Weather in Jakarta in July

Shoulder season. July sits in between. You will get good days and you will lose some. You should expect rain on 15 days of the month, which is more days wet than dry.

July ranks 2 of 12 in Jakarta. Only August scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 15 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 29.2 °C days and 24.7 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 4.6 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 31.3 °C and the coldest night fell to 21.8 °C, and the wettest single day dropped 32 mm — roughly 36% of the month's rain in one day.

This is the volatile part. July rainfall has ranged from 3 mm to 297 mm across the twenty years measured — a 294 mm spread around an average of 89 mm. The average is real but almost no individual July looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 80%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 29.4 °C in June, 29.2 here, 29.6 in August. Nothing about the timing within the month matters much. Rain is the thing that moves: August brings 5 days less of it, so pushing the dates later buys drier weather.

Daylight in July

Jakarta sits close enough to the equator that daylight barely moves all year — 11.8 hours in July, against a range of just 0.7 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 29 °C in July — warm enough that the water offers no relief from the heat. The sea peaks at 29.9 °C in May and bottoms out at 28.6 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Busy. Popular without being frantic; book the things you care about, improvise the rest.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in Jakarta versus nearby

If Jakarta is one option among several, the nearby comparison is worth making. Bandung is a better bet in July — 2.6 °C cooler, 3 days less rain. Bandar Lampung is close enough to be a coin toss — within a degree on temperature, 4 days less rain.

So: July works, with August the better month by 9 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Jakarta

See all twelve months in Jakarta, or where else to go in July.