: 61.9°F
Average sea water temperature in July: 68.6°F

Sea water temperature for the last 10 days:

July 9 65.8°F July 4 67.1°F
July 8 66.4°F July 3 68.4°F
July 7 66.2°F July 2 67.8°F
July 6 66.4°F July 1 65.8°F
July 5 68.4°F June 30 64.6°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 74.0 °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
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
+70°F
NE 9 mph
Feels like: +70°F
Precip.: 14%
Places in USA:
Name
°F
+75°F
+77°F
+97°F
+66°F
+81°F
+86°F
+73°F
+81°F
+73°F
+64°F
+57°F
+82°F
+82°F
+82°F
+72°F
24 Hours Forecast
Stonington
Local time: 00:09
July 10, friday
0300
70°F
NE
6 mph
0600
68°F
NE
4 mph
0900
79°F
SE
6 mph
1200
90°F
E
8 mph
1500
82°F
E
11 mph
1800
79°F
E
9 mph
2100
73°F
SW
4 mph
July 11, saturday
0000
70°F
S
5 mph
Units of measurement: °C / °F