What September feels like in Jakarta
September is part of Jakarta's dry season, when rain totals drop well below the wet months. Afternoons are hot, so sightseeing works best in the morning or evening. Once the sun goes down the air changes: nights stay warm. Some humidity hangs in the air, noticeable when the sun is strong.
Rain in Jakarta in September
Expect a mix of dry and wet days, with rain about one day in 3. Wet days average about 6.2 mm (0.2 in), enough to soak you without an umbrella. That is lighter than the city's yearly norm of about 8.3 mm per rainy day. It is among the three driest months of the year.
Daylight and sunshine in September
On 15 September the sun rises at about 5:46 am and sets around 5:50 pm local time, giving 12 h 4 min of daylight. Since mid-August the day has gained 10 min. Close to the equator, sunrise and sunset times move very little through the year. Measured sunshine covers about 92% of the daylight — skies are mostly clear.
How September compares to the rest of the year
In Jakarta's temperature order, September sits as the warmest month. Afternoons run 0.5°C (0.9°F) warmer than in August, with 19 mm more rain. Temperatures barely move from one month to the next here. October averages a high of 32°C (89.6°F).
Who September suits
- Sightseeing: a good fit — daytime temperatures are fine for walking around.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: less ideal — too many rainy days.
Tips for visiting Jakarta in September
Rain Protection
A compact umbrella and a light waterproof jacket.
Sun Protection
Loose, breathable clothing plus sunscreen and a wide-brimmed hat.
Quick questions
How warm is Jakarta in September?
Expect around 32°C (89.6°F) in the afternoon and 23.6°C (74.5°F) at night, which most visitors would call hot.
Does it rain a lot in Jakarta in September?
Quite a lot — 74 mm spread over about 12 days.
What should I wear in Jakarta in September?
Based on the averages: rain protection and sun protection. Evenings feel similar to the day, so the same clothes work from morning to night.
Is September or October better for visiting Jakarta?
On our 12-month climate ranking, September comes out ahead (#2 of 12 vs #5). October has more rainy days.