Measurements:
°C
°F
Old Saybrook
40°F
SE 6 mph
Feels like: 36°F
Precip: 0%
World Resorts USA Old Saybrook Weather

Old Saybrook Sea Water Temperature

Current Sea Water Temperature:
+32.4°F
Maximum Sea Water Temperature in February: 41.0°F
Minimum Sea Water Temperature in February: 31.0°F
Average water temperature in February: 37.4°F

Sea Water Temperature for the Last 10 Days:

February 21 32.4°F February 16 31.2°F
February 20 31.6°F February 15 31.0°F
February 19 31.6°F February 14 31.2°F
February 18 31.6°F February 13 31.8°F
February 17 32.4°F February 12 31.6°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 34.5 °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 +28
Hawaii +70
Honolulu +70
Houston +74
Las Vegas +42
Los Angeles +48
Maui +66
Miami +86
Miami Beach +78
New York +42
San Diego +50
San Francisco +46
Sarasota +74
Tampa +78
Washington +48
24 Hours Weather Forecast
Old Saybrook
Local time: 11:04
21 feb, saturday
1200 40°F
SE
6 mph
1500 42°F
SE
4 mph
1800 38°F
W
4 mph
2100 34°F
W
9 mph
22 feb, sunday
0000 32°F
W
12 mph
0300 28°F
W
11 mph
0600 28°F
SW
10 mph
0900 30°F
W
13 mph