Bar Harbor (Acadia) weather in October
Temperature, sea and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Fair
Best time to visit: June – September
What is the weather like in Bar Harbor (Acadia) in October?
In October, Bar Harbor (Acadia) is cool: daytime highs average 13 °C, and nights cool down to about 9 °C. The sea averages 11.6 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 116 mm in total. All in all, October is a so-so month for a holiday in Bar Harbor (Acadia).
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 83 | 51 | 21 |
| Day | 18° | 13° | 8° |
| Night | 14° | 9° | 3° |
| Sea | 13° | 12° | 10° |
| Sun | 6 h | 5 h | 4 h |
| Rain days | 8 | 10 | 10 |
More details for October
- Daylight
- 11 h 4 min06:46 – 17:51
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 23 km/haverage daily peakAll months
- Cloud cover
- 57 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−4America/New_York
How the score comes together
- Temperatureweight 50 %53 %
- Sunshineweight 20 %35 %
- Few rainy daysweight 30 %59 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in October
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Bar Harbor (Acadia) in October: quick answers
Is Bar Harbor (Acadia) hot in October?
No. In October, Bar Harbor (Acadia) is cool: daytime highs average 13 °C and nights drop to about 9 °C.
Can you swim in Bar Harbor (Acadia) in October?
Only if you don't mind cold water: in October the sea averages just 11.6 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Bar Harbor (Acadia) in October?
Rain is frequent, with about 10 rainy days and 116 mm in total.
Bar Harbor (Acadia) month by month
The whole year in Bar Harbor (Acadia)All destinations: USAWhere to go in OctoberSea temperature in October
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences