World Resorts USA Honolulu Weather

Honolulu Sea Temperature in September

Average sea water temperature in September:
+80.9°F
Minimum sea water temperature in September: 84.4°F
Maximum sea water temperature in September: 77.7°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 80.6°F. The highest and lowest sea temperatures during the month were 81.5°F and 80.1°F.

Monthly sea water temperature in Honolulu, °F

Which USA resorts have warmest sea in September?

Place name September 2025 September 2024
Key West 86.9°F 87.4°F
Key Largo 86.6°F 87.1°F
Fort Lauderdale 86.4°F 86.4°F
Everglades 86.2°F 87.0°F
West Palm Beach 86.2°F 86.4°F
Miami Beach 86.1°F 86.3°F
Naples 86.1°F 87.2°F
South Padre Island 86.0°F 85.8°F
Corpus Christi 85.8°F 84.7°F
Miami 85.8°F 86.0°F
Sanibel Island 85.7°F 87.0°F
Galveston 85.5°F 83.7°F
Houston 84.9°F 83.4°F
Siesta Key 84.9°F 86.8°F
Sarasota 84.8°F 86.7°F
Cocoa Beach 84.6°F 85.2°F
Tampa 84.3°F 86.0°F
New Orleans 84.3°F 82.9°F
St. Petersburg 84.1°F 86.1°F
Orange Beach 84.0°F 84.1°F

Best time for vacation in Honolulu

Sunniest months:
June 16 days
January 15 days
August 15 days
Warmest months:
August 83.4 °F
September 83.3 °F
July 82.6 °F
Warmest sea temp:
September 80.9 °F
October 80.8 °F
August 80.4 °F
Coldest months:
February 76.4 °F
March 76.5 °F
January 76.6 °F
Rainiest months:
February 3 days
March 3 days
May 2 days
Windiest months:
July 16.4 mph
August 15.4 mph
June 15.0 mph

Honolulu on a weather map

Honolulu
+68°F
SW 16 mph
Feels like: +68°F
Precip.: 69%
Places in USA:
Name
°F
+34°F
+68°F
+68°F
+57°F
+59°F
+61°F
+63°F
+63°F
+28°F
+59°F
+55°F
+48°F
+46°F
+59°F
+32°F
24 Hours Forecast
Honolulu
Local time: 21:24
February 25, wednesday
0000
68°F
SW
19 mph
0300
68°F
SW
19 mph
0600
68°F
SW
20 mph
0900
68°F
SW
19 mph
1200
70°F
SW
18 mph
1500
70°F
SW
19 mph
1800
68°F
SW
19 mph
2100
68°F
SW
15 mph
Units of measurement: °C / °F