Gunung Mulu National Park Weather in September
During September, Gunung Mulu National Park experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 21°C (70°F). September sits within the rainy season, so expect regular and often heavy rainfall.
Rainfall in Gunung Mulu National Park in September
Gunung Mulu National Park is in the rainy season in September, with rain on around 22 days and an average of 257 mm (10 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Gunung Mulu National Park in September
Expect highs of 31°C (88°F) in Gunung Mulu National Park in September, with nights dropping to around 21°C (70°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. Nights remain mild at 21°C (70°F), making evenings a pleasant time to be outdoors.For more travel ideas, our weather planner can help you explore destinations around the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Malaysia, check out our Gunung Mulu National Park 's climate page.
Gunung Mulu National Park Temperature in September
Min Temperature
21°C (70°F)
Max Temperature
31°C (88°F)
Chance of Rain
74%
Precipitation
257 mm (10 in)
Rainy days
22 days
Historical weather for Gunung Mulu National Park in September
Browse day-by-day weather records for Gunung Mulu National Park spanning 21 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Gunung Mulu National Park historical weather extremes in September
Based on 19 years of weather observations (2006-2025), these are the most extreme conditions recorded in Gunung Mulu National Park .
- Gunung Mulu National Park recorded its highest September temperature of 34°C (93°F) on September 6, 2024.
- The coldest September day was on September 1, 2006, with a maximum of 26°C (79°F).
- Nighttime temperatures dropped to 19°C (66°F) on September 16, 2021, marking the coldest September night on record.
- The heaviest September precipitation occurred on September 11, 2025, when 124 mm (4.9 in) of precipitation fell.
Best Places in Malaysia in September
Find out more about the weather in Malaysia and which places have the best travel conditions in this month. See all of Malaysia in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Gunung Mulu National Park in September
Warm but pleasant conditions in Gunung Mulu National Park in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions.What To Do in Gunung Mulu National Park in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Malaysia, check out our Gunung Mulu National Park 's climate page.
See the full Gunung Mulu National Park climate overview or explore weather in Malaysia.
