Measurements:
°C
°F
Kahului
76°F
W 7 mph
Feels like: 80°F
Precip: 0%
World Resorts USA Kahului Weather

Kahului Sea Water Temperature

Current Sea Water Temperature:
+80.2°F
Maximum Sea Water Temperature in April: 81.0°F
Minimum Sea Water Temperature in April: 76.6°F
Average water temperature in April: 79.0°F

Sea Water Temperature for the Last 10 Days:

April 23 80.2°F April 18 79.6°F
April 22 80.0°F April 17 79.4°F
April 21 79.4°F April 16 79.6°F
April 20 79.2°F April 15 79.4°F
April 19 79.4°F April 14 79.2°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 78.8 °F
January 79.2 °F
March 79.3 °F
The most rainy months:
March 2 days
February 2 days
August 1 day
The most windy months:
July 12 mph
June 12 mph
November 12 mph

Kahului on the Weather Map

USA Resorts:
NAME
Chicago +70
Hawaii +76
Honolulu +76
Houston +82
Las Vegas +68
Los Angeles +64
Maui +70
Miami +82
Miami Beach +82
New York +76
San Diego +66
San Francisco +58
Sarasota +88
Tampa +86
Washington +82
24 Hours Weather Forecast
Kahului
Local time: 06:10
23 apr, thursday
0900 80°F
SW
7 mph
1200 80°F
SW
6 mph
1500 80°F
SW
6 mph
1800 78°F
SW
11 mph
2100 76°F
SW
12 mph
24 apr, friday
0000 76°F
SW
11 mph
0300 74°F
SW
11 mph
0600 74°F
SW
12 mph