Indonesia
Weather locations in Indonesia
Choose a location in Indonesia to view its available forecast products.
Indonesia illustrated weather map
24 mapped locations
Only locations with a verified coordinate are marked. The complete location list is below.
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Climate of Indonesia
Country climate guideIndonesia is the largest archipelago in the world, some seventeen thousand islands straddling the equator between roughly 6°N and 11°S. It is a country of volcanoes and young mountain ranges rising from the Indian and Pacific plates, and sitting astride the equator means the sun is nearly overhead all year. Rain arrives through two monsoon systems that meet across the archipelago, so while one half of the country is soaked the other is dry, and the wet season simply swaps ends about every six months.
Main climate types
The dominant type is tropical rainforest climate, hot and wet in every month, covering the lowlands of Sumatra, Borneo, Sulawesi, the eastern islands and much of Papua. Because the mountains rise steeply there is a strong altitudinal gradient: Jakarta at sea level averages about 27 °C, while Bandung at 700 metres is around 19 °C.
Temperatures
Daily temperatures vary far more than monthly means. Jakarta averages about 27 °C in January and about 26 °C in July, with highs of 30 °C to 32 °C normal, so the city has no break from the heat. Inland and at altitude the contrast is strong: Yogyakarta and Bandung sit about 6 °C to 8 °C cooler, and the Papuan highlands average in the mid-20s °C. In the mountains of Sumatra and Java, nights near 15 °C are common.
Rainfall
Totals are very high across most of the country. Jakarta takes about 1,750 mm a year, with January usually the wettest, and Medan in north Sumatra around 2,700 mm. The wet season follows the sun: in Jakarta and the northern half of the archipelago rain is heaviest around December to February, while in Java, Bali and the southern islands the peak comes in the same months but the dry season runs from June to September. Southern Java takes about 1,200 mm to 1,500 mm.
When to go
The dry season is the time to travel, but the islands you pick decide when. For Java, Bali and the Lesser Sundas go between June and September; for Jakarta, Sumatra and Borneo, go between December and February. Between them the inter-monsoon months bring heavy but brief afternoon storms.