World Resorts USA Hawaii Weather

Hawaii Sea Temperature in September

Average sea water temperature in September:
+80.7°F
Minimum sea water temperature in September: 84.2°F
Maximum sea water temperature in September: 77.7°F

Daily sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 80.8°F. The highest and lowest sea temperatures during the month were 81.1°F and 80.4°F.

Monthly sea water temperature in Hawaii, °F

Which USA resorts have warmest sea in September?

Place name September 2026 September 2025
Key West 88.7°F 86.9°F
Naples 88.0°F 86.1°F
Sarasota 87.9°F 84.8°F
Siesta Key 87.9°F 84.9°F
Corpus Christi 87.4°F 85.8°F
Houston 87.4°F 84.9°F
Tampa 87.2°F 84.3°F
Clearwater Beach 87.1°F 84.0°F
New Orleans 86.8°F 84.3°F
West Palm Beach 86.8°F 86.2°F
Fort Lauderdale 86.6°F 86.4°F
Miami Beach 86.5°F 86.1°F
Panama City Beach 86.4°F 83.4°F
Pensacola Beach 86.3°F 83.9°F
Pensacola 86.3°F 83.9°F
Fort Walton Beach 86.3°F 83.3°F
Orange Beach 86.3°F 84.0°F
Destin 86.3°F 83.1°F
Santa Rosa Beach 86.2°F 83.4°F
Miami 85.9°F 85.8°F

Best time for vacation in Hawaii

Sunniest months:
January 15 days
August 14 days
June 14 days
Warmest months:
August 83.0 °F
September 82.9 °F
July 82.2 °F
Warmest sea temp:
September 80.7 °F
October 80.6 °F
August 80.2 °F
Coldest months:
February 76.0 °F
March 76.2 °F
January 76.5 °F
Rainiest months:
March 3 days
February 3 days
October 2 days
Windiest months:
July 17.1 mph
August 16.0 mph
June 15.6 mph

Hawaii on a weather map

Hawaii
+79°F
SW 22 mph
Feels like: +84°F
Precip.: 27%
Places in USA:
Name
°F
+64°F
+70°F
+79°F
+82°F
+70°F
+82°F
+66°F
+72°F
+70°F
+61°F
+66°F
+75°F
+82°F
+66°F
24 Hours Forecast
Hawaii
Local time: 21:08
September 17, thursday
0000
79°F
SW
21 mph
0300
79°F
SW
19 mph
0600
77°F
SW
19 mph
0900
79°F
SW
20 mph
1200
79°F
SW
24 mph
1500
79°F
SW
24 mph
1800
79°F
SW
21 mph
2100
79°F
SW
21 mph

Best place for vacation:

Units of measurement: °C / °F