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West Islip, NY Marine Weather Forecast

This Afternoon - 57°F
Dec 19, 2025
25 mph W
Rain Showers Likely
Rain showers likely. Partly sunny. High near 57, with temperatures falling to around 48 in the afternoon. West wind around 25 mph, with gusts as high as 44 mph. Chance of precipitation is 70%.
Tonight - 28°F
Dec 19, 2025
17 to 29 mph W
Chance Rain Showers then Partly Cloudy
A chance of rain showers before 7pm. Partly cloudy. Low around 28, with temperatures rising to around 30 overnight. Wind chill values as low as 17. West wind 17 to 29 mph, with gusts as high as 47 mph. Chance of precipitation is 30%.
Saturday - 44°F
Dec 20, 2025
10 to 15 mph W
Mostly Sunny
Mostly sunny. High near 44, with temperatures falling to around 38 in the afternoon. Wind chill values as low as 19. West wind 10 to 15 mph.
Saturday Night - 37°F
Dec 20, 2025
12 to 17 mph SW
Mostly Cloudy
Mostly cloudy. Low around 37, with temperatures rising to around 40 overnight. Southwest wind 12 to 17 mph.
Sunday - 45°F
Dec 21, 2025
16 to 20 mph W
Mostly Sunny
Mostly sunny. High near 45, with temperatures falling to around 40 in the afternoon. West wind 16 to 20 mph.
Sunday Night - 27°F
Dec 21, 2025
16 to 20 mph NW
Mostly Clear
Mostly clear. Low around 27, with temperatures rising to around 29 overnight.
Monday - 38°F
Dec 22, 2025
9 to 16 mph NW
Sunny
Sunny, with a high near 38.
Monday Night - 32°F
Dec 22, 2025
8 to 12 mph W
Mostly Cloudy then Chance Rain And Snow
A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Tuesday - 44°F
Dec 23, 2025
12 to 20 mph SW
Chance Rain And Snow then Rain And Snow Likely
A chance of rain and snow before 7am, then rain and snow likely. Cloudy, with a high near 44. Chance of precipitation is 70%.
Tuesday Night - 36°F
Dec 23, 2025
17 mph W
Chance Light Rain then Mostly Cloudy
A chance of rain before 7pm. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Wednesday - 43°F
Dec 24, 2025
9 to 15 mph NW
Mostly Sunny
Mostly sunny, with a high near 43.
Wednesday Night - 33°F
Dec 24, 2025
5 to 8 mph NW
Mostly Cloudy then Slight Chance Light Rain
A slight chance of rain after 1am. Mostly cloudy, with a low around 33.
Christmas Day - 47°F
Dec 25, 2025
7 to 13 mph SW
Chance Light Rain
A chance of rain. Mostly cloudy, with a high near 47. Chance of precipitation is 40%.
Thursday Night - 41°F
Dec 25, 2025
13 mph SW
Chance Light Rain
A chance of rain. Cloudy, with a low around 41.

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