Weather in Bar Harbor in September
Bar Harbor, United States averages a high of 18°C (64.4°F) and low of 13.3°C (55.9°F) in September, with 8 rain days and 9 hours of daily sunshine. Travel score: 74.2/100 (Good). The best time to visit Bar Harbor is August.
High
18°C64°F
Low
13°C56°F
🌧️
8
rain days
☀️
9
hrs/day sunshine
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81%
humidity
74— Good
September in Bar Harbor is mild and mostly dry — good for most activities.
What are the average temperatures in Bar Harbor?
How much does it rain in Bar Harbor in September?
Bar Harbor receives an average of 98.8mm of rainfall across 8 rainy days in September. The annual total is 1149.6mm.
What should I pack for Bar Harbor in September?
Essentials
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Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 18°C
Recommended
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Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
🎉Visiting United States in September?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31