World Resorts USA Bar Harbor Weather

Bar Harbor sea water temperature

Current sea water temperature:
+37.2°F
Minimum sea water temperature in January: 43.0°F
Maximum sea water temperature in January: 36.1°F
Average sea water temperature in January: 39.8°F

Sea water temperature for the last 10 days:

January 12 37.2°F January 7 38.3°F
January 11 37.2°F January 6 38.3°F
January 10 36.5°F January 5 38.1°F
January 9 37.8°F January 4 38.7°F
January 8 38.5°F January 3 39.2°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.

Best time for vacation in Bar Harbor

Sunniest months:
September 13 days
November 13 days
October 13 days
Warmest months:
July 71.5 °F
August 71.1 °F
June 66.1 °F
Warmest sea temp:
August 61.2 °F
July 59.3 °F
September 58.4 °F
Coldest months:
January 29.4 °F
February 29.8 °F
December 34.8 °F
Rainiest months:
April 3 days
October 3 days
March 2 days
Windiest months:
December 11.0 mph
February 10.9 mph
March 10.7 mph

Bar Harbor on a weather map

Bar Harbor
+27°F
E 19 mph
Feels like: +14°F
Precip.: 0%
Places in USA:
Name
°F
+41°F
+73°F
+73°F
+45°F
+55°F
+72°F
+75°F
+66°F
+37°F
+57°F
+46°F
+64°F
+61°F
+57°F
+34°F
24 Hours Forecast
Bar Harbor
Local time: 11:54
January 12, monday
1200
27°F
E
19 mph
1500
32°F
E
17 mph
1800
30°F
E
14 mph
2100
30°F
E
12 mph
January 13, tuesday
0000
30°F
E
11 mph
0300
30°F
E
8 mph
0600
30°F
E
7 mph
0900
34°F
NE
6 mph
Units of measurement: °C / °F