Weather in Penang in September 2025
- September is usually the coldest month of the year in Penang;
Average weather
Average temperature in Penang in September
The expected average maximum temperature in September is +31°C with a maximum of +33°C and a minimum of +24°C.
The average maximum temperature goes up 11% by the end of the month, compared with the beginning of the month, from +31°C to +32°C.
Is Penang warm or cold in September?
Penang is typically warm in September.
Maximum temperatures go down compared to the previous month from +31°C to +30°C. The minimum temperature also goes up from +25°C to +25°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is the coldest month in Penang, here is the comparison with other months:
Climate in Penang in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +31°C | +30°C | +30°C | ||||
| Min. temperature | ||||||
| +23°C | +22°C | +23°C | ||||
| Max. temperature | ||||||
| +34°C | +34°C | +34°C | ||||
| Rainfall | ||||||
| 176 mm | 216 mm | 298 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 81% | 82% | 83% | ||||
| Air pressure | ||||||
| 1008 HPa | 1009 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 0 | ||||
| Cloudy days | ||||||
| 3 | 1 | 1 | ||||
| Rainy days | ||||||
| 13 | 11 | 11 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +31°C in the day, the average maximum temperature lowers to +30°C. Prepare for more rain. Average rainfall goes from 176 mm to 216 mm. Humidity rises from 81% to 82%. The average wind speed doesn’t change much during September, staying around 1 m/s. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Penang is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Penang?
Climate Change over Years
The climate in Penang in September has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+30°C) and the highest in 2019 (+32°C). The driest year was 1981 with only 1358 mm of rainfall, and the wettest year was 2021 with 3959 mm.
FAQ
Is September a good time to visit Penang?
Can you sunbathe in Penang in September?
Is Penang rainy in September?
Is it sunny in Penang in September?
Other cities in Malaysia
Monthly weather in Penang
Source of the data
For this page, we’ve looked at the typical weather in Penang, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.