Bar Harbor weather live forecast

Today's maximum temperature in Bar Harbor is expected to be 21°C. Select a day from the live weather forecast for Bar Harbor, Maine, USA for more weather parameters.

Monday
17th Aug
21

18

1

4
Tuesday
18th Aug
23

17

5

6
Wednesday
19th Aug
23

17

5

6
Thursday
20th Aug
25

17

6

5
Friday
21st Aug
25

16

10

6

5-day weather forecast updated at 04:01 on Tuesday 18th August 2026 GMT

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The 5-day weather forecast for Maine (Bar Harbor) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Bar Harbor weather forecast by day

Below are the detailed weather forecasts for Bar Harbor for the next 5 days.

Bar Harbor weather for Monday 17th August 2026

Expect mostly cloudy with light rain in Bar Harbor, Maine with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 41% chance of some rain and a gentle breeze of 15 kph from the south.

21
°C maximum temperature
18
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
4
UV index (Moderate)
41
% chance of some rain
<2
mm of rainfall expected
21
°C wind chill
15
kph wind from S

Bar Harbor weather for Tuesday 18th August 2026

Expect broken clouds in Bar Harbor, Maine with a maximum temperature of 23°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the east.

23
°C maximum temperature
17
°C minimum temperature
broken clouds
5
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
23
°C wind chill
6
kph wind from E

Bar Harbor weather for Wednesday 19th August 2026

Expect broken clouds in Bar Harbor, Maine with a maximum temperature of 23°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-west.

23
°C maximum temperature
17
°C minimum temperature
broken clouds
5
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
23
°C wind chill
9
kph wind from SW

Bar Harbor weather for Thursday 20th August 2026

Expect isolated thunderstorms in Bar Harbor, Maine with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 26% chance of some rain and a light breeze of 7 kph from the south-west.

25
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
5
UV index (Moderate)
26
% chance of some rain
<2
mm of rainfall expected
25
°C wind chill
7
kph wind from SW

Bar Harbor weather for Friday 21st August 2026

Expect isolated thunderstorms in Bar Harbor, Maine with a maximum temperature of 25°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 16% chance of some rain and little or no wind of 6 kph from the south.