Southwest Harbor Weather in August

August in Southwest Harbor typically sees daytime highs of 23°C (73°F) and nighttime lows of 14°C (57°F). With the least rainfall of the year, it's a reliably dry month. It falls within the summer season.

Rainfall in Southwest Harbor in August

As the driest month, it's a great time for hiking and exploring the area. Past climate data indicates that roughly 11 days will see rain, totalling around 85 mm (3.3 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Southwest Harbor in August

August in Southwest Harbor is generally excellent, with days reaching 23°C (73°F) and nights settling around 14°C (57°F). The summer season is characteristic of August. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 14°C (57°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

So this is a great month to visit if you prefer dry days with pleasant temperatures.