Palau Palau Weather in September — Climate Guide
September in Palau is moderate
Palau Weather in September — Quick Answer
As of 2026- Avg temp
- 31° / 25°
- Rainfall
- 300mm · 20 days
- Crowds
- Quiet
As of 2026, Palau in September averages a high of 31°C and low of 25°C with 300mm of rain over about 20 days. Late wet season, hot and humid around 31°C/25°C. Light quick-drying clothing, swimwear, a rash guard and a rain jacket. UV stays extreme (11) under cloud.
September is moderate for Palau.
September is the back half of Palau's wet season, with the familiar 31°C/25°C heat and frequent but slightly easing rain toward the end of the month. It remains quiet and good value.
Diving and boat trips run when conditions allow, with low crowds and prices. As the wet season starts to wind down later in the month, some travelers find conditions improving, though it is still variable.
Travel score
Palau September Weather Stats
Avg High
31°C
Avg Low
25°C
Rainy Days
20
300mm total
Sunshine
5.5h
Daily avg
Humidity
84%
muggy
UV Index
11
Extreme
Wind
11 km/h
Gusts 22
Crowds
Quiet
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
7 μg/m³
PM10
14 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
37°C
Nighttime
27°C
Humidity and wind affect how the actual temperature feels.
Wind
11 km/h
Max gust 22 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Low crowds and good value
- Rain begins easing late in the month
- Quieter dive operations
Cons
- Still in the wet season
- Boat days can be cancelled
- Less reliable visibility
- Extreme UV and high humidity
September Events & Festivals
- Late wet season — rain easing slightly toward month's end
- Quiet, value travel window
- Boat days still weather-dependent
Palau in September — Full Picture
September is the back half of Palau's wet season, with the familiar 31°C/25°C heat and frequent but slightly easing rain toward the end of the month. It remains quiet and good value.
Diving and boat trips run when conditions allow, with low crowds and prices. As the wet season starts to wind down later in the month, some travelers find conditions improving, though it is still variable.
This is value-season travel on Palau's limited flights and rooms, with the usual caveat that the destination is expensive overall. Keep itineraries flexible for weather.
Visibility is less reliable than in the dry months, UV is extreme, and humidity is high. The Jellyfish Lake experience varies year to year — check first.
What to Wear & What to Pack
Late wet season, hot and humid around 31°C/25°C. Light quick-drying clothing, swimwear, a rash guard and a rain jacket. UV stays extreme (11) under cloud.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
31°C
24.7°C
17/mo
Summer (Jun·Jul·Aug)
31°C
25°C
21.7/mo
Autumn (Sep·Oct·Nov)
Current31°C
25°C
18.7/mo
Winter (Dec·Jan·Feb)
31°C
24.3°C
18/mo
Palau Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 31° | 24° | 19d·280mm | 6.5h | 82% | 11 | Busy | Peak |
| February (Best) | 31° | 24° | 16d·200mm | 7h | 80% | 11 | Busy | Peak |
| March (Best) | 31° | 24° | 16d·220mm | 7h | 80% | 12 | Busy | Peak |
| 31° | 25° | 16d·230mm | 7h | 80% | 12 | Busy | Peak | |
| 31° | 25° | 19d·280mm | 6h | 83% | 11 | Moderate | Shoulder | |
| 31° | 25° | 21d·320mm | 5.5h | 84% | 11 | Quiet | Low season | |
| 31° | 25° | 22d·380mm | 5h | 85% | 11 | Quiet | Low season | |
| 31° | 25° | 22d·360mm | 5.5h | 85% | 11 | Quiet | Low season | |
| 31° | 25° | 20d·300mm | 5.5h | 84% | 11 | Quiet | Low season | |
| 31° | 25° | 18d·250mm | 6h | 83% | 11 | Moderate | Shoulder | |
| 31° | 25° | 18d·240mm | 6h | 83% | 11 | Moderate | Peak | |
| 31° | 25° | 19d·290mm | 6h | 83% | 11 | Busy | Peak |
View Other Months
Palau September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Palau?
Palau in September is moderate. Tourist crowds are quiet and flight/hotel prices are low season.
What's the average temperature in Palau in September?
Palau September averages a high of 31°C and a low of 25°C.
Does it rain much in Palau in September?
Palau September averages 300mm of rainfall over about 20 rainy days.
What should I wear in Palau in September?
Late wet season, hot and humid around 31°C/25°C. Light quick-drying clothing, swimwear, a rash guard and a rain jacket. UV stays extreme (11) under cloud.
What time are sunrise and sunset in Palau in September?
Palau September sunrise is 06:00 and sunset is 18:10, with 12h 10min of daylight.
What's the air quality like in Palau in September?
Palau September air quality (AQI) averages 23, rated Good. PM2.5 averages 7μg/m³.
What activities are recommended in Palau in September?
In September, Palau is great for Diving (weather permitting), Rock Islands boat day (flexible plans), Snorkeling between showers.
Is September peak season in Palau?
Palau September crowds are quiet and prices are low season. You can travel relatively comfortably without long queues.
Best Months to Visit Palau
View Other Months
Planning a September trip to Palau?
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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.