Jakarta · September
Run in the pre-dawn.
Average high is 90°F with a 75°F overnight low. Expect 18 rain days — plan around the radar. Humid heat punishes mid-morning — get out before sunrise for the only truly comfortable window.
Avg high / low
90° / 75°F
Humidity
73%
Rain days
18/mo
Wind
9 mph
What September feels like in Jakarta
Sunrise
05:45
Mid-month average
Sunset
17:49
Mid-month average
Time-of-day breakdown
Morning
Cool relative to the day's peak, but heat builds fast. By 10 AM you're already chasing comfort.
Midday
Heat peaks here. Skip unless you've got shade and pace tolerance.
Evening
Cools off after sunset but still warm. Good for easy efforts; avoid hard intervals if you're chasing pace.
What to wear running in Jakarta in September
The kit for September in Jakarta: light, breathable, and moisture-wicking — singlet or short-sleeve only, a water-resistant cap or jacket on standby.
September vs the surrounding months
vs August
+1° avg high
+1 rain days
Jakarta in August →
September
90°F avg high
18 rain days
Best: pre-dawn
vs October
0° avg high
-7 rain days
Jakarta in October →
Frequently Asked Questions
What is the best time of day to run in Jakarta in September?+
Pre-dawn. Humid heat punishes mid-morning — get out before sunrise for the only truly comfortable window.
What's the average temperature in Jakarta in September?+
Average high 90°F, average low 75°F.
How does September compare to surrounding months in Jakarta?+
Compared to August (avg high 90°F), September is warmer. Compared to October (avg high 90°F), September is warmer.
Does it rain often in Jakarta in September?+
Expect about 18 measurable rain days in September, on average.