United States Maui Weather in September — Climate Guide
September in Maui is very-high
September is very-high for Maui.
September is Maui's value-shoulder month — Aloha Festivals (Hawaii's largest cultural celebration since 1946, statewide) brings free Royal Court Investiture ceremonies + Hawaiian music + Hawaiian cultural events. Maui Aloha Festivals events run mid-September.
Hotel pricing settles back to shoulder-season levels post-Labor Day (15-25% below summer peak). Korean Chuseok holiday (varies mid-September) adds a brief Korean-tourist spike, but the overall demand drop after Labor Day makes this a smart-value Korean autumn window.
Travel score
Maui September Weather Stats
Avg High
31°C
Avg Low
22°C
Rainy Days
4
20mm total
Sunshine
10h
Daily avg
Humidity
65%
moderate
UV Index
11
Extreme
Wind
14 km/h
Gusts 30
Sea Temp
27°C
swimming
Crowds
Busy
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
6 μg/m³
PM10
15 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
32°C
Nighttime
24°C
Humidity and wind affect how the actual temperature feels.
Wind
14 km/h
Max gust 30 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Aloha Festivals (Hawaii's largest cultural event)
- Hotel pricing returns to shoulder-season levels
- Sea at warmest swimming temperature
Cons
- Hurricane peak season continues through September 30
- Days still hot at 31°C
- Korean Chuseok adds brief spike
September Events & Festivals
- Aloha Festivals (2nd-3rd week September, statewide Hawaiian cultural celebration)
- Hurricane peak continues
- Labor Day weekend (1st Monday September, US holiday)
Maui in September — Full Picture
September is Maui's value-shoulder month — Aloha Festivals (Hawaii's largest cultural celebration since 1946, statewide) brings free Royal Court Investiture ceremonies + Hawaiian music + Hawaiian cultural events. Maui Aloha Festivals events run mid-September.
Hotel pricing settles back to shoulder-season levels post-Labor Day (15-25% below summer peak). Korean Chuseok holiday (varies mid-September) adds a brief Korean-tourist spike, but the overall demand drop after Labor Day makes this a smart-value Korean autumn window.
Hurricane peak continues through September 30 — September is the peak risk month for Hawaii. Buy travel insurance with hurricane cancellation coverage.
Weather still hot (31°C / 88°F days, 27°C / 81°F sea) but more tolerable than the July-August peak. Outdoor activities at peak condition. Molokini snorkeling visibility excellent.
The smart September move: target the second or third week (during Aloha Festivals for the free cultural events). Pre-book Haleakala sunrise 60 days ahead.
What to Wear & What to Pack
Hot tropical + maximum UV. Hurricane-season rain jacket still in pack. Sea at warmest swimming temperature. Fleece for Haleakala.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
28°C
19.3°C
5.7/mo
Summer (Jun·Jul·Aug)
30.7°C
21.7°C
3.3/mo
Autumn (Sep·Oct·Nov)
Current30°C
21°C
6/mo
Winter (Dec·Jan·Feb)
27°C
18.3°C
10/mo
Maui Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 27° | 18° | 11d·90mm | 7h | 68% | 8 | Very busy | Peak | |
| February (Best) | 27° | 18° | 9d·70mm | 8h | 67% | 9 | Very busy | Peak |
| March (Best) | 27° | 19° | 7d·55mm | 8h | 66% | 9 | Busy | Shoulder |
| April (Best) | 28° | 19° | 5d·30mm | 9h | 64% | 10 | Busy | Shoulder |
| May (Best) | 29° | 20° | 5d·25mm | 10h | 64% | 11 | Very busy | Peak |
| June (Best) | 30° | 21° | 3d·10mm | 11h | 62% | 11 | Very busy | Peak |
| July (Best) | 31° | 22° | 3d·8mm | 11h | 64% | 12 | Very busy | Peak |
| August (Best) | 31° | 22° | 4d·15mm | 11h | 65% | 12 | Very busy | Peak |
| September (Best) | 31° | 22° | 4d·20mm | 10h | 65% | 11 | Busy | Shoulder |
| October (Best) | 30° | 21° | 6d·40mm | 9h | 67% | 9 | Moderate | Shoulder |
| November (Best) | 29° | 20° | 8d·65mm | 8h | 69% | 8 | Moderate | Shoulder |
| 27° | 19° | 10d·90mm | 7h | 70% | 7 | Very busy | Peak |
View Other Months
Maui September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Maui?
Maui in September is very-high. Tourist crowds are busy and flight/hotel prices are shoulder.
What's the average temperature in Maui in September?
Maui September averages a high of 31°C and a low of 22°C.
Does it rain much in Maui in September?
Maui September averages 20mm of rainfall over about 4 rainy days.
What should I wear in Maui in September?
Hot tropical + maximum UV. Hurricane-season rain jacket still in pack. Sea at warmest swimming temperature. Fleece for Haleakala.
What time are sunrise and sunset in Maui in September?
Maui September sunrise is 06:10 and sunset is 18:25, with 12h 15m of daylight.
What's the air quality like in Maui in September?
Maui September air quality (AQI) averages 25, rated Good. PM2.5 averages 6μg/m³.
What activities are recommended in Maui in September?
In September, Maui is great for Aloha Festivals Maui events, Wailea + Ka'anapali Beach, Haleakala sunrise.
Is September peak season in Maui?
Maui September crowds are busy and prices are shoulder. Advance reservations are strongly recommended.
Best Months to Visit Maui
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.