The ideal time to visit Vilangan Hills is between October to March, when the weather in Kerala is most pleasant. During this period, the climate is relatively cool and comfortable for trekking, picnicking, and sightseeing. The temperatures range from 20°C to 30°C, which is moderate and suitable for outdoor activities. The monsoon season, which typically occurs from June to September, brings heavy rainfall, making the trails potentially slippery and less safe for visitors. Also, the views can be obscured by mist and fog during monsoon months. Visiting outside the rainy season ensures clearer skies and better visibility, allowing you to fully enjoy the panoramic views of Thrissur and its surrounding areas from the hilltop.
Furthermore, the drier months from October to March coincide with several cultural festivals in Kerala, including the world-renowned Thrissur Pooram, usually held in April or May. While this is towards the end of the recommended visiting period, planning a visit around this time gives travelers the chance to experience this spectacular temple festival with its colorful processions, traditional music, and majestic elephant displays. Similarly, visiting during other regional festivals like Onam can enhance your travel experience with a taste of local traditions and customs. Regardless of the specific time you choose, ensure you're well-equipped with comfortable walking shoes, a hat, and plenty of water to stay hydrated during your exploration of Vilangan Hills.