The best time to visit is the dry season from March to September. The park receives heavy rainfall during the northeast monsoon (November to February), when trails can flood and river levels make boat travel unreliable. Even in the dry season, expect daily rain showers — this is a tropical rainforest.
April and May see the most visitors, but the park is large enough that it rarely feels crowded on the trails. Weekends bring more day-trippers to the canopy walkway.