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

Hawaii Sea Water Temperature

Current Sea Water Temperature:
+81.8°F
Maximum Sea Water Temperature in June: 83.8°F
Minimum Sea Water Temperature in June: 79.0°F
Average water temperature in June: 81.7°F

Sea Water Temperature for the Last 10 Days:

June 04 81.8°F May 29 81.0°F
June 03 81.6°F May 28 80.8°F
June 01 81.2°F May 27 80.6°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 Hawaii?

According to our data for the last three years for Hawaii 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 Hawaii was 83.9°F. The maximum and minimum values were 83.4°F and 84.6°F respectively.

Sea Water Temperature in October

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Hawaii was 84.0°F. The maximum and minimum values were 83.0°F and 84.4°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Hawaii was 84.0°F. The maximum and minimum values were 83.0°F and 84.8°F respectively.

Best Time to Visit Hawaii
The most sunny months:
January 15 days
August 15 days
June 14 days
The most warm months:
August 86.9 °F
September 86.6 °F
July 85.9 °F
Warmest sea temperature:
September 84.2 °F
October 84.0 °F
August 83.6 °F
The most cold months:
February 78.9 °F
March 79.1 °F
January 79.4 °F
The most rainy months:
March 3 days
February 3 days
October 2 days
The most windy months:
July 17 mph
August 16 mph
June 16 mph

Hawaii 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
Hawaii
Local time: 06:54
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

Looking for the Best Resort?