Rio Claro's climate is generally warm year-round, with temperatures varying slightly across the seasons. In winter, from June to August, temperatures drop significantly, often below freezing in July, but still moderate overall, averaging around 16-18°C. Spring and autumn are milder, with average highs ranging from 20-24°C, while summer months see warmer temperatures, occasionally reaching up to 38°C, but mostly averaging between 23-25°C. The coolest period is June and July, with the warmest being September and October. Overall, Rio Claro experiences a mild climate, ideal for outdoor activities throughout most of the year.