The months of October 2019 until the end of January 2020 were very rainy in São Jose dos Campos (23012´S, 45052´W) tropical Brazilian region. In the period from 10/14/2019 to 01/27/2020,the counting of gamma rays, neutrons and rainfall intensity in a tower at 25 meters high was monitored at every one-minute interval. This tower is located in a free area without electromagnetic interference from man on the site. The average rate of gamma radiation count between (0.2-10.0) MeV was 39000 counts / min. The average neutron count observed was 2 neutrons / min, between 25 eV to 10.0 MeV. The amount of net rainfall in the period was 461(mm) with variations in dry weather, fine, moderate and heavy rainfall throughout the monitored interval time. It can be seen in these measurements that the intense rains correlate very well with variations in the gamma rays and delayed of 4 to 5 days with the measured neutron intensities. This work gives possible explanations about this correlation based in in same site of rainfalls, gamma and neutron observations.