World Resorts USA Mount Desert Island Weather

Mount Desert Island Sea Temperature in September

Average sea water temperature in September:
+58.4°F
Minimum sea water temperature in September: 64.9°F
Maximum sea water temperature in September: 54.9°F

Daily sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 57.2°F. The highest and lowest sea temperatures during the month were 60.8°F and 54.9°F.

Monthly sea water temperature in Mount Desert Island, °F

Which USA resorts have warmest sea in September?

Place name September 2026 September 2025
Key West 87.8°F 86.9°F
Key Largo 87.2°F 86.6°F
Naples 87.0°F 86.1°F
Galveston 87.0°F 85.5°F
Siesta Key 86.9°F 84.9°F
Houston 86.9°F 84.9°F
Corpus Christi 86.8°F 85.8°F
Sarasota 86.8°F 84.8°F
West Palm Beach 86.6°F 86.2°F
Fort Lauderdale 86.6°F 86.4°F
New Orleans 86.4°F 84.3°F
Cape Coral 86.3°F 85.2°F
Orange Beach 86.0°F 84.0°F
Pensacola Beach 85.9°F 83.9°F
Tampa 85.9°F 84.3°F
Clearwater Beach 85.9°F 84.0°F
Miami Beach 85.8°F 86.1°F
Panama City Beach 85.8°F 83.4°F
Fort Walton Beach 85.7°F 83.3°F
Pensacola 85.7°F 83.9°F

Best time for vacation in Mount Desert Island

Sunniest months:
October 13 days
November 13 days
September 12 days
Warmest months:
July 73.0 °F
August 72.4 °F
June 67.2 °F
Warmest sea temp:
August 61.6 °F
July 59.6 °F
September 58.4 °F
Coldest months:
January 28.9 °F
February 30.1 °F
December 34.8 °F
Rainiest months:
December 3 days
October 3 days
March 2 days
Windiest months:
December 10.7 mph
March 10.5 mph
February 10.4 mph

Mount Desert Island on a weather map

Mount Desert Island
+45°F
E 5 mph
Feels like: +43°F
Precip.: 16%
Places in USA:
Name
°F
+54°F
+55°F
+79°F
+75°F
+75°F
+84°F
+72°F
+59°F
+73°F
+61°F
+73°F
+73°F
+75°F
+72°F
+63°F
24 Hours Forecast
Mount Desert Island
Local time: 05:54
October 09, friday
0600
45°F
E
5 mph
0900
54°F
E
8 mph
1200
59°F
E
12 mph
1500
57°F
SE
14 mph
1800
52°F
SE
12 mph
2100
46°F
E
9 mph
October 10, saturday
0000
43°F
E
8 mph
0300
43°F
E
11 mph
Units of measurement: °C / °F