Summarizing the weather in Indonesia is complex due to its vast expanse and the significant climatic variations between regions. Indonesia, comprising 17,508 islands, can be broadly categorized into the western and central islands and the eastern islands (situated to the east of the Wallace Line).
For the western and central Indonesian islands like Bali, Java, Lombok, and Komodo, the dry season from May to September is the best time to visit, while the wet season occurs from October to April with short yet intense rainfall.
On the other hand, the eastern islands such as Sulawesi, West Papua, Raja Ampat, and the Moluccas Islands typically peak in weather conditions between March and May and again in October. Temperatures across the region average around 28°C year-round.