September in Sepang typically sees daytime highs of 32°C (90°F) and nighttime lows of 24°C (75°F). September falls within the rainy season, so heavy rainfall is to be expected.
September in Sepang can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
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Pick a month to see the average temperature, rainfall and sunshine in Sepang - and find the best time to visit.
47-year average (1976-2025)
Based on our historical records, temperatures in Sepang typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 24°C (75°F).
47-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Sepang spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on weather observations in Sepang between 1999 and 2026, these are the recorded extremes during 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 is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the month
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Sepang climate overview or explore weather in Malaysia.
Where to go in September - average daytime high across popular destinations.
Kuching
32°C (90°F) Kuala Lumpur33°C (91°F) George Town31°C (88°F) Ipoh32°C (90°F) Pantai Cenang30°C (86°F) Johor Bahru31°C (88°F) Melaka30°C (86°F) Kota Kinabalu30°C (86°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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