19.09
sat
sat
Day
59°F
SW 14 mph
Precip.
3%
3%
Night
54°F
NW 7 mph
Precip.
6%
6%
20.09
sun
sun
Day
63°F
NW 10 mph
Precip.
13%
13%
Night
59°F
NW 10 mph
Precip.
66%
66%
21.09
mon
mon
Day
61°F
SW 19 mph
Precip.
50%
50%
Night
63°F
SW 19 mph
Precip.
16%
16%
22.09
tue
tue
Day
59°F
SW 19 mph
Precip.
19%
19%
Night
57°F
W 17 mph
Precip.
15%
15%
23.09
wed
wed
Day
61°F
W 22 mph
Precip.
17%
17%
Night
61°F
SW 22 mph
Precip.
21%
21%
24.09
thu
thu
Day
59°F
SW 25 mph
Precip.
68%
68%
Night
59°F
SW 25 mph
Precip.
71%
71%
25.09
fri
fri
Day
57°F
S 21 mph
Precip.
30%
30%
Night
61°F
S 11 mph
Precip.
11%
11%
sea water
temperature
temperature
| Dennis Port |
monthly
weather
weather
| Dennis Port |
current
weather
weather
| Dennis Port |
14 days
forecast
forecast
| Dennis Port |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 70.6°F. The highest and lowest sea temperatures during the month were 73.4°F and 69.1°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 60.7°F. The highest and lowest sea temperatures during the month were 67.8°F and 55.4°F.
Air temperature in Dennis Port, °F
Precipitation total in Dennis Port, in.
* Charts above show average data for the last 3 years.
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: 06:11
September 19, saturday
0900
59°F
SW
15 mph
15 mph
1200
59°F
SW
14 mph
14 mph
1500
59°F
SW
11 mph
11 mph
1800
57°F
SW
7 mph
7 mph
2100
54°F
W
6 mph
6 mph
September 20, sunday
0000
54°F
NW
7 mph
7 mph
0300
54°F
NW
6 mph
6 mph
0600
54°F
NW
6 mph
6 mph
