Current sea water temperature:
+40.3°F
| Minimum sea water temperature in December: | 48.6°F |
| Maximum sea water temperature in December: | 40.1°F |
| Average sea water temperature in December: | 44.6°F |
| more information | |
14 days
forecast
forecast
| Bar Harbor |
monthly
weather
weather
| Bar Harbor |
Sea water temperature for the last 10 days:
| December 29 | 40.3°F | December 24 | 41.4°F |
| December 28 | 40.1°F | December 23 | 41.4°F |
| December 27 | 40.8°F | December 22 | 41.4°F |
| December 26 | 41.5°F | December 21 | 41.5°F |
| December 25 | 41.5°F | December 20 | 41.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Bar Harbor?
Based on the data about daily sea water temperature for the last three years the warmest sea in Bar Harbor was noticed in August, July and September.
Monthly Sea Temperatures in Bar Harbor, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 59.7°F. The highest and lowest sea temperatures during the month were 62.6°F and 56.8°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 57.4°F. The highest and lowest sea temperatures during the month were 60.1°F and 54.5°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 58.5°F. The highest and lowest sea temperatures during the month were 61.2°F and 56.7°F.
current
weather
weather
| Bar Harbor |
weather in
January
January
| Bar Harbor |
Best time for vacation in Bar Harbor
Bar Harbor on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Bar Harbor
Local time: 11:59
December 29, monday
1200
37°F
NW
17 mph
17 mph
1500
41°F
NW
16 mph
16 mph
1800
43°F
N
11 mph
11 mph
2100
45°F
N
14 mph
14 mph
December 30, tuesday
0000
41°F
NE
18 mph
18 mph
0300
36°F
E
22 mph
22 mph
0600
32°F
NE
18 mph
18 mph
0900
28°F
E
16 mph
16 mph
