Indonesia has two seasons, wet and dry, with no temperature extremes between the two seasons. For most of the country, the dry season falls between April and October and the wet season between November and March. However, this cycle can be unpredictable.
Although cooler climate types can be found in mountainous regions of Indonesia at 1,300 to 1,500 meters above sea level, Indonesia’s climate is almost entirely tropical, dominated by the tropical rainforest climate found in every major island of Indonesia, followed by the tropical monsoon climate in other areas, and finally the tropical savanna climate which can be found in isolated locations. Overall, the average temperature in most regions is between 20˚-36˚C depending on the region’s altitude.
For more information regarding Indonesia’s weather, please refer to https://www.accuweather.com/en/id/indonesia-weather