Bar Harbor Weather in October
October in Bar Harbor typically sees daytime highs of 15°C (59°F) and nighttime lows of 6°C (43°F). As the wettest month of the year, expect more rainfall than other months.
Rainfall in Bar Harbor in October
Experience the peak rainfall in this month, with heavy showers being the norm. A poncho is essential to stay dry and comfortable. Historically, approximately 13 days this month are expected to have rain, averaging 166 mm (6.5 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Bar Harbor in October
Temperatures in Bar Harbor in October top out at 15°C (59°F) and drop to 6°C (43°F) overnight. Conditions are often most pleasant around the middle of the day. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Bar Harbor's climate page.
Bar Harbor Temperature in October
Min Temperature
6°C (43°F)
Max Temperature
15°C (59°F)
Chance of Rain
43%
Precipitation
166 mm (6.5 in)
Rainy days
13 days
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Bar Harbor typically drop from around 16°C (61°F) at the start of October to approximately 11°C (52°F) by the end. Nights are cold, with lows typically ranging from 2°C (36°F) to 8°C (46°F).
Average temperatures in October
Historical weather for Bar Harbor in October
Browse day-by-day weather records for Bar Harbor spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bar Harbor historical weather extremes in October
Our historical data for Bar Harbor spans 1997 to 2025, revealing these weather extremes.
- The hottest October day on record in Bar Harbor reached 29°C (84°F) (October 9, 2011).
- The coldest October day was on October 29, 2000, with a maximum of 2°C (36°F).
- The lowest overnight temperature recorded in October was -6°C (21°F) (October 27, 1998).
Best Places in the United States of America in October
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 October →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Bar Harbor in October
The weather can swing between comfortable and chilly in October, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. It's going to pour! Pack a good poncho and prepare for very wet conditions.What To Do in Bar Harbor in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Bar Harbor's climate page.
See the full Bar Harbor climate overview or explore weather in the United States of America.
