Bar Harbor (Acadia) weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Fair
Best time to visit: June – September
What is the weather like in Bar Harbor (Acadia) in May?
In May, Bar Harbor (Acadia) is cool: daytime highs average 13 °C, and nights cool down to about 8 °C. The sea averages 6.8 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 82 mm in total. All in all, May is a so-so month for a holiday in Bar Harbor (Acadia).
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 14 h 45 min05:06 – 19:51
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 21 km/haverage daily peakAll months
- Cloud cover
- 65 %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 %65 %
- Few rainy daysweight 30 %53 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Bar Harbor (Acadia) in May: quick answers
Is Bar Harbor (Acadia) hot in May?
No. In May, Bar Harbor (Acadia) is cool: daytime highs average 13 °C and nights drop to about 8 °C.
Can you swim in Bar Harbor (Acadia) in May?
Only if you don't mind cold water: in May the sea averages just 6.8 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Bar Harbor (Acadia) in May?
Rain is frequent, with about 11 rainy days and 82 mm in total.
Bar Harbor (Acadia) month by month
The whole year in Bar Harbor (Acadia)All destinations: USAWhere to go in MaySea temperature in May
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