Climate change has brought changes to the characteristics of the rainfall, in general, there is a dynamic monthly rainfall cumulative annual rainfall. This study aims to detect the climate change presence or absence, identify the relationship of climate change to the nature of rainfall to wet (rainy), humid and dry months. This research was conducted in the East Kalimantan province. This study aims to detect the climate change presence or absence, identify the relationship of climate change to the nature of rainfall, rainy, humid and dry months. The research object observed was the condition and extent of forest cover along with the condition of climate elements "in situ" from 1977 to 2020. East Kalimantan Province experienced dry months in 1981-1985 and 1991-1995.