19.09
sat
sat
Day
59°F
SW 15 mph
Precip.
3%
3%
Night
55°F
NW 9 mph
Precip.
4%
4%
20.09
sun
sun
Day
61°F
NW 11 mph
Precip.
14%
14%
Night
59°F
NW 12 mph
Precip.
69%
69%
21.09
mon
mon
Day
61°F
SW 19 mph
Precip.
55%
55%
Night
61°F
SW 21 mph
Precip.
17%
17%
22.09
tue
tue
Day
57°F
SW 21 mph
Precip.
18%
18%
Night
57°F
W 19 mph
Precip.
15%
15%
23.09
wed
wed
Day
61°F
W 25 mph
Precip.
17%
17%
Night
59°F
SW 25 mph
Precip.
21%
21%
24.09
thu
thu
Day
59°F
SW 27 mph
Precip.
75%
75%
Night
59°F
SW 28 mph
Precip.
70%
70%
25.09
fri
fri
Day
57°F
S 21 mph
Precip.
21%
21%
Night
61°F
S 12 mph
Precip.
11%
11%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 67.1°F. The highest and lowest sea temperatures during the month were 70.3°F and 65.7°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 59.0°F. The highest and lowest sea temperatures during the month were 64.4°F and 54.9°F.
Air temperature in Chatham, °F
Precipitation total in Chatham, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Chatham
Chatham on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Chatham
Local time: 06:09
September 19, saturday
0900
59°F
SW
16 mph
16 mph
1200
59°F
SW
15 mph
15 mph
1500
59°F
SW
11 mph
11 mph
1800
57°F
SW
7 mph
7 mph
2100
55°F
W
7 mph
7 mph
September 20, sunday
0000
55°F
NW
9 mph
9 mph
0300
55°F
NW
7 mph
7 mph
0600
55°F
NW
7 mph
7 mph
