20.09
sun
sun
Day
79°F
W 20 mph
Precip.
23%
23%
Night
77°F
W 19 mph
Precip.
23%
23%
21.09
mon
mon
Day
79°F
SW 17 mph
Precip.
7%
7%
Night
77°F
W 16 mph
Precip.
39%
39%
22.09
tue
tue
Day
79°F
W 21 mph
Precip.
21%
21%
Night
77°F
W 19 mph
Precip.
27%
27%
23.09
wed
wed
Day
77°F
W 18 mph
Precip.
37%
37%
Night
77°F
W 16 mph
Precip.
42%
42%
24.09
thu
thu
Day
77°F
W 18 mph
Precip.
62%
62%
Night
75°F
W 19 mph
Precip.
45%
45%
25.09
fri
fri
Day
77°F
W 20 mph
Precip.
21%
21%
Night
77°F
W 21 mph
Precip.
18%
18%
26.09
sat
sat
Day
77°F
W 25 mph
Precip.
32%
32%
Night
75°F
W 24 mph
Precip.
19%
19%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 80.4°F. The highest and lowest sea temperatures during the month were 81.1°F and 79.7°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 80.1°F. The highest and lowest sea temperatures during the month were 81.1°F and 79.3°F.
Air temperature in Kahului, °F
Precipitation total in Kahului, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Kahului
Kahului on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Kahului
Local time: 13:27
September 20, sunday
1500
79°F
W
20 mph
20 mph
1800
77°F
W
17 mph
17 mph
2100
77°F
W
19 mph
19 mph
September 21, monday
0000
77°F
W
19 mph
19 mph
0300
75°F
W
18 mph
18 mph
0600
77°F
W
16 mph
16 mph
0900
79°F
W
16 mph
16 mph
1200
79°F
SW
17 mph
17 mph
