September in Singapore averages highs of 30 °C (85 °F) and lows of 25 °C (76 °F), with about 19 rainy days and 12 h 07 min of daylight.
September weather in Singapore at a glance
average high to low each dot ≈ 3 rainy days
Is September a good time to visit Singapore?
Tough month: hot and wet. September is usually low season in Singapore: rooms are typically easier to find and cheaper.
Our rule: a month scores 2 points for comfortable average highs of 18–28 °C (1 point for 14–18 or 28–32 °C) and 2 points for 5 or fewer rainy days (1 point for 6–10). Average highs above 35 °C or below 8 °C make it a tough month whatever the rain. A rainy day here means 2 mm of rain or more. 4 points = great, 3 = good, 2 = mixed, 0–1 = tough.
Holidays and events in September 2026
No public holidays fall in September 2026 in Singapore, so opening hours should be normal.
Things to do in Singapore in September
With frequent rain in September, here are the indoor picks first, then the outdoor ones for drier spells.
- Cloud Forest and Flower Dome indoors
- Hawker centres — Maxwell, Lau Pa Sat, Tiong Bahru indoors
- Gardens by the Bay — Supertree show in the evening outdoors
- Marina Bay Sands area outdoors
- Singapore Botanic Gardens — free outdoors
- Sentosa — beaches and attractions outdoors
Where to stay: Marina Bay for skyline; Chinatown or Tanjong Pagar for food; Kampong Glam for value.
What to pack for Singapore in September
- Summer clothes, sunglasses and sunscreen.
- An umbrella or a light waterproof: about 19 days this month see real rain.
- Comfortable walking shoes.
What a day in Singapore costs
| Budget traveller | Mid-range | |
|---|---|---|
| Typical total per person, per day | €60–140 | €170–360 |
Excluding flights. September is usually low season in Singapore: rooms are typically easier to find and cheaper.
September in nearby cities
| City | High / low | Rainy days | Verdict |
|---|---|---|---|
| Bangkok | 31° / 25° | 24 | Tough month |
| Bali | 28° / 23° | 11 | Mixed weather |
| Kyoto | 28° / 20° | 12 | Mixed weather |
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FAQ
Is September a good time to visit Singapore?
By the numbers, September is a tough month: hot and wet, with average highs of 30 °C (85 °F) and about 19 rainy days. September is usually low season in Singapore: rooms are typically easier to find and cheaper. The best months for weather are January, February, September (the mildest; no month is easy here).
How warm is Singapore in September?
Average highs are 30 °C (85 °F) and lows 25 °C (76 °F) (2015–2024 averages).
Does it rain a lot in Singapore in September?
Expect about 19 days with 2 mm of rain or more, about 211 mm in total. It is the 2nd driest month of the year in Singapore.
Sources: climate averages from Open-Meteo historical weather (ERA5 reanalysis, 2015–2024); sea temperatures from the Open-Meteo marine API (2023–2024); public holidays from Nager.Date. Daylight is calculated for the 15th of the month. Averages are a guide, not a forecast. Costs are typical ranges per person per day, excluding flights. In the tropics, reanalysis data tends to count more light-rain days than local weather stations do; rain there often comes as short afternoon downpours.