Bar Harbor weather by month

Check out Bar Harbor weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & UV index

Temperature in Bar Harbor (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	-2	-1	5	11	18	23	26	25	20	15	8	1
Min temperature (night-time)	-13	-12	-5	1	6	11	14	14	9	4	-1	-9
Heat & Humidity	0	0	0	0	0	0	L	L	0	0	0	0
Sea temperature	5	3	3	4	6	9	12	13	12	11	9	7

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Bar Harbor

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	4	5	5	6	7	8	8	7	6	5	4	3
Daily hours of daylight	9	10	12	14	15	15	15	14	12	11	10	9
UV Index (Maximum)	1	2	3	5	6	8	8	7	5	3	2	1

Rainfall in Bar Harbor

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	12	10	12	12	12	12	11	11	10	11	13	14
Average monthly rainfall (mm)	117	100	106	108	106	89	85	74	112	115	153	141

More about Bar Harbor

Bar Harbor by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Maine (Bar Harbor) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Bar Harbor?

Bar Harbor has a cold climate with warm summers and some rainfall in all months.

Bar Harbor weather in January

Expect daytime maximum temperatures of -2°C in Bar Harbor, Maine in January based on long-term weather averages. There are 4 hours of sunshine per day on average with 12 days with some rainfall and typically 117 mm of rainfall in the month, which might fall as snow.

-2
-2°C max day temperature
4
4 hours of sunshine per day
12
12 days with some rainfall
-13
-13°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
117
117 mm of monthly rainfall
1
1 (Low) UV index
5
5°C sea temperature

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Bar Harbor weather in February

Expect daytime maximum temperatures of -1°C in Bar Harbor, Maine in February based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 100 mm of rainfall in the month, which might fall as snow.

-1
-1°C max day temperature
5
5 hours of sunshine per day
10
10 days with some rainfall
-12
-12°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
100
100 mm of monthly rainfall
2
2 (Low) UV index
3
3°C sea temperature

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Bar Harbor weather in March

Expect daytime maximum temperatures of 5°C in Bar Harbor, Maine in March based on long-term weather averages. There are 5 hours of sunshine per day on average with 12 days with some rainfall and typically 106 mm of rainfall in the month, which might fall as snow.

5
5°C max day temperature
5
5 hours of sunshine per day
12
12 days with some rainfall
-5
-5°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
106
106 mm of monthly rainfall
3
3 (Moderate) UV index
3
3°C sea temperature

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Bar Harbor weather in April

Expect daytime maximum temperatures of 11°C in Bar Harbor, Maine in April based on long-term weather averages. There are 6 hours of sunshine per day on average with 12 days with some rainfall and typically 108 mm of rainfall in the month.

11
11°C max day temperature
6
6 hours of sunshine per day
12
12 days with some rainfall
1
1°C min night temperature
14
14 hours of daylight per day
0
No heat & humidity
108
108 mm of monthly rainfall
5
5 (Moderate) UV index
4
4°C sea temperature

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Bar Harbor weather in May

Expect daytime maximum temperatures of 18°C in Bar Harbor, Maine in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 106 mm of rainfall in the month.

18
18°C max day temperature
7
7 hours of sunshine per day
12
12 days with some rainfall
6
6°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
106
106 mm of monthly rainfall
6
6 (High) UV index
6
6°C sea temperature

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Bar Harbor weather in June

Expect daytime maximum temperatures of 23°C in Bar Harbor, Maine in June based on long-term weather averages. There are 8 hours of sunshine per day on average with 12 days with some rainfall and typically 89 mm of rainfall in the month.

23
23°C max day temperature
8
8 hours of sunshine per day
12
12 days with some rainfall
11
11°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
89
89 mm of monthly rainfall
8
8 (Very High) UV index
9
9°C sea temperature

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Bar Harbor weather in July

Expect daytime maximum temperatures of 26°C in Bar Harbor, Maine in July based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 85 mm of rainfall in the month.

26
26°C max day temperature
8
8 hours of sunshine per day
11
11 days with some rainfall
14
14°C min night temperature
15
15 hours of daylight per day
L
Low heat & humidity
85
85 mm of monthly rainfall
8
8 (Very High) UV index
12
12°C sea temperature

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Bar Harbor weather in August

Expect daytime maximum temperatures of 25°C in Bar Harbor, Maine in August based on long-term weather averages. There are 7 hours of sunshine per day on average with 11 days with some rainfall and typically 74 mm of rainfall in the month.

25
25°C max day temperature
7
7 hours of sunshine per day
11
11 days with some rainfall
14
14°C min night temperature
14
14 hours of daylight per day
L
Low heat & humidity
74
74 mm of monthly rainfall
7
7 (High) UV index
13
13°C sea temperature

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Bar Harbor weather in September

Expect daytime maximum temperatures of 20°C in Bar Harbor, Maine in September based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 112 mm of rainfall in the month.

20
20°C max day temperature
6
6 hours of sunshine per day
10
10 days with some rainfall
9
9°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
112
112 mm of monthly rainfall
5
5 (Moderate) UV index
12
12°C sea temperature

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Bar Harbor weather in October

Expect daytime maximum temperatures of 15°C in Bar Harbor, Maine in October based on long-term weather averages. There are 5 hours of sunshine per day on average with 11 days with some rainfall and typically 115 mm of rainfall in the month.

15
15°C max day temperature
5
5 hours of sunshine per day
11
11 days with some rainfall
4
4°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
115
115 mm of monthly rainfall
3
3 (Moderate) UV index
11
11°C sea temperature

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Bar Harbor weather in November

Expect daytime maximum temperatures of 8°C in Bar Harbor, Maine in November based on long-term weather averages. There are 4 hours of sunshine per day on average with 13 days with some rainfall and typically 153 mm of rainfall in the month.

8
8°C max day temperature
4
4 hours of sunshine per day
13
13 days with some rainfall
-1
-1°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
153
153 mm of monthly rainfall
2
2 (Low) UV index
9
9°C sea temperature

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Bar Harbor weather in December

Expect daytime maximum temperatures of 1°C in Bar Harbor, Maine in December based on long-term weather averages. There are 3 hours of sunshine per day on average with 14 days with some rainfall and typically 141 mm of rainfall in the month, which might fall as snow.