Climate variabilities in the municipality of camalau - Paraiba, Brazil

The objective is to study the climatic variability of the elements, maximum temperature, minimum temperature, average temperature, thermal amplitude, relative humidity, wind intensity, evapotranspiration, evaporation as well as to evaluate the estimate of the climatological water balance for the municipality of Camalaú, Paraíba. Monthly and annual precipitation data, referring to the 52-year period of observed data (1962-2014), from which graphs of annual variations, monthly and seasonal averages of precipitation were obtained to satisfactorily represent the region's rainfall regime. Maximum, average, minimum temperature and thermal amplitude were estimated by the “Estima_T” software, as well as relative air humidity, wind intensity, evapotranspiration and evaporation. The fluctuations of the minimum air temperature resulted from the synoptic systems acting in the rainy season and the dry season, as well as from the impacts on the environment when in the fluctuations, they may be related to the factors that cause inter-regional pluviometric indices. The variability of relative humidity is linked to cloud cover and thermal fluctuations in the study area.