Lahaina, 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 Lahaina, Maui in September?
In September, Lahaina, Maui is hot: daytime highs average 29 °C, and even at night it stays warm at around 25 °C. The sea averages 26.8 °C – lovely and warm for swimming. The sun shines for around 9 hours a day. It hardly ever rains. The air is often humid and muggy. All in all, September is an excellent month for a holiday in Lahaina, Maui.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 100 | 99 | 97 |
| Day | 29° | 29° | 28° |
| Night | 25° | 25° | 24° |
| Sea | 27° | 27° | 27° |
| Sun | 9 h | 9 h | 8 h |
| Rain days | 1 | 1 | 2 |
More details for September
- Daylight
- 12 h 17 min06:13 – 18:31
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 28 daysdew point 18 °C or moreAll months
- Wind
- 27 km/haverage daily peakAll months
- Cloud cover
- 29 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Time zone
- UTC−10Pacific/Honolulu
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %97 %
- 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
Lahaina, Maui in September: quick answers
Is Lahaina, Maui hot in September?
Yes. In September, Lahaina, Maui is hot: daytime highs average 29 °C and nights stay around 25 °C.
Can you swim in Lahaina, Maui in September?
Yes. In September the sea averages 26.8 °C – lovely and warm for swimming.
Does it rain much in Lahaina, Maui in September?
It hardly ever rains.
Lahaina, Maui month by month
The whole year in Lahaina, MauiAll destinations: USAHawaii weather in SeptemberWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences