Castilla, Philippines experiences a warm and dry climate year-round. The temperatures remain relatively consistent throughout the year, with average highs ranging from 26°C in January to 35°C in May and June. March to October is the hottest period, with temperatures often reaching above 33°C during these months. The cooler months are December to February, but even then, temperatures rarely dip below 23°C. Overall, Castilla's climate is characterized by a long dry season, with minimal rainfall throughout the year.