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Southwest Harbor, ME Marine Weather Forecast

Station ATGM1 - 8413320 - Bar Harbor, ME

December 24, 2025 6:48 am EST
Location: 44.392N 68.204W
Wind Direction: ESE (120°)
Wind Speed: 18.1 knots
Wind Gust: 20.0 knots
Atmospheric Pressure: 29.89 in (1012.2 mb)
Water Temperature: 38.7°F (3.7°C)


Overnight - 27°F
Dec 24, 2025
20 to 25 mph E
Snow
Snow. Cloudy, with a low around 27. East wind 20 to 25 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Wednesday - 32°F
Dec 24, 2025
12 to 25 mph NE
Snow then Mostly Cloudy
Snow before 10am. Mostly cloudy. High near 32, with temperatures falling to around 25 in the afternoon. Northeast wind 12 to 25 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 7 inches possible.
Wednesday Night - 20°F
Dec 24, 2025
2 to 10 mph NW
Mostly Cloudy then Chance Light Snow
A chance of snow after 5am. Mostly cloudy, with a low around 20. Northwest wind 2 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Christmas Day - 32°F
Dec 25, 2025
3 to 18 mph W
Light Snow
Snow. Mostly cloudy, with a high near 32. West wind 3 to 18 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday Night - 11°F
Dec 25, 2025
20 to 26 mph NW
Slight Chance Light Snow then Freezing Spray
A slight chance of snow before 8pm, then freezing spray. Partly cloudy, with a low around 11. Northwest wind 20 to 26 mph. Chance of precipitation is 20%. New snow accumulation of less than half an inch possible.
Friday - 18°F
Dec 26, 2025
15 to 23 mph N
Freezing Spray
Freezing spray. Sunny, with a high near 18. North wind 15 to 23 mph.
Friday Night - 11°F
Dec 26, 2025
9 to 14 mph N
Freezing Spray then Partly Cloudy
Freezing spray before 7pm. Partly cloudy, with a low around 11. North wind 9 to 14 mph.
Saturday - 22°F
Dec 27, 2025
10 mph N
Partly Sunny
Partly sunny, with a high near 22.
Saturday Night - 16°F
Dec 27, 2025
6 to 9 mph N
Mostly Cloudy
Mostly cloudy, with a low around 16.
Sunday - 33°F
Dec 28, 2025
8 mph W
Mostly Sunny
Mostly sunny, with a high near 33.
Sunday Night - 26°F
Dec 28, 2025
8 to 18 mph S
Light Snow Likely
Snow likely before 3am, then rain and snow likely. Mostly cloudy, with a low around 26. Chance of precipitation is 70%.
Monday - 38°F
Dec 29, 2025
20 to 23 mph SW
Rain And Snow
Rain and snow before 9am, then rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 80%.
Monday Night - 20°F
Dec 29, 2025
24 mph W
Chance Light Snow
A chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 50%.
Tuesday - 28°F
Dec 30, 2025
17 to 22 mph W
Slight Chance Light Snow then Mostly Sunny
A slight chance of snow before 11am. Mostly sunny, with a high near 28.

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