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🇺🇸 Weather in Maui in September
This is what the weather in Maui (Kihei, Hawaii, USA) was like in September over the years 2017–2026.
Key facts at a glance
Prevailing weather: Sunny
Avg. daytime high
26.6 °C
25.7 °C – 27.2 °C
Avg. night-time low
24.7 °C
23.9 °C – 25.5 °C
Avg. rain days in period
8.4
28 % of days · ≥ 1.0 mm
Avg. precipitation in period
29.9 mm
10.1 mm – 59.1 mm
Avg. cloud cover
33 %
This data source has no sunshine hours – average cloud cover is shown instead.
Avg. sea temperature
27.2 °C
Sea measuring point approx. 6 km from the location
Extremes: Highest temperature 28.0 °C (8 Sep 2026) · Lowest temperature 23.2 °C (14 Sep 2021) · Avg. daily peak wind 26 km/h
Weather mix of all days
- 122Sunny
- 75Partly cloudy
- 6Cloudy
- 78Light rain
- 6Rain
Summary
- On average 26.6 °C during the day and 24.7 °C at night.
- On average 8.4 rain days (Rain day = at least 1.0 mm of precipitation) with 29.9 mm of precipitation in total.
- In 1 of 10 years there was not a single rain day.
- The sea averaged 27.2 °C.
- Prevailing weather: Sunny.
- Warmest year: 2019 (avg. 27.2 °C), coolest: 2021 (avg. 25.7 °C).
- Wettest year: 2018 (59.1 mm), driest: 2024 (10.1 mm).
- Extremes: 28.0 °C on 8 Sep 2026 and 23.2 °C on 14 Sep 2021.
Overall values from all 10 years. How is this calculated?
Charts
Temperatures per year
Average over your travel period
Avg. daytime high: 2017 27°, 2018 27°, 2019 27°, 2020 26°, 2021 26°, 2022 27°, 2023 26°, 2024 27°, 2025 27°, 2026 27°. Avg. night-time low: 2017 25°, 2018 25°, 2019 25°, 2020 24°, 2021 24°, 2022 25°, 2023 24°, 2024 25°, 2025 25°, 2026 25°. Sea temperature: 2017 28°, 2018 27°, 2019 28°, 2020 27°, 2021 26°, 2022 27°, 2023 27°, 2024 27°, 2025 27°, 2026 27°.
Precipitation & rain days
Precipitation (mm): 2017 21, 2018 59, 2019 50, 2020 17, 2021 31, 2022 22, 2023 14, 2024 10, 2025 17, 2026 59.
Year by year
2026
Avg. max26.8°Avg. min25.2°- Rain days
- 17 Rain days
- Precipitation
- 58.9 mm
- Avg. cloud cover
- –
- Sea temperature
- 27.3 °C
Max 28.0 °C · Min 24.2 °C
2025
Avg. max26.7°Avg. min24.6°- Rain days
- 5 Rain days
- Precipitation
- 16.9 mm
- Avg. cloud cover
- 26 % cloudy
- Sea temperature
- 27.2 °C
Max 27.7 °C · Min 23.8 °C
2024
Avg. max26.6°Avg. min24.6°- Rain days
- 1 Rain days
- Precipitation
- 10.1 mm
- Avg. cloud cover
- 23 % cloudy
- Sea temperature
- 27.0 °C
Max 27.4 °C · Min 24.0 °C
2023
Avg. max26.3°Avg. min24.3°- Rain days
- 0 Rain days
- Precipitation
- 13.9 mm
- Avg. cloud cover
- 30 % cloudy
- Sea temperature
- 26.5 °C
Max 27.0 °C · Min 23.6 °C
2022
Avg. max26.7°Avg. min24.6°- Rain days
- 6 Rain days
- Precipitation
- 21.6 mm
- Avg. cloud cover
- 30 % cloudy
- Sea temperature
- 27.2 °C
Max 27.3 °C · Min 24.1 °C
2021
Avg. max25.7°Avg. min23.9°- Rain days
- 14 Rain days
- Precipitation
- 30.9 mm
- Avg. cloud cover
- 34 % cloudy
- Sea temperature
- 26.3 °C
Max 26.4 °C · Min 23.2 °C
2020
Avg. max26.3°Avg. min24.4°- Rain days
- 3 Rain days
- Precipitation
- 16.8 mm
- Avg. cloud cover
- 36 % cloudy
- Sea temperature
- 27.1 °C
Max 26.9 °C · Min 23.5 °C
2019
Avg. max27.2°Avg. min25.5°- Rain days
- 17 Rain days
- Precipitation
- 49.8 mm
- Avg. cloud cover
- 50 % cloudy
- Sea temperature
- 28.4 °C
Max 27.9 °C · Min 24.8 °C
2018
Avg. max26.6°Avg. min24.8°- Rain days
- 16 Rain days
- Precipitation
- 59.1 mm
- Avg. cloud cover
- 39 % cloudy
- Sea temperature
- 27.3 °C
Max 27.9 °C · Min 23.4 °C
2017
Avg. max26.8°Avg. min24.7°- Rain days
- 5 Rain days
- Precipitation
- 20.8 mm
- Avg. cloud cover
- 31 % cloudy
- Sea temperature
- 27.5 °C
Max 27.6 °C · Min 23.7 °C
Frequently asked questions
- How warm is it in Maui in September?
- Daytime highs averaged 26.6 °C, night-time lows 24.7 °C. The highest value of the past 10 years was 28.0 °C (8 Sep 2026), the lowest 23.2 °C (14 Sep 2021).
- How often does it rain in Maui in September?
- On average there were 8.4 rain days (at least 1 mm) with 29.9 mm of precipitation in total. In 1 of 10 years there was no rain day at all.
- How warm is the sea in Maui in September?
- The sea temperature averaged 27.2 °C (open-sea point approx. 6 km from the town).
Check your exact travel dates
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Other destinations in September
Data sources
- Weather data
- Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. Snow depth is the model value for the grid cell, not the depth on the slopes. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains. - Sea temperature
- MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis) - Sea measuring point approx. 6 km from the location (20.760, -156.500)
- Place search
- Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)