Climate averages 1991–2020
Shah Alam weather
in September.
A hot, wet month: the joint 5th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Shah Alam: daytime highs average 29.9°C and nights cool to about 23.6°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 129 mm of rain on roughly 21 days, which makes September a wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 08 min on an average September day.
The nearest other city in this atlas is Kampung Baru Subang (7 km away). In September its highs average 30.0°C, about as warm as Shah Alam, with 165 mm of rain.
Among the 72 cities listed in Malaysia, Shah Alam ranks joint 17th of 72 for the warmest September highs and joint 4th of 72 for the driest September (rainfall, lowest first). The mean September high of those 72 cities is 29.6°C; Shah Alam is 0.3°C warmer than that mean.
From September to October, average highs fall by 0.4°C to 29.4°C, and monthly rainfall rises from 129 mm to 187 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Shah Alam climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.9°C22.7°C | 22.7°C | 200 | 21.1 | 12.012 h |
| February | 29.6°C22.8°C | 22.8°C | 126 | 16.5 | 12.012 h |
| March | 30.0°C23.5°C | 23.5°C | 168 | 22.1 | 12.112 h |
| April | 29.8°C23.8°C | 23.8°C | 188 | 24.6 | 12.212 h |
| May | 29.9°C24.1°C | 24.1°C | 154 | 23.3 | 12.312 h |
| June | 30.0°C24.0°C | 24.0°C | 97 | 16.8 | 12.312 h |
| July | 30.0°C23.8°C | 23.8°C | 100 | 16.9 | 12.312 h |
| August | 30.1°C23.8°C | 23.8°C | 109 | 18.6 | 12.212 h |
| September, selected | 29.9°C23.6°C | 23.6°C | 129 | 20.5 | 12.112 h |
| October | 29.4°C23.5°C | 23.5°C | 187 | 24.6 | 12.112 h |
| November | 28.7°C23.2°C | 23.2°C | 314 | 27.7 | 12.012 h |
| December | 28.5°C23.0°C | 23.0°C | 280 | 26.1 | 11.912 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Kampung Baru Subang in SeptemberMalaysia · 7 kmHigh 30.0°C · Low 23.6°C · 165 mm rain
- Petaling Jaya in SeptemberMalaysia · 9 kmHigh 29.9°C · Low 23.3°C · 129 mm rain
- Klang in SeptemberMalaysia · 11 kmHigh 29.4°C · Low 24.7°C · 129 mm rain
- Puchong in SeptemberMalaysia · 13 kmHigh 30.0°C · Low 23.4°C · 129 mm rain
- Bukit Rahman Putra in SeptemberMalaysia · 15 kmHigh 29.8°C · Low 22.9°C · 165 mm rain
- Bukit Jalil in SeptemberMalaysia · 17 kmHigh 29.5°C · Low 22.8°C · 217 mm rain
- Kapar in SeptemberMalaysia · 17 kmHigh 29.4°C · Low 24.4°C · 165 mm rain
- Kuala Lumpur in SeptemberMalaysia · 18 kmHigh 29.6°C · Low 23.0°C · 234 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Shah Alam) is explained once on the Shah Alam year overview and on the Sources, method and limits page.
Petaling Jaya, Puchong and Klang lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.