Kahului weather in September
September is a fair month to visit Kahului: highs of 26°C (79°F) and about 38 mm (1.5 in) of rain on average. Nights average 24°C (76°F) and cloud cover 39% (NASA POWER, 2001–2025 averages). The sea averages 27°C (81°F). It is the 4th driest month of the year and the warmest. Compared with August, it is about as warm and about as wet; October brings highs of 26°C (78°F) and 55 mm (2.2 in) of rain.
Is September a good time to visit Kahului?
fair month Weather score 86/100.
September is a fair month in Kahului.
Does it rain a lot in Kahului in September?
No, it is usually dry: about 38 mm (1.5 in) falls in an average September. It is the 4th driest month of the year.
How warm is Kahului in September?
Days average 26°C (79°F) and nights 24°C (76°F).
Kahului weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 23°C (74°F) | 22°C (71°F) | 61 mm | 42% | 25°C (77°F) | fair |
| February | 23°C (73°F) | 21°C (70°F) | 63 mm | 47% | 25°C (76°F) | fair |
| March | 23°C (74°F) | 21°C (70°F) | 83 mm | 53% | 25°C (76°F) | fair |
| April | 24°C (74°F) | 22°C (71°F) | 47 mm | 48% | 25°C (77°F) | fair |
| May | 24°C (76°F) | 23°C (73°F) | 37 mm | 41% | 26°C (78°F) | fair |
| June | 25°C (77°F) | 23°C (74°F) | 28 mm | 41% | 26°C (79°F) | fair |
| July | 26°C (78°F) | 24°C (75°F) | 32 mm | 40% | 26°C (79°F) | fair |
| August | 26°C (79°F) | 24°C (75°F) | 40 mm | 36% | 27°C (80°F) | fair |
| September | 26°C (79°F) | 24°C (76°F) | 38 mm | 39% | 27°C (81°F) | fair |
| October | 26°C (78°F) | 24°C (75°F) | 55 mm | 46% | 27°C (80°F) | fair |
| November | 25°C (77°F) | 23°C (74°F) | 65 mm | 48% | 26°C (79°F) | fair |
| December | 24°C (75°F) | 22°C (72°F) | 71 mm | 46% | 26°C (78°F) | fair |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months