Current sea water temperature:
+42.1°F
| Minimum sea water temperature in December: | 51.6°F |
| Maximum sea water temperature in December: | 41.4°F |
| Average sea water temperature in December: | 46.4°F |
| more information | |
14 days
forecast
forecast
| Chatham |
monthly
weather
weather
| Chatham |
Sea water temperature for the last 10 days:
| December 26 | 42.1°F | December 21 | 42.8°F |
| December 25 | 42.1°F | December 20 | 42.8°F |
| December 24 | 42.6°F | December 19 | 42.4°F |
| December 23 | 42.6°F | December 18 | 41.4°F |
| December 22 | 44.2°F | December 17 | 43.2°F |
Monthly sea water temperature, °F
When is the warmest sea in Chatham?
Based on the data about daily sea water temperature for the last three years the warmest sea in Chatham was noticed in August, July and September.
Monthly Sea Temperatures in Chatham, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.8°F. The highest and lowest sea temperatures during the month were 70.3°F and 65.1°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 66.9°F. The highest and lowest sea temperatures during the month were 69.8°F and 62.8°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 65.5°F. The highest and lowest sea temperatures during the month were 68.5°F and 63.9°F.
current
weather
weather
| Chatham |
weather in
December
December
| Chatham |
Best time for vacation in Chatham
Chatham on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Chatham
Local time: 08:25
December 26, friday
0900
23°F
S
22 mph
22 mph
1200
25°F
S
19 mph
19 mph
1500
25°F
S
15 mph
15 mph
1800
27°F
S
11 mph
11 mph
2100
27°F
SW
8 mph
8 mph
December 27, saturday
0000
28°F
S
5 mph
5 mph
0300
28°F
S
6 mph
6 mph
0600
30°F
SW
10 mph
10 mph
