Measurements:
°C
°F
CURRENT WEATHER
11:06
Chatham
64°F
SW 12 mph
Feels like: 64°F
Precip: 4%
World Resorts USA Chatham Weather

7 Day Weather Forecast

09.15
tue
DAY
64°F
SW 12 mph
precip
4%
NIGHT
58°F
NW 5 mph
precip
8%
09.16
wed
DAY
68°F
N 10 mph
precip
12%
NIGHT
66°F
NE 8 mph
precip
12%
09.17
thu
DAY
76°F
NE 9 mph
precip
16%
NIGHT
70°F
NE 11 mph
precip
28%
09.18
fri
DAY
72°F
SE 12 mph
precip
8%
NIGHT
62°F
SW 20 mph
precip
4%
09.19
sat
DAY
60°F
SW 9 mph
precip
7%
NIGHT
58°F
N 10 mph
precip
17%
09.20
sun
DAY
62°F
N 20 mph
precip
86%
NIGHT
64°F
NE 18 mph
precip
33%
09.21
mon
DAY
62°F
SW 14 mph
precip
17%
NIGHT
58°F
W 11 mph
precip
9%

Chatham Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Chatham was 19.7°F. The maximum and minimum values were 18.9°F and 21.3°F respectively.

Chatham on the Weather Map

Best Time to Visit Chatham
The most sunny months:
June 15 days
November 14 days
August 14 days
The most warm months:
July 77.4 °F
August 76.9 °F
September 70.6 °F
Warmest sea temperature:
August 70.8 °F
July 69.9 °F
September 67.2 °F
The most cold months:
January 34.5 °F
February 34.7 °F
December 40.6 °F
The most rainy months:
October 3 days
January 2 days
April 2 days
The most windy months:
January 14 mph
December 14 mph
March 14 mph
more details