Current sea water temperature:
+41.5°F
| Minimum sea water temperature in December: | 48.6°F |
| Maximum sea water temperature in December: | 41.2°F |
| Average sea water temperature in December: | 44.8°F |
| more information | |
14 days
forecast
forecast
| Bar Harbor |
monthly
weather
weather
| Bar Harbor |
Sea water temperature for the last 10 days:
| December 21 | 41.5°F | December 16 | 43.0°F |
| December 20 | 41.7°F | December 15 | 43.7°F |
| December 19 | 41.7°F | December 14 | 43.9°F |
| December 18 | 43.0°F | December 13 | 44.1°F |
| December 17 | 42.6°F | December 12 | 44.6°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
December
December
| 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: 00:04
December 22, monday
0300
21°F
SE
19 mph
19 mph
0600
18°F
SE
18 mph
18 mph
0900
19°F
SE
17 mph
17 mph
1200
23°F
SE
16 mph
16 mph
1500
25°F
SE
16 mph
16 mph
1800
25°F
SE
15 mph
15 mph
2100
21°F
SE
12 mph
12 mph
December 23, tuesday
0000
19°F
SE
11 mph
11 mph
