Bar Harbor, ME Climate & Monthly Averages
The climate of Bar Harbor
Located in Maine, United States, Bar Harbor experiences a humid continental climate with warm summers and cold, often snowy winters. Afternoon temperatures peak near 74°F (23°C) in July and dip to about 33°F (0°C) in January, with around 50.2 inches (1274 mm) of precipitation falling across the year.
Climate quick facts
- Hottest month: July - highs near 74°F (23°C)
- Coldest month: January - highs near 33°F (0°C)
- Record high: 94°F (35°C) · Record low: -17°F (-27°C) (2015–2024)
- Wettest month: December (12 rainy days) · Sunniest: July (10.8 h sun/day)
- Climate type: humid continental - warm summers and cold, often snowy winters
- Snow: about 24 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 74°F (23°C) and overnight lows stay near 62°F (16°C). The coolest month is January, with typical highs of 33°F (0°C) and lows around 19°F (-7°C). Based on 2015–2024 weather data, temperatures have reached as high as 94°F (35°C) and dropped as low as -17°F (-27°C).
Rain, sun and snow
December is usually the wettest month. It brings about 5.3 inches (136 mm) of rain over 12 days, while May is the driest. July brings the most sunshine, averaging 10.8 hours of sun a day. Snow falls on about 24 days in a typical year, mostly from November through April.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 33° | 19° | 11 | 4.8 in | 5.7 h/day | 73% |
| February | 33° | 19° | 11 | 3.8 in | 6.6 h/day | 72% |
| March | 39° | 26° | 11 | 4.3 in | 7.6 h/day | 71% |
| April | 48° | 36° | 12 | 4.4 in | 8.3 h/day | 73% |
| May | 59° | 46° | 10 | 3.2 in | 10.0 h/day | 75% |
| June | 67° | 55° | 10 | 3.8 in | 10.4 h/day | 80% |
| July | 74° | 62° | 10 | 3.4 in | 10.8 h/day | 82% |
| August | 73° | 62° | 9 | 4.1 in | 10.3 h/day | 82% |
| September | 68° | 57° | 8 | 4.2 in | 9.1 h/day | 81% |
| October | 58° | 47° | 10 | 4.7 in | 7.3 h/day | 79% |
| November | 46° | 36° | 10 | 4.2 in | 6.2 h/day | 74% |
| December | 38° | 26° | 12 | 5.3 in | 5.3 h/day | 74% |
Bar Harbor month by month
Bar Harbor weather in January
January brings highs around 33°F (0°C), lows near 19°F (-7°C), about 11 wet days and roughly 6 snowy days - typically the coldest month of the year in Bar Harbor.
Bar Harbor weather in February
February brings highs around 33°F (1°C), lows near 19°F (-7°C), about 11 wet days and roughly 6 snowy days.
Bar Harbor weather in March
March brings highs around 39°F (4°C), lows near 26°F (-3°C), about 11 wet days and roughly 4 snowy days.
Bar Harbor weather in April
April brings highs around 48°F (9°C), lows near 36°F (2°C), about 12 wet days and roughly 2 snowy days.
Bar Harbor weather in May
May brings highs around 59°F (15°C), lows near 46°F (8°C), about 10 wet days - typically the driest month of the year in Bar Harbor.
Bar Harbor weather in June
June brings highs around 67°F (20°C), lows near 55°F (13°C), about 10 wet days.
Bar Harbor weather in July
July brings highs around 74°F (23°C), lows near 62°F (16°C), about 10 wet days - typically the hottest month and the sunniest month of the year in Bar Harbor.
Bar Harbor weather in August
August brings highs around 73°F (23°C), lows near 62°F (17°C), about 9 wet days.
Bar Harbor weather in September
September brings highs around 68°F (20°C), lows near 57°F (14°C), about 8 wet days.
Bar Harbor weather in October
October brings highs around 58°F (14°C), lows near 47°F (8°C), about 10 wet days.
Bar Harbor weather in November
November brings highs around 46°F (8°C), lows near 36°F (2°C), about 10 wet days and roughly 1 snowy days.
Bar Harbor weather in December
December brings highs around 38°F (3°C), lows near 26°F (-3°C), about 12 wet days and roughly 4 snowy days - typically the wettest month of the year in Bar Harbor.
Seasons in Bar Harbor
Spring (March through May)
Spring in Bar Harbor is chilly, with daytime highs averaging 49°F (9°C) and nights around 36°F (2°C); expect showers on roughly 33 days across the season, plus around 7 snowy days.
Summer (June through August)
Summer in Bar Harbor brings comfortable warmth, with daytime highs averaging 71°F (22°C) and nights around 60°F (15°C); expect showers on roughly 30 days across the season.
Fall (September through November)
Fall in Bar Harbor stays on the cool side of mild, with daytime highs averaging 57°F (14°C) and nights around 47°F (8°C); expect showers on roughly 29 days across the season.
Winter (December through February)
Winter in Bar Harbor is frigid, with daytime highs averaging 35°F (1°C) and nights around 22°F (-6°C); expect showers on roughly 34 days across the season, plus around 17 snowy days. Wind makes those temperatures feel harsher than they sound - pair the forecast winds with the wind speed converter to judge conditions on exposed skin.
Climate questions, answered
What is the average temperature in Bar Harbor?
Is Bar Harbor hot in summer?
Is Bar Harbor cold in winter?
How many rainy days does Bar Harbor get in a year?
Best time to visit Bar Harbor
The best time to visit Bar Harbor is generally June to September, when this window offers the warmest, brightest days of the year. Daytime temperatures in that window typically sit near 70°F (21°C).
Pack for Bar Harbor with a heavy insulated coat, hat and gloves for winter; a compact umbrella or rain shell - showers are a regular feature. Evenings can feel noticeably cooler than afternoons - July nights average 62°F (16°C).
Bar Harbor temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.