Southwest Harbor Weather in March

March in Southwest Harbor brings low temperatures, with highs of 5°C (41°F) and nights dropping to -4°C (25°F). Rainfall is on the higher side this month, averaging around 105 mm (4.1 in), so keep a rain jacket handy.

Rainfall in Southwest Harbor in March

Records from the past 30 years suggest around 12 days of snow/rain, with 105 mm (4.1 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Southwest Harbor in March

In March, Southwest Harbor gets low temperatures, with highs of 5°C (41°F). Nights cool to around -4°C (25°F). It stays very cold throughout much of the day, so warm winter clothing is essential. With lows of -4°C (25°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated. You will probably experience very cold weather in this month, so dressing warmly is vital. Be sure to prepare for the chill with the right clothing.

If you prefer dry days with pleasant temperatures, March may not be the ideal month to visit Southwest Harbor. Our weather planner can help you explore destinations with more pleasant weather conditions.