Average sea water temperature in September:
+62.6°F
| Minimum sea water temperature in September: | 69.4°F |
| Maximum sea water temperature in September: | 52.2°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 64.2°F. The highest and lowest sea temperatures during the month were 67.8°F and 60.4°F.
Monthly sea water temperature in Duluth, °F
Which USA resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Key West | 88.5°F | 86.9°F |
| Naples | 87.8°F | 86.1°F |
| Key Largo | 87.8°F | 86.6°F |
| Siesta Key | 87.7°F | 84.9°F |
| Sarasota | 87.7°F | 84.8°F |
| Cape Coral | 87.5°F | 85.2°F |
| Houston | 87.3°F | 84.9°F |
| Corpus Christi | 87.2°F | 85.8°F |
| Tampa | 87.1°F | 84.3°F |
| St. Petersburg | 87.0°F | 84.1°F |
| Clearwater Beach | 87.0°F | 84.0°F |
| West Palm Beach | 86.8°F | 86.2°F |
| New Orleans | 86.8°F | 84.3°F |
| Fort Lauderdale | 86.7°F | 86.4°F |
| Miami Beach | 86.5°F | 86.1°F |
| Orange Beach | 86.3°F | 84.0°F |
| Pensacola Beach | 86.3°F | 83.9°F |
| Panama City Beach | 86.3°F | 83.4°F |
| Pensacola | 86.3°F | 83.9°F |
| Fort Walton Beach | 86.2°F | 83.3°F |
Best time for vacation in Duluth
Duluth on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Duluth
Local time: 06:00
September 19, saturday
0900
55°F
SW
11 mph
11 mph
1200
57°F
SW
14 mph
14 mph
1500
57°F
SW
15 mph
15 mph
1800
57°F
SW
13 mph
13 mph
2100
55°F
SW
8 mph
8 mph
September 20, sunday
0000
54°F
SW
8 mph
8 mph
0300
54°F
SW
8 mph
8 mph
0600
54°F
SW
10 mph
10 mph
