Current Sea Water Temperature:
+42.2°F
| Maximum Sea Water Temperature in December: | 48.4°F |
| Minimum Sea Water Temperature in December: | 40.2°F |
| Average water temperature in December: | 44.3°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| December 16 | 42.2°F | December 11 | 44.2°F |
| December 15 | 43.0°F | December 10 | 44.4°F |
| December 14 | 43.2°F | December 09 | 44.8°F |
| December 13 | 43.4°F | December 08 | 44.8°F |
| December 12 | 44.0°F | December 07 | 45.2°F |
When is the Warmest Sea for Bar Harbor?
According to our data for the last three years for Bar Harbor the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Bar Harbor was 60.8°F. The maximum and minimum values were 57.6°F and 64.0°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Bar Harbor was 58.2°F. The maximum and minimum values were 55.0°F and 61.2°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Bar Harbor was 59.4°F. The maximum and minimum values were 57.4°F and 62.4°F respectively.
USA Resorts:
NAME
F°
| Chicago |  |
+30 |
| Hawaii |  |
+80 |
| Honolulu | |
+80 |
| Houston | |
+58 |
| Las Vegas | |
+72 |
| Los Angeles | |
+72 |
| Maui | |
+74 |
| Miami | |
+76 |
| Miami Beach | |
+80 |
| New York | |
+36 |
| San Diego | |
+68 |
| San Francisco |  |
+52 |
| Sarasota | |
+76 |
| Tampa | |
+78 |
| Washington | |
+48 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Bar Harbor
Local time: 14:12
16 dec, tuesday
| 1500 |  |
30°F | NE 9 mph |
| 1800 |  |
28°F | E 6 mph |
| 2100 |  |
30°F | NE 9 mph |
17 dec, wednesday
| 0000 |  |
32°F | NE 17 mph |
| 0300 | |
34°F | NE 19 mph |
| 0600 | |
34°F | NE 21 mph |
| 0900 |  |
36°F | NE 22 mph |
| 1200 |  |
38°F | NE 24 mph |