Measurements:
°C
°F
New London
18°F
SE 15 mph
Feels like: 6°F
Precip: 0%
World Resorts USA New London Weather

New London Sea Water Temperature

Current Sea Water Temperature:
+35.6°F
Maximum Sea Water Temperature in January: 46.4°F
Minimum Sea Water Temperature in January: 35.6°F
Average water temperature in January: 41.5°F

Sea Water Temperature for the Last 10 Days:

January 29 35.6°F January 24 36.8°F
January 28 36.0°F January 23 37.6°F
January 27 38.0°F January 22 37.6°F
January 26 37.0°F January 21 38.0°F
January 25 37.0°F January 20 38.4°F

When is the Warmest Sea for New London?

According to our data for the last three years for New London the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for New London was 72.6°F. The maximum and minimum values were 71.0°F and 76.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for New London was 72.2°F. The maximum and minimum values were 67.4°F and 75.4°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for New London was 70.9°F. The maximum and minimum values were 69.8°F and 73.4°F respectively.

Best Time to Visit New London
The most sunny months:
November 17 days
October 14 days
December 13 days
The most warm months:
July 83.2 °F
August 81.4 °F
June 76.1 °F
Warmest sea temperature:
August 72.9 °F
July 71.2 °F
September 70.9 °F
The most cold months:
January 34.8 °F
February 36.7 °F
December 39.9 °F
The most rainy months:
July 3 days
November 3 days
October 3 days
The most windy months:
January 10 mph
December 10 mph
March 10 mph

New London on the Weather Map

USA Resorts:
NAME
Chicago +12
Hawaii +80
Honolulu +80
Houston +62
Las Vegas +66
Los Angeles +76
Maui +74
Miami +70
Miami Beach +74
New York +18
San Diego +80
San Francisco +58
Sarasota +68
Tampa +70
Washington +18
24 Hours Weather Forecast
New London
Local time: 14:09
29 jan, thursday
1500 18°F
SE
15 mph
1800 12°F
E
12 mph
2100 4°F
SE
16 mph
30 jan, friday
0000 6°F
SE
16 mph
0300 8°F
SE
15 mph
0600 4°F
SE
14 mph
0900 4°F
SE
17 mph
1200 12°F
E
19 mph