What January feels like in Jakarta
January falls in Jakarta's wet season — the rainfall numbers rise clearly above the dry months. Expect proper heat in the afternoon — slow down between noon and four. Little changes after sunset — nights stay warm, only slightly below the daytime level. Thick, humid air means clothes cling and the heat feels stronger than the number.
Rain in Jakarta in January
Dry days are the exception, with rain on most days. Rain tends to come in heavy bursts: about 10.2 mm (0.4 in) on an average rainy day. That is close to Jakarta's typical rain per wet day for the whole year (about 8.3 mm). It is among the three wettest months of the year.
Daylight and sunshine in January
On 15 January the sun rises at about 5:48 am and sets around 6:15 pm local time, giving 12 h 27 min of daylight. Day length barely changes from mid-December (2 min shorter). Close to the equator, sunrise and sunset times move very little through the year. About 67% of daylight hours are sunny; in short, there are plenty of bright spells.
How January compares to the rest of the year
Ranked by average high, January comes out as the 2nd coolest month in Jakarta. Against December, the average high is 0.8°C (1.4°F) lower, with 9 mm more rain. Temperatures keep falling into February. February averages a high of 29.1°C (84.4°F).
Who January suits
- Sightseeing: less ideal — rain falls on more than half the days.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: less ideal — too many rainy days.
- Museums & indoor: a good choice — with rain on most days, galleries and museums make easy plans.
Tips for visiting Jakarta in January
Rain Protection
A compact umbrella and a light waterproof jacket.
Sun Protection
Sunscreen, a hat and sunglasses; light breathable clothes.
Quick questions
How warm is Jakarta in January?
Expect around 29.1°C (84.4°F) in the afternoon and 23.7°C (74.7°F) at night, which most visitors would call hot.
Does it rain a lot in Jakarta in January?
Yes, fairly — rain falls most days and totals about 285 mm, so an umbrella is worth carrying.
What should I wear in Jakarta in January?
The numbers point to rain protection and sun protection. There is little need to change for the evening.
Is January or February better for visiting Jakarta?
On our 12-month climate ranking, February comes out ahead (#10 of 12 vs #11). February has fewer rainy days.