Measurements:
°C
°F
Kahului
80°F
W 13 mph
Feels like: 84°F
Precip: 19%
World Resorts USA Kahului Weather

Kahului Sea Water Temperature

Current Sea Water Temperature:
+83.4°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 05 83.4°F September 30 83.4°F
October 04 83.0°F September 29 83.2°F
October 03 83.0°F September 28 83.0°F
October 02 83.2°F September 27 83.4°F
October 01 82.8°F September 26 83.8°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: 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: 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 +52
Chicago +58
Hawaii +80
Houston +80
Las Vegas +82
Los Angeles +96
Maui +72
Miami +86
Myrtle Beach +68
New York +56
San Diego +86
San Francisco +66
Santa Monica +88
Sarasota +82
Washington +58
24 Hours Weather Forecast
Kahului
Local time: 19:02
05 oct, monday
2100 80°F
W
13 mph
06 oct, tuesday
0000 78°F
W
13 mph
0300 78°F
W
12 mph
0600 78°F
W
11 mph
0900 80°F
W
12 mph
1200 80°F
SW
14 mph
1500 78°F
SW
7 mph
1800 78°F
W
8 mph