Temperature
Cold by day, freezing at night.
37°Ftypical December high
Typical range
December climate
December in Bar Harbor
United States · North America
Not the best time: Cold weather is the main limitation.
Not an ideal month
Daytime high
37°F
Lows around 25°F
Rain
Several rainy days
Sun
5.5 h/day
Air feel
Very dry
Sea temp
45°F
Too cold for swimming
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days. About 12 wet days, the highest monthly average.
37%wet-day frequency
AmountWet-day chance
Sunshine
A mix of sunshine and cloud.
5.5 hDecember sunshine
Heat & humidity by month
Humidity is rarely noticeable in the cool air.
Very dryDecember Heat feel
Easy airWarm airHumid air
Hourly temperature pattern
In December, afternoons feel about 23° and nights feel near 18°.
FrigidFreezingVery coldColdCoolComfortableNight hours
Clear sky
Mostly cloudy skies this month.
39%December Clear sky
Clear skyCloud
Wind pattern
Breezy December days can feel brisker in open spots.
11 mphDecember Breezy
Sea temperature
45°FDecember sea temp
More detailIncludes daypart comfort
Typical December day
December late afternoons are around 32°F, and early evening stays near 31°F.
Avg temp Typical range
Morning30°F
Rain18%
Cloud62%
Humid airLow
Sun intensityLow
Midday33°F
Rain19%
Cloud62%
Humid airLow
Sun intensityLow
Late afternoon33°F
Rain18%
Cloud61%
Humid airLow
Sun intensityMinimal
Best windowEarly evening31°F
Rain20%
Cloud59%
Humid airLow
Sun intensityMinimal
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 31 | 17 | 3.8 | 11 | 6.1 | 75 | 40 |
| Feb | 33 | 19 | 3.3 | 10 | 7.2 | 73 | 38 |
| Mar | 39 | 27 | 4.0 | 11 | 8.1 | 72 | 37 |
| Apr | 49 | 37 | 3.8 | 11 | 8.9 | 72 | 40 |
| May | 59 | 47 | 3.2 | 10 | 9.7 | 76 | 45 |
| Jun | 67 | 55 | 3.5 | 10 | 10.3 | 79 | 52 |
| Jul | 73 | 61 | 2.9 | 10 | 11.1 | 81 | 59 |
| Aug | 73 | 61 | 3.0 | 8 | 10.5 | 81 | 62 |
| Sep | 67 | 56 | 3.9 | 8 | 9.0 | 81 | 59 |
| Oct | 56 | 46 | 4.6 | 10 | 7.4 | 79 | 54 |
| Nov | 46 | 36 | 4.0 | 10 | 6.2 | 76 | 49 |
| Dec | 37 | 25 | 4.9 | 12 | 5.5 | 77 | 45 |
Similar climates
Similar
Similar travel styleCannon BeachUnited StatesSimilar travel styleAnticosti IslandCanadaSimilar travel styleNassauBahamasSimilar travel styleArchipelago SeaFinland
Want a side-by-side climate view? Compare Bar Harbor with Cannon Beach.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 27, 2026
Data & methodology