Precipitation is somewhere among others influenced by the climate, topography and turnover or wind current meeting. Therefore, the amount of rainfall varies by month and location of observation stations. Based on the results of over one year, rainfall in the SeruyanRegencyranged from 1.686,6 mm up to 1.831 mm. Based on the criteria for growing oil plantsstated by Djaenudin, et al., (2003) that the area of oil palm plantationin the SeruyanRegency classified beginfrom highly suitable (S1) till sufficientlysuitable (S2).For rainfall in this region show not as an obstacle, due to the range of 1750-3000 mm year -1. This is in line with research that has been done by Firmansyah (2014) that for the Central Kalimantan region has a fairly good rainfall in supporting the availability of water for palm trees.