The best time to visit Undara Volcanic National Park is during the dry season, which runs from May to September.During these months, the weather is typically mild and sunny, with cooler temperatures and lower humidity. This makes exploring the lava tubes and walking trails much more comfortable. It's also outside of the wet season, so you won't encounter heavy rainfall that can sometimes affect access or tours.This period is ideal for couples and families looking to explore the natural wonders of the park without the heat and humidity of the summer months.