Weather forecast in Southwest Harbor

This data display current weather and forecast for the coming days in Southwest Harbor. In addition to temperature, wind, humidity and pressure, we include data on the probability of precipitation so you can have all the information about your destination before your trip.

Southwest Harbor current temperature and weather

September 26, 2025

Night
65.1°F Feels like: 65.1°F	Overcast
	Wind: 16.1 mph (25.9 Km/h) SW Pressure: 29.42 inHg (996 hPa) Humidity: 97%	Precip. prob.: 0% Visibility: 1 mi (2 km) UV index: 0
Morning
66.2°F Feels like: 66.2°F	Sunny
	Wind: 7.2 mph (11.5 Km/h) W Pressure: 29.51 inHg (999 hPa) Humidity: 89%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 1.2
Day
71.8°F Feels like: 76.1°F	Cloudy
	Wind: 8.1 mph (13 Km/h) W Pressure: 29.67 inHg (1005 hPa) Humidity: 63%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 2.3
Evening
66.7°F Feels like: 66.7°F	Clear
	Wind: 5.6 mph (9 Km/h) W Pressure: 29.76 inHg (1008 hPa) Humidity: 68%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 0

Marine weather forecast Southwest Harbor

The graphs show wave heights and directions, as well as wind speed and direction in Southwest Harbor for the coming days. Click on the sea state chart for more details

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Our report for Southwest Harbor is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.