Hey,, The best time to visit Munnar is from October to May. The weather during this time is pleasant and ideal for sightseeing and outdoor activities. The temperature ranges from 10-20 degree Celsius during the peak winter months of December and January, making it perfect for a comfortable holiday. The monsoon season, which falls between June and September, is best avoided as the heavy rainfall can make it difficult to travel and enjoy the natural beauty of the place. The roads may also be blocked due to landslides, making it difficult to move around. Overall, the winter and early summer months are considered the best time to visit Munnar.