Current sea water temperature:
+42.6°F
| Minimum sea water temperature in December: | 52.0°F |
| Maximum sea water temperature in December: | 39.6°F |
| Average sea water temperature in December: | 45.2°F |
| more information | |
14 days
forecast
forecast
| Falmouth |
monthly
weather
weather
| Falmouth |
Sea water temperature for the last 10 days:
| December 14 | 42.6°F | December 9 | 44.2°F |
| December 13 | 42.8°F | December 8 | 44.6°F |
| December 12 | 42.6°F | December 7 | 45.7°F |
| December 11 | 43.3°F | December 6 | 45.9°F |
| December 10 | 43.7°F | December 5 | 45.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Falmouth?
Based on the data about daily sea water temperature for the last three years the warmest sea in Falmouth was noticed in August, July and September.
Monthly Sea Temperatures in Falmouth, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 72.4°F. The highest and lowest sea temperatures during the month were 75.0°F and 70.5°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 72.1°F. The highest and lowest sea temperatures during the month were 74.7°F and 67.8°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 69.6°F. The highest and lowest sea temperatures during the month were 71.1°F and 67.5°F.
current
weather
weather
| Falmouth |
weather in
December
December
| Falmouth |
Best time for vacation in Falmouth
Falmouth on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Falmouth
Local time: 21:26
December 15, monday
0000
25°F
SE
22 mph
22 mph
0300
21°F
SE
22 mph
22 mph
0600
21°F
SE
21 mph
21 mph
0900
25°F
SE
19 mph
19 mph
1200
30°F
SE
18 mph
18 mph
1500
34°F
E
17 mph
17 mph
1800
32°F
E
18 mph
18 mph
2100
28°F
E
17 mph
17 mph
