Month guide · Singapore
Singapore in September
What September is really like in Singapore: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
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Quick answer
September is a shoulder-season month. Expect average highs of 31°C (88°F), lows of 25°C (77°F), about 14 rainy days and roughly 12.1 hours of daylight. Hotel prices spike around the Formula 1 night race; in some years smoke haze from regional fires can affect air quality.
Key facts
- Average high / low
- 31°C (88°F) / 25°C (77°F)
- Rainy days
- About 14
- Daylight
- About 12.1 hours
- Sea temperature
- 29°C (84°F)
- Crowds
- Busy
- Hotel prices
- Highest
Weather in September
September is the 8th-warmest month in Singapore: days average 31°C (88°F) against a yearly average high of 31°C (88°F), and nights fall to about 25°C (77°F). Rain falls on roughly 14 of its 30 days. Compared with August (31°C (88°F)), September is about as warm; by October highs stay near 31°C (88°F).
- Sunrise (15 September)
- About 06:56
- Sunset (15 September)
- About 19:03
- Daylight
- About 12.1 hours
- Sea
- 29°C (84°F)
Southwest monsoon (June–September). Relatively drier with short pre-dawn squalls; National Day decorations in August and occasional haze in some years.
Crowds and prices
On a 1–5 scale, September rates 4 for crowds (the peak is December at 5) and 5 for hotel prices (highest in September). Book accommodation early: September is one of the pricier months.
Events in September
- Formula 1 Singapore Grand Prix — night street race at Marina Bay (usually September or early October)
- Mid-Autumn Festival lanterns in Chinatown and Gardens by the Bay (September or early October)
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in September
With frequent rain, plan around indoor sights and keep outdoor time flexible.
Gallery · Civic District
National Gallery Singapore
Even without a gallery ticket, head to the rooftop for the view over the Padang and the bay.
- Time needed
- 2–3 hours
- Cost
- Mid-priced
- Art
- Rainy day
- Architecture
- Views
Museum · Civic District
Asian Civilisations Museum
On the Singapore River at Empress Place, this museum traces the trade links that shaped Singapore, from Chinese ceramics to Islamic manuscripts and Indian bronzes.
- Time needed
- 2 hours
- Cost
- Mid-priced
- History
- Art
- Rainy day
Museum · Civic District
National Museum of Singapore
Climb Fort Canning Park behind the museum afterwards for its spice garden and colonial-era gates.
- Time needed
- 2 hours
- Cost
- Mid-priced
- History
- Rainy day
- Architecture
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Architecture · Changi
Jewel Changi Airport
A glass doughnut linked to Changi's terminals, Jewel shelters the HSBC Rain Vortex — at 40 metres the world's tallest indoor waterfall — inside the terraced Shiseido Forest Valley.
- Time needed
- 1–2 hours
- Cost
- Free
- Free
- Kids
- Rainy day
- Architecture
- Photo spot
The sea averages 29°C (84°F) — warm enough to swim. Best beaches near Singapore.
What to pack
For highs near 31°C, lows near 25°C and 14 wet days: light, breathable clothes, a sun hat and high-factor sunscreen; a compact umbrella and waterproof shoes — rain is frequent; comfortable walking shoes.
Is September a good time to visit Singapore?
A shoulder-season month, with 2 notable events on the calendar. If your dates are flexible, February–April and July–August are better overall. Compare every month.
Singapore in other months
Questions travellers ask
+Is September a good time to visit Singapore?
It is a shoulder-season month. Hotel prices spike around the Formula 1 night race; in some years smoke haze from regional fires can affect air quality.
+How warm is Singapore in September?
Average highs are around 31°C (88°F) and lows around 25°C (77°F).
+Does it rain a lot in Singapore in September?
Expect rain on about 14 days of the month, so pack for wet weather.