Measurements:
°C
°F
CURRENT WEATHER
10:30
Old Saybrook
60°F
SW 9 mph
Feels like: 58°F
Precip: 7%
World Resorts USA Old Saybrook Weather

7 Day Weather Forecast

09.15
tue
DAY
64°F
NW 6 mph
precip
3%
NIGHT
64°F
N 9 mph
precip
6%
09.16
wed
DAY
72°F
NE 9 mph
precip
5%
NIGHT
70°F
NE 7 mph
precip
12%
09.17
thu
DAY
76°F
NE 6 mph
precip
15%
NIGHT
72°F
NE 9 mph
precip
16%
09.18
fri
DAY
74°F
SE 11 mph
precip
15%
NIGHT
60°F
SW 14 mph
precip
13%
09.19
sat
DAY
64°F
W 9 mph
precip
10%
NIGHT
64°F
NW 11 mph
precip
16%
09.20
sun
DAY
70°F
NE 17 mph
precip
87%
NIGHT
60°F
S 14 mph
precip
24%
09.21
mon
DAY
64°F
W 9 mph
precip
8%
NIGHT
64°F
W 12 mph
precip
18%

Old Saybrook Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Old Saybrook was 21.6°F. The maximum and minimum values were 21.1°F and 22.0°F respectively.

Old Saybrook on the Weather Map

Best Time to Visit Old Saybrook
The most sunny months:
November 17 days
September 14 days
October 14 days
The most warm months:
July 84.0 °F
August 82.1 °F
June 77.2 °F
Warmest sea temperature:
August 74.2 °F
July 72.3 °F
September 71.8 °F
The most cold months:
January 34.5 °F
February 35.9 °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
more details