Climate in Indonesia

Indonesia has a highly diverse climate, with major differences between regions. Annual temperatures range from lows of -65°C in the coldest regions to highs of 29°C in the warmest areas. Annual precipitation ranges from 27mm in drier regions to 393mm in wetter parts of the country. Some regions receive significant snowfall, with up to 386cm annually, while other areas see little to none. The warmest areas are hot year-round while the coldest regions remain very cold, making Indonesia a country of sharp climate contrasts.

Temperature patterns across Indonesia vary by region, with distinct differences between areas. The Northeast is the warmest part of the country, with peak temperatures reaching 29°C and an annual average of 26°C. Cooler conditions are found in the Northwest, where winter lows drop to -65°C and an annual average of -45°C. This 71°C difference in annual averages between regions means travellers can experience vastly different conditions depending on which part of Indonesia they visit. Regional differences are most pronounced in winter, when temperatures across Indonesia can vary by up to 78°C between regions. For example, Tarakan in the North Kalimantan averages 26°C annually, while Ranai Kota in the Provinsi Kepulauan Riau averages -45°C.

Indonesia sees notable variation in rainfall across its regions, ranging from 27mm to 393mm per year. The Southwest receives the most rainfall, at approximately 393mm annually. The West is the driest, with around 27mm per year. Rainfall is distributed fairly evenly across the seasons, with no strong wet or dry period in most regions. The Southwest sees the most snowfall, with up to 386cm annually, while other parts of the country receive little to none. Travellers should pack rain gear when visiting wetter areas, while drier regions offer more favourable conditions throughout the year.