Vigan's climate is characterized by mild winters and hot summers, with temperatures varying slightly throughout the year. The coolest months are January and December, with average temperatures ranging from 17°C to 35°C. Spring-like conditions prevail in March and April, while May marks the beginning of a warm summer season. Temperatures remain relatively consistent during the wet season, which typically occurs from June to October, with July being one of the hottest months. As the dry season sets in around November, temperatures again drop slightly before rising once more towards the end of the year.