When planning a visit to Borneo in Indonesia, it helps to know that temperatures typically range from 31°C (88°F) in July up to 33°C (91°F) during the peak of October. Our detailed climate overview is based on data from Samarinda, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
High temperatures are a constant in Borneo, especially in Samarinda, with average maximums staying above 31°C (88°F) all year long.
The hottest season always takes place in April, September and October.
Precipitation in Borneo varies considerably throughout the year. The wettest conditions occur in April with 325 mm (13 in) of rain, while August stays relatively dry with 167 mm (6.6 in).
