Measurements:
°C
°F
Kahului
78°F
W 6 mph
Feels like: 82°F
Precip: 23%
World Resorts USA Kahului Weather

Kahului Sea Water Temperature

Current Sea Water Temperature:
+83.2°F
Maximum Sea Water Temperature in October: 85.8°F
Minimum Sea Water Temperature in October: 80.4°F
Average water temperature in October: 83.5°F

Sea Water Temperature for the Last 10 Days:

October 26 83.2°F October 21 83.6°F
October 25 83.2°F October 20 83.4°F
October 24 82.8°F October 19 83.8°F
October 23 83.2°F October 18 84.0°F
October 22 83.4°F October 17 84.0°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: 2026 2025 2024

The average sea surface temperature in September 2026 for Kahului was 83.8°F. The maximum and minimum values were 83.0°F and 84.6°F respectively.

Sea Water Temperature in October

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Kahului was 83.6°F. The maximum and minimum values were 82.8°F and 84.4°F respectively.

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Kahului was 83.3°F. The maximum and minimum values were 82.4°F and 84.0°F respectively.

Best Time to Visit Kahului
The most sunny months:
January 19 days
June 18 days
September 18 days
The most warm months:
September 85.9 °F
August 85.8 °F
July 85.4 °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
F°
Boston +58
Chicago +58
Hawaii +80
Houston +74
Las Vegas +64
Los Angeles +74
Maui +72
Miami +82
New York +62
Panama City Beach +64
San Diego +74
San Francisco +60
Santa Monica +72
Tampa +72
Washington +58
24 Hours Weather Forecast
Kahului
Local time: 18:45
26 oct, monday
2100 78°F
W
8 mph
27 oct, tuesday
0000 78°F
W
7 mph
0300 78°F
W
6 mph
0600 78°F
W
7 mph
0900 78°F
W
9 mph
1200 78°F
SW
9 mph
1500 78°F
W
7 mph
1800 76°F
W
7 mph