Measurements:
°C
°F
Kahului
76°F
SW 1 mph
Feels like: 80°F
Precip: 0%
World Resorts USA Kahului Weather

Kahului Sea Water Temperature

Current Sea Water Temperature:
+80.0°F
Maximum Sea Water Temperature in January: 81.4°F
Minimum Sea Water Temperature in January: 77.4°F
Average water temperature in January: 79.4°F

Sea Water Temperature for the Last 10 Days:

January 08 80.0°F January 03 80.6°F
January 07 80.0°F January 02 80.6°F
January 06 80.2°F January 01 80.4°F
January 05 80.4°F December 31 80.4°F
January 04 80.4°F December 30 80.4°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 +54
Hawaii +78
Honolulu +78
Houston +78
Las Vegas +54
Los Angeles +58
Maui +72
Miami +86
Miami Beach +80
New York +52
San Diego +64
San Francisco +52
Sarasota +82
Tampa +88
Washington +60
24 Hours Weather Forecast
Kahului
Local time: 10:30
08 jan, thursday
1200 78°F
S
2 mph
1500 76°F
S
2 mph
1800 76°F
SE
0 mph
2100 76°F
SW
2 mph
09 jan, friday
0000 74°F
SW
1 mph
0300 72°F
N
1 mph
0600 72°F
SE
1 mph
0900 76°F
S
1 mph