This study, the relationship between rainfall variability at 26 stations of data of Thai Meteorological Department with Niño 3 for December, January and February (blue dot line), March, April and May (red dot line), June, July and August (solid line) and September, October and November ( purple line) show in Figure. It was found that, the most negative relationships between MAM season with Niño 3 is -0.57340 at station 14 (Bua Chum station) in Lop Buri shown in pink frame.