Weather and climate in Jakarta, Indonesia: monthly averages and best time for stargazing

Best for stargazingAug, Sep, JulMost clear, dark hours

Warmest monthOctoberAverage high 31°C

Coolest monthAugustAverage low 24°C

Wettest monthFebruary383 mm on average

What the weather is like in Jakarta

The warmest month in Jakarta is October, with average highs of 31°C. The coolest is August, when nights average 24°C. About 2,199 mm of rain and snow falls in a typical year, most in February and least in August.

Skies are clearest in August (52% average cloud cover) and cloudiest in December (93%). Combining cloud with the length of truly dark nights, August, September, July offer the most clear, dark hours for stargazing.

Clear, dark hours per night

0.9 Jan

0.9 Feb

1.4 Mar

1.9 Apr

2.8 May

3.6 Jun

4.0 Jul

4.7 Aug

4.2 Sep

2.5 Oct

1.1 Nov

0.6 Dec

Hours of full astronomical darkness in mid-month, multiplied by the average share of clear sky. A rough guide to how much good observing time a typical night offers.

Monthly averages

Month	High	Low	Precipitation	Cloud cover	Humidity	Wind	Dark hours
January	29°C	25°C	353 mm	90%	84%	11 km/h	9.1 h
February	28°C	25°C	383 mm	90%	86%	10 km/h	9.3 h
March	29°C	25°C	248 mm	85%	84%	9 km/h	9.6 h
April	29°C	26°C	197 mm	80%	83%	8 km/h	9.7 h
May	30°C	26°C	141 mm	71%	83%	8 km/h	9.7 h
June	29°C	25°C	95 mm	63%	82%	8 km/h	9.7 h
July	29°C	25°C	89 mm	59%	80%	9 km/h	9.7 h
August	29°C	24°C	49 mm	52%	78%	9 km/h	9.7 h
September	30°C	25°C	66 mm	56%	76%	9 km/h	9.6 h
October	31°C	26°C	134 mm	73%	76%	8 km/h	9.4 h
November	30°C	26°C	198 mm	88%	79%	7 km/h	9.1 h
December	29°C	25°C	244 mm	93%	83%	10 km/h	9.0 h

Climate averages: NASA POWER, 2001–2025, for the grid area around -6.00, 106.88 (about 50 km across). High and low temperatures are estimated from the monthly mean and the average daily range. Hills, coasts and cities can differ from the area average. Sources and methods.