Viana, Brazil experiences a warm and humid climate year-round. The summer months of January to March are hot, with temperatures often reaching the mid-30s Celsius, while April to May marks the beginning of autumn, bringing slightly cooler temperatures in the low teens to mid-30s Celsius range. As winter sets in from June to August, nights can be quite cool, dipping into single digits Celsius, but days remain mild in the high 20s to low 30s Celsius. Spring, from September to November, is warm and humid once again, with temperatures rising back into the mid-30s Celsius range. Overall, Viana's temperature fluctuations are relatively moderate, with minimal seasonal variation.