Current sea water temperature:
+38.3°F
| Minimum sea water temperature in December: | 50.9°F |
| Maximum sea water temperature in December: | 37.4°F |
| Average sea water temperature in December: | 44.1°F |
| more information | |
14 days
forecast
forecast
| Dennis Port |
monthly
weather
weather
| Dennis Port |
Sea water temperature for the last 10 days:
| December 21 | 38.3°F | December 16 | 38.1°F |
| December 20 | 40.1°F | December 15 | 41.4°F |
| December 19 | 38.8°F | December 14 | 41.0°F |
| December 18 | 37.4°F | December 13 | 39.6°F |
| December 17 | 40.6°F | December 12 | 41.4°F |
Monthly sea water temperature, °F
When is the warmest sea in Dennis Port?
Based on the data about daily sea water temperature for the last three years the warmest sea in Dennis Port was noticed in August, July and September.
Monthly Sea Temperatures in Dennis Port, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 71.4°F. The highest and lowest sea temperatures during the month were 74.5°F and 68.5°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 70.3°F. The highest and lowest sea temperatures during the month were 73.6°F and 65.7°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 68.5°F. The highest and lowest sea temperatures during the month were 71.2°F and 66.6°F.
current
weather
weather
| Dennis Port |
weather in
December
December
| Dennis Port |
Best time for vacation in Dennis Port
Dennis Port on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Dennis Port
Local time: 06:24
December 21, sunday
0900
45°F
NE
22 mph
22 mph
1200
46°F
E
18 mph
18 mph
1500
45°F
E
14 mph
14 mph
1800
39°F
SE
24 mph
24 mph
2100
34°F
SE
22 mph
22 mph
December 22, monday
0000
32°F
E
22 mph
22 mph
0300
28°F
SE
24 mph
24 mph
0600
28°F
SE
25 mph
25 mph
