...and more
In terms of precipitation, rainfall in Jakarta ranges from 7.0 - 15.1 inches per month. April is typically the wettest month, when rainfall can reach 15.1 in. July is typically the driest time to visit Jakarta when rainfall is around 7.0 in.
If weather is an important factor for your trip to Jakarta, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 75.2 F).