Kihei, Maui weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: January – December
What is the weather like in Kihei, Maui in September?
In September, Kihei, Maui is hot: daytime highs average 29 °C, and even at night it stays warm at around 24 °C. The sea averages 26.7 °C – lovely and warm for swimming. The sun shines for around 9 hours a day. Rain is rare: about 2 days bring 8 mm in total. The air is often humid and muggy. All in all, September is an excellent month for a holiday in Kihei, Maui.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 100 | 100 | 99 |
| Day | 29° | 29° | 29° |
| Night | 24° | 24° | 24° |
| Sea | 26° | 27° | 27° |
| Sun | 9 h | 9 h | 9 h |
| Rain days | 3 | 2 | 4 |
More details for September
- Daylight
- 12 h 17 min06:12 – 18:30
- UV index
- 11 · extremeclear sky, noon (estimate)
- Muggy days
- 29 daysdew point 18 °C or more
- Wind
- 12 km/haverage daily peak
- Cloud cover
- 39 %on average
- Hot days
- 5 days30 °C or more
- Time zone
- UTC−10Pacific/Honolulu
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %98 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
Kihei, Maui in September: quick answers
Is Kihei, Maui hot in September?
Yes. In September, Kihei, Maui is hot: daytime highs average 29 °C and nights stay around 24 °C. On about 5 days the thermometer climbs to 30 °C or more.
Can you swim in Kihei, Maui in September?
Yes. In September the sea averages 26.7 °C – lovely and warm for swimming.
Does it rain much in Kihei, Maui in September?
Rain is rare: about 2 days bring 8 mm in total.
Kihei, Maui month by month
The whole year in Kihei, MauiAll destinations: USA
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)