Measurements:
°C
°F
Kahului
76°F
W 11 mph
Feels like: 80°F
Precip: 0%
World Resorts USA Kahului Weather

Kahului Sea Water Temperature

Current Sea Water Temperature:
+81.8°F
Maximum Sea Water Temperature in December: 83.2°F
Minimum Sea Water Temperature in December: 77.4°F
Average water temperature in December: 80.5°F

Sea Water Temperature for the Last 10 Days:

December 04 81.8°F November 29 82.0°F
December 03 82.0°F November 28 82.0°F
December 02 82.0°F November 27 82.0°F
December 01 82.0°F November 26 82.0°F
November 30 81.8°F November 25 82.0°F

When is the Warmest Sea for Kahului?

According to our data for the last three years for Kahului 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 Kahului was 83.6°F. The maximum and minimum values were 83.0°F and 84.2°F respectively.

Sea Water Temperature in October

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Kahului was 83.5°F. The maximum and minimum values were 82.6°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 Kahului was 83.2°F. The maximum and minimum values were 82.6°F and 83.8°F respectively.

Best Time to Visit Kahului
The most sunny months:
January 19 days
June 19 days
July 19 days
The most warm months:
September 86.2 °F
August 86.1 °F
July 85.6 °F
Warmest sea temperature:
September 83.5 °F
October 83.5 °F
August 82.9 °F
The most cold months:
February 79.0 °F
January 79.3 °F
March 79.4 °F
The most rainy months:
March 2 days
August 1 day
January 1 day
The most windy months:
July 12 mph
June 12 mph
November 12 mph

Kahului on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +78
Honolulu +78
Houston +46
Las Vegas +44
Los Angeles +56
Maui +72
Miami +72
Miami Beach +80
New York +20
San Diego +58
San Francisco +48
Sarasota +64
Tampa +64
Washington +28
24 Hours Weather Forecast
Kahului
Local time: 19:59
04 dec, thursday
2100 76°F
W
11 mph
05 dec, friday
0000 76°F
W
13 mph
0300 76°F
W
13 mph
0600 74°F
W
9 mph
0900 78°F
W
11 mph
1200 80°F
W
12 mph
1500 78°F
W
11 mph
1800 76°F
W
12 mph