Singapore
Singapore in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Singapore in September is climatically mixed. The average daily high is around 29 °C, and the sea is about 29 °C. With about 21 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
54/100 · #4
Warmth
#6
Dryness
#4
Sun
#6
Sea warmth
#8
Published best categories: none
Singapore · SeptemberPhoto: Dietmar Rabich · CC BY-SA 4.0Climate facts
- Average high
- 29 °C
- Average low
- 25 °C
- Sea
- 29 °C
- Rainy days (est.)
- 21 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 84 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 29 | 25 | 23 | 203 | 5.6 | 85 | 2.2 | 29 | 54 |
| September (selected) | 29 | 25 | 21 | 191 | 5.6 | 84 | 2.0 | 29 | 54 |
| October | 30 | 25 | 25 | 237 | 5.7 | 83 | 1.6 | 29 | 52 |
How do the previous and next months compare?
Baseline: September (54/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | ±0 | -0.2 °C | +0.1 °C | +1.9 | +12.1 mm | ±0 h | +0.9 % | +0.2 m/s | ±0 °C |
| October | -2 | +0.2 °C | +0.1 °C | +3.6 | +46.2 mm | +0.1 h | -0.9 % | -0.3 m/s | +0.1 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Singapore in September?
The average daily high is around 29 °C, with an average daily low of about 25 °C.
Can you swim in Singapore in September?
The sea is about 29 °C (very warm).
Does it rain a lot in Singapore in September?
The curated estimate is about 21 rainy days per month, not a directly measured long-term average. Total precipitation averages around 191 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Singapore?
By the climate score, January and February are the strongest months for Singapore. For a beach trip: January, February, March and December. September is not among them.