Sepang Weather in September
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.
Rainfall in Sepang in September
As part of the rainy season, Sepang sees around 18 days of rain in September, with an average of 213 mm (8.4 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.
Temperature in Sepang in September
Sepang in September gets highs of 32°C (90°F) during the day and drops to 24°C (75°F) at night. Mornings and evenings are often more comfortable than the peak afternoon hours. Nights are warm at 24°C (75°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Sepang in September
The month experiences a moderate amount of sunlight, with 164 hours of sunshine. This provides a nice balance between sunshine and rain.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.
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 Sepang's climate page.
Sepang Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
32°C (90°F)
Chance of Rain
60%
Precipitation
213 mm (8.4 in)
Rainy days
18 days
Humidity
80% *
Sunshine
164 hours *
Percentage Sunshine
*
Daily Historical Temperatures
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).
Average temperatures in September
Daily Historical Precipitation
47-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Sepang in September
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.
Sepang historical weather extremes in September
Based on weather observations in Sepang between 1999 and 2025, these are the recorded extremes during September.
- The warmest day in September was on September 5, 2005, with a maximum of 35°C (95°F).
- On September 13, 2025, Sepang saw its coldest September day with temperatures maxing out at 26°C (79°F).
- The coldest night in September in Sepang was on September 16, 2025, with a minimum of 22°C (72°F).
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
pleasant
tolerable
unpleasant
poor
What to Wear in Sepang in September
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 monthWhat To Do in Sepang 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 Sepang's climate page.
Temperature Rainfall Sunshine Humidity
See the full Sepang climate overview or explore weather in Malaysia.
