World Resorts

USA

Bar Harbor Weather

Bar Harbor 14 Days Forecast

17.09
thu

Day

66°F

NW 6 mph

Precip.
15%

Night

59°F

NE 3 mph

Precip.
57%

18.09
fri

Day

72°F

SE 15 mph

Precip.
3%

Night

50°F

SE 14 mph

Precip.
4%

19.09
sat

Day

59°F

SE 9 mph

Precip.
1%

Night

46°F

NE 4 mph

Precip.
19%

20.09
sun

Day

50°F

N 9 mph

Precip.
74%

Night

48°F

SW 9 mph

Precip.
59%

21.09
mon

Day

59°F

S 14 mph

Precip.
7%

Night

45°F

S 6 mph

Precip.
14%

22.09
tue

Day

55°F

SW 6 mph

Precip.
11%

Night

46°F

SW 5 mph

Precip.
21%

23.09
wed

Day

55°F

NW 9 mph

Precip.
15%

Night

54°F

NW 7 mph

Precip.
30%

24.09
thu

Day

57°F

NW 11 mph

Precip.
50%

Night

59°F

NW 16 mph

Precip.
78%

25.09
fri

Day

63°F

NE 7 mph

Precip.
46%

Night

52°F

E 6 mph

Precip.
24%

26.09
sat

Day

54°F

SE 13 mph

Precip.
5%

Night

43°F

E 7 mph

Precip.
9%

27.09
sun

Day

59°F

SE 11 mph

Precip.
1%

Night

50°F

E 5 mph

Precip.
9%

28.09
mon

Day

68°F

NE 11 mph

Precip.
2%

Night

59°F

E 6 mph

Precip.
22%

29.09
tue

Day

73°F

E 7 mph

Precip.
5%

Night

59°F

SE 5 mph

Precip.
9%

30.09
wed

Day

68°F

E 6 mph

Precip.
15%

Night

55°F

S 9 mph

Precip.
20%

sea water
temperature

Bar Harbor

monthly
weather

Bar Harbor

current
weather

Bar Harbor

7 days
forecast

Bar Harbor

January
February
March
April

May
June
July
August

September
October
November
December

Show year:

2026

2025

2024

The average sea water temperature in September of 2026 was 57.9°F. The highest and lowest sea temperatures during the month were 60.4°F and 55.6°F.

Show year:

2025

2024

2023

The average sea water temperature in October of 2025 was 54.9°F. The highest and lowest sea temperatures during the month were 58.1°F and 53.1°F.