Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Southwest Harbor Weather in September
During September, Southwest Harbor experiences pleasant daytime temperatures of 20°C (68°F) and cooler nights around 11°C (52°F). As part of the summer season, expect quite a bit of rainfall. Around 94 mm (3.7 in) is typical.
Rainfall in Southwest Harbor in September
Climate statistics over the past 30 years suggest around 10 days of rain, with 94 mm (3.7 in) average 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 September
Southwest Harbor in September is worth a visit. The temperature is excellent, with 20°C (68°F) during the day and 11°C (52°F) at night. The summer season is characteristic of September. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Southwest Harbor Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
20°C (68°F)
Chance of Rain
34%
Precipitation
94 mm (3.7 in)
Rainy days
10 days
Southwest Harbor Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Southwest Harbor - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Southwest Harbor in September
For Southwest Harbor in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.
What To Do in Southwest Harbor in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Southwest Harbor 3-Day Forecast
More climate data for Southwest Harbor
See the full Southwest Harbor climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
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