Singapore · September
Run in the morning.
Comfortable average high of 85°F, dipping to 77°F at night. Humidity averages 84% — the limiting factor on most runs. Expect 27 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
85° / 77°F
Humidity
84%
Rain days
27/mo
Wind
9 mph
What September feels like in Singapore
Sunrise
06:56
Mid-month average
Sunset
19:03
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Singapore in September
The kit for September in Singapore: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
September vs the surrounding months
vs August
+1° avg high
-3 rain days
Singapore in August →
September
85°F avg high
27 rain days
Best: morning
vs October
0° avg high
-2 rain days
Singapore in October →
Frequently Asked Questions
What is the best time of day to run in Singapore in September?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Singapore in September?+
Average high 85°F, average low 77°F.
How does September compare to surrounding months in Singapore?+
Compared to August (avg high 84°F), September is warmer. Compared to October (avg high 85°F), September is cooler.
Does it rain often in Singapore in September?+
Expect about 27 measurable rain days in September, on average.