Measurements:
°C
°F
Old Saybrook
18°F
SE 11 mph
Feels like: 6°F
Precip: 0%
World Resorts USA Old Saybrook Weather

Old Saybrook Sea Water Temperature

Current Sea Water Temperature:
+34.0°F
Maximum Sea Water Temperature in January: 46.0°F
Minimum Sea Water Temperature in January: 34.0°F
Average water temperature in January: 40.8°F

Sea Water Temperature for the Last 10 Days:

January 29 34.0°F January 24 35.6°F
January 28 34.4°F January 23 36.6°F
January 27 34.8°F January 22 36.6°F
January 26 36.0°F January 21 36.8°F
January 25 36.0°F January 20 38.4°F

When is the Warmest Sea for Old Saybrook?

According to our data for the last three years for Old Saybrook 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 Old Saybrook was 73.4°F. The maximum and minimum values were 71.6°F and 75.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Old Saybrook was 72.8°F. The maximum and minimum values were 66.4°F and 76.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Old Saybrook was 71.3°F. The maximum and minimum values were 70.0°F and 73.6°F respectively.

Best Time to Visit Old Saybrook
The most sunny months:
November 17 days
October 14 days
September 14 days
The most warm months:
July 83.5 °F
August 81.7 °F
June 76.0 °F
Warmest sea temperature:
August 74.1 °F
July 72.4 °F
September 71.8 °F
The most cold months:
January 34.7 °F
February 36.5 °F
December 40.0 °F
The most rainy months:
October 4 days
July 3 days
April 3 days
The most windy months:
January 11 mph
December 10 mph
November 10 mph

Old Saybrook on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +74
Honolulu +74
Houston +38
Las Vegas +48
Los Angeles +56
Maui +68
Miami +64
Miami Beach +70
New York +12
San Diego +60
San Francisco +50
Sarasota +58
Tampa +58
Washington +12
24 Hours Weather Forecast
Old Saybrook
Local time: 10:54
29 jan, thursday
1200 18°F
SE
11 mph
1500 18°F
SE
14 mph
1800 12°F
E
12 mph
2100 2°F
SE
16 mph
30 jan, friday
0000 4°F
SE
13 mph
0300 6°F
SE
12 mph
0600 2°F
SE
11 mph
0900 2°F
SE
14 mph