Measurements:
°C
°F
Honolulu
78°F
W 20 mph
Feels like: 82°F
Precip: 11%
World Resorts USA Honolulu Weather

Honolulu Sea Water Temperature

Current Sea Water Temperature:
+81.8°F
Maximum Sea Water Temperature in June: 84.6°F
Minimum Sea Water Temperature in June: 79.0°F
Average water temperature in June: 81.9°F

Sea Water Temperature for the Last 10 Days:

June 04 81.8°F May 29 80.8°F
June 03 81.6°F May 28 80.6°F
June 01 81.2°F May 27 80.4°F
May 31 80.8°F May 26 80.4°F
May 30 81.0°F May 25 80.4°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 79.1 °F
March 79.3 °F
January 79.6 °F
The most rainy months:
February 3 days
March 3 days
April 2 days
The most windy months:
July 16 mph
August 15 mph
June 15 mph

Honolulu on the Weather Map

USA Resorts:
NAME
Boston +90
Chicago +76
Hawaii +78
Honolulu +78
Houston +86
Las Vegas +92
Los Angeles +70
Maui +70
Miami +82
Miami Beach +84
New York +94
San Diego +64
San Francisco +60
Sarasota +94
Tampa +92
24 Hours Weather Forecast
Honolulu
Local time: 06:53
04 jun, thursday
0900 78°F
W
19 mph
1200 80°F
W
19 mph
1500 80°F
SW
19 mph
1800 78°F
SW
21 mph
2100 78°F
W
24 mph
05 jun, friday
0000 78°F
W
23 mph
0300 78°F
W
21 mph
0600 78°F
W
22 mph