Singapore weather in September
In September, Singapore has an average high of 29 °C85 °F and an average low of 25 °C77 °F, with about 167 mm6.6 in of precipitation. It is the 5th warmest month of the year and ranks 10th for precipitation.
How September compares with other months
Compared with August, September is about the same temperature and drier by 6 mm0.3 in. Compared with October, September is about the same temperature and drier by 43 mm1.7 in. Daylight lasts about 12.1 hours around the middle of the month. Average relative humidity is 83% and the average cloud amount 80%.
Is September a good time to visit Singapore?
September is not among the most comfortable months by our comfort score: it is hot (average high 29 °C85 °F), it is fairly wet (167 mm6.6 in) and it is humid (83%). The most comfortable months in Singapore are February.
What to wear in September
For Singapore in September, pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Singapore | 2985 | 2577 | 1676.6 |
| Batam | 2984 | 2780 | 1656.5 |
| Tanjung Pinang | 2984 | 2780 | 1766.9 |
| Kluang | 2985 | 2475 | 1656.5 |
| Batu Pahat | 3086 | 2476 | 1656.5 |
| Malacca | 2985 | 2679 | 1696.6 |
| Seremban | 2984 | 2578 | 1857.3 |
| Dumai | 2984 | 2374 | 2108.3 |
| Pekanbaru | 2985 | 2374 | 2359.3 |
Other months in Singapore
- January28 °C83 °F / 24 °C75 °F
- February29 °C84 °F / 24 °C74 °F
- March30 °C85 °F / 24 °C76 °F
- April30 °C86 °F / 25 °C78 °F
- May30 °C86 °F / 26 °C79 °F
- June29 °C85 °F / 26 °C78 °F
- July29 °C84 °F / 25 °C78 °F
- August29 °C84 °F / 25 °C77 °F
- September29 °C85 °F / 25 °C77 °F
- October29 °C85 °F / 25 °C77 °F
- November29 °C84 °F / 25 °C77 °F
- December28 °C83 °F / 24 °C76 °F
Frequently asked questions
How warm is Singapore in September?
In September the average high in Singapore is 29 °C (85 °F) and the average low is 25 °C (77 °F).
Does it rain a lot in Singapore in September?
On average about 167 mm (6.6 in) of precipitation falls in September; it ranks 10th of the 12 months.
Is September the warmest month in Singapore?
No. The warmest month in Singapore is April, with an average high of 30 °C (86 °F). The coldest month is February, with an average low of 24 °C (74 °F).
How long is the day in Singapore in September?
In the middle of September the day in Singapore lasts about 12.1 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Singapore in September?
The average relative humidity in September is about 83%. Combined with warm days, it can feel muggy.
How cloudy is Singapore in September?
On average about 80% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.