Measurements:
°C
°F
CURRENT WEATHER
11:10
Dennis Port
64°F
SW 12 mph
Feels like: 64°F
Precip: 4%
World Resorts USA Dennis Port Weather

7 Day Weather Forecast

09.15
tue
DAY
64°F
SW 12 mph
precip
4%
NIGHT
56°F
N 4 mph
precip
10%
09.16
wed
DAY
68°F
NE 9 mph
precip
16%
NIGHT
66°F
NE 6 mph
precip
13%
09.17
thu
DAY
78°F
NE 6 mph
precip
8%
NIGHT
70°F
NE 9 mph
precip
26%
09.18
fri
DAY
72°F
SE 11 mph
precip
13%
NIGHT
64°F
SW 19 mph
precip
3%
09.19
sat
DAY
62°F
SW 9 mph
precip
6%
NIGHT
58°F
N 9 mph
precip
17%
09.20
sun
DAY
64°F
N 16 mph
precip
83%
NIGHT
62°F
NE 20 mph
precip
33%
09.21
mon
DAY
64°F
SW 14 mph
precip
18%
NIGHT
58°F
W 8 mph
precip
10%

Dennis Port Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Dennis Port was 21.6°F. The maximum and minimum values were 20.6°F and 23.0°F respectively.

Dennis Port on the Weather Map

Best Time to Visit Dennis Port
The most sunny months:
November 15 days
June 14 days
August 13 days
The most warm months:
July 79.1 °F
August 78.3 °F
June 72.0 °F
Warmest sea temperature:
August 75.5 °F
July 74.4 °F
September 71.1 °F
The most cold months:
January 34.7 °F
February 35.0 °F
December 40.7 °F
The most rainy months:
October 3 days
January 2 days
April 2 days
The most windy months:
January 14 mph
December 14 mph
March 14 mph
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