Viseu's climate is characterized by mild winters, with temperatures ranging from just above freezing to around 26°C in January. As the seasons progress, temperatures gradually rise, with spring bringing average highs of up to 28°C in March and April. Summer months are warm, with July and August experiencing highs often above 35°C, while autumn sees a slight cooling trend, with temperatures similar to those in spring. Winters are generally cool, with temperatures rarely dipping below freezing, but also not consistently mild like during the warmer seasons. Overall, Viseu's climate is quite moderate, with minimal extreme temperature fluctuations throughout the year.