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Dennis, MA Marine Weather Forecast

Station 44090 - Cape Cod Bay, MA (221)

April 1, 2026 12:30 am EDT
Location: 41.84N 70.329W
Significant Wave Height: 1.6 ft
Dominant Wave Period: 5 sec
Average Period: 3.4 sec
Mean Wave Direction: N (4°)
Air Temperature: 39.4°F (4.1°C)
Water Temperature: 39.4°F (4.1°C)


Overnight - 41°F
Apr 01, 2026
18 mph SW
Patchy Fog
Patchy fog before 5am. Mostly cloudy. Low around 41, with temperatures rising to around 50 overnight. Southwest wind around 18 mph, with gusts as high as 30 mph.
Wednesday - 54°F
Apr 01, 2026
8 to 18 mph SW
Rain Showers Likely
Patchy fog before 7am, then rain showers likely and patchy fog. Mostly cloudy. High near 54, with temperatures falling to around 47 in the afternoon. Southwest wind 8 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Wednesday Night - 38°F
Apr 01, 2026
7 to 14 mph NE
Rain Showers
Rain showers and patchy fog. Cloudy, with a low around 38. Northeast wind 7 to 14 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Thursday - 42°F
Apr 02, 2026
15 mph NE
Rain Showers Likely
Rain showers likely and patchy fog. Cloudy, with a high near 42. Northeast wind around 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Thursday Night - 37°F
Apr 02, 2026
6 to 13 mph E
Chance Rain Showers then Patchy Fog
A chance of rain showers and patchy fog before 8pm, then patchy fog and a slight chance of rain showers between 8pm and 5am. Cloudy, with a low around 37. East wind 6 to 13 mph. Chance of precipitation is 30%.
Friday - 52°F
Apr 03, 2026
5 to 14 mph S
Mostly Cloudy
Mostly cloudy, with a high near 52. South wind 5 to 14 mph.
Friday Night - 45°F
Apr 03, 2026
12 to 15 mph SW
Mostly Cloudy
Mostly cloudy, with a low around 45. Southwest wind 12 to 15 mph.
Saturday - 53°F
Apr 04, 2026
10 mph N
Partly Sunny
Partly sunny, with a high near 53. North wind around 10 mph.
Saturday Night - 41°F
Apr 04, 2026
12 mph SE
Mostly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 2am. Mostly cloudy, with a low around 41. Southeast wind around 12 mph.
Sunday - 55°F
Apr 05, 2026
13 to 17 mph S
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a high near 55. South wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 50%.
Sunday Night - 39°F
Apr 05, 2026
10 to 16 mph W
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a low around 39. West wind 10 to 16 mph. Chance of precipitation is 60%.
Monday - 48°F
Apr 06, 2026
7 to 10 mph NW
Chance Rain Showers then Mostly Sunny
A chance of rain showers before 9am. Mostly sunny, with a high near 48. Northwest wind 7 to 10 mph. Chance of precipitation is 40%.
Monday Night - 36°F
Apr 06, 2026
8 mph NW
Mostly Clear
Mostly clear, with a low around 36. Northwest wind around 8 mph.
Tuesday - 45°F
Apr 07, 2026
9 mph NE
Mostly Sunny
Mostly sunny, with a high near 45. Northeast wind around 9 mph.

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