Sandakan sits on the island of Borneo, where an equatorial climate brings heavy rainfall throughout the year with no pronounced dry season, though the northeast monsoon from November through February typically brings the heaviest totals.
On Sabah’s east coast, the city’s coastal lowlands are sensitive to both heavy rain and tidal effects. Many of Borneo’s towns sit along rivers that are the primary transport routes in the region, so a sustained heavy rain event upstream can raise water levels significantly downstream, making radar an important complement to river-level monitoring here. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map