Measurements:
°C
°F
Bar Harbor
78°F
NE 9 mph
Feels like: 80°F
Precip: 0%
World Resorts USA Bar Harbor Weather May Weather in Bar Harbor

Bar Harbor Weather: May

Average Day Temperature: 59.3°F
Average Night Temperature: 46.9°F
Sea Water Temperature: 46.6°F
Number of Sunny Days: 10 days
Sunshine Hours: 14.2 - 15.3 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.1 in

Air Temperature in May, °F

Select Year: 2026 2025 2024

The highest day temperature in May 2026 was 86°F. The lowest night temperature was 36°F. The average values for day and night temperatures during May were 61.5°F и 47.2°F respectivly.

Bar Harbor Water Sea Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Bar Harbor was 45.5°F. The maximum and minimum values were 40.2°F and 49.8°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Bar Harbor is 1.1 in. It makes may one of the least rainy months of the year.

Wind Speed in May, mph

The average wind speed in May is 8.2 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Bar Harbor in May is 7.6 hours.

Best Time to Visit Bar Harbor
The most sunny months:
October 13 days
September 13 days
November 13 days
The most warm months:
July 73.9 °F
August 73.4 °F
June 67.9 °F
Warmest sea temperature:
August 62.4 °F
July 60.3 °F
September 59.4 °F
The most cold months:
January 26.6 °F
February 27.7 °F
December 33.1 °F
The most rainy months:
October 3 days
March 2 days
December 2 days
The most windy months:
December 11 mph
March 11 mph
February 11 mph

Bar Harbor on the Weather Map

USA Resorts:
NAME
Boston +90
Chicago +76
Hawaii +78
Honolulu +78
Houston +86
Las Vegas +92
Los Angeles +70
Maui +70
Miami +82
Miami Beach +84
New York +94
San Diego +64
San Francisco +60
Sarasota +94
Tampa +92
24 Hours Weather Forecast
Bar Harbor
Local time: 13:01
04 jun, thursday
1500 70°F
NE
12 mph
1800 62°F
NE
9 mph
2100 56°F
NE
7 mph
05 jun, friday
0000 56°F
E
4 mph
0300 56°F
SE
6 mph
0600 60°F
SE
5 mph
0900 70°F
S
5 mph
1200 76°F
N
2 mph