Measurements:
°C
°F
Honolulu
72°F
SW 4 mph
Feels like: 72°F
Precip: 100%
World Resorts USA Honolulu Weather

Honolulu Sea Water Temperature

Current Sea Water Temperature:
+79.2°F
Maximum Sea Water Temperature in February: 80.8°F
Minimum Sea Water Temperature in February: 76.4°F
Average water temperature in February: 79.0°F

Sea Water Temperature for the Last 10 Days:

February 21 79.2°F February 16 79.4°F
February 20 79.0°F February 15 79.2°F
February 19 79.2°F February 14 79.6°F
February 18 79.4°F February 13 79.4°F
February 17 79.4°F February 12 79.4°F

When is the Warmest Sea for Honolulu?

According to our data for the last three years for Honolulu the highest average sea water temperature was in September, October and August.

Average Water Temperature by Month, °F

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Honolulu was 84.0°F. The maximum and minimum values were 83.4°F and 85.0°F respectively.

Sea Water Temperature in October

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Honolulu was 84.1°F. The maximum and minimum values were 83.2°F and 84.6°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Honolulu was 84.2°F. The maximum and minimum values were 83.2°F and 84.8°F respectively.

Best Time to Visit Honolulu
The most sunny months:
June 16 days
January 15 days
August 15 days
The most warm months:
August 87.1 °F
September 87.0 °F
July 86.2 °F
Warmest sea temperature:
September 84.3 °F
October 84.2 °F
August 83.7 °F
The most cold months:
February 79.3 °F
March 79.5 °F
January 79.6 °F
The most rainy months:
February 3 days
March 3 days
May 2 days
The most windy months:
July 16 mph
August 15 mph
June 15 mph

Honolulu on the Weather Map

USA Resorts:
NAME
Chicago +28
Hawaii +72
Honolulu +72
Houston +74
Las Vegas +36
Los Angeles +42
Maui +66
Miami +70
Miami Beach +78
New York +34
San Diego +46
San Francisco +42
Sarasota +66
Tampa +70
Washington +36
24 Hours Weather Forecast
Honolulu
Local time: 02:01
21 feb, saturday
0300 72°F
SW
4 mph
0600 70°F
SW
6 mph
0900 74°F
SW
2 mph
1200 78°F
NE
2 mph
1500 78°F
NE
6 mph
1800 76°F
E
4 mph
2100 74°F
S
4 mph
22 feb, sunday
0000 72°F
S
2 mph