The butterfly season in Cuc Phuong National Park usually takes place from late April to late May, sometimes extending into early June, especially for white butterflies. This is the period after humid spring rains, when warm temperatures and high humidity encourage butterflies to reproduce en masse. At this time, Cuc Phuong forest becomes vibrant with thousands of butterfly species, from yellow, white, and blue butterflies to rare species like swallowtails or swordtails.
- Time of year:
- April: Butterflies begin to appear, highlighted by a diversity of colors (yellow, green, white, swallowtail, swordtail...).
- May: The peak of the butterfly season, especially white butterflies with dense density covering the paths, creating the most magical landscape.
Note: Avoid going at the end of the season (after May) because the number of butterflies gradually decreases and the risk of heavy rain is higher.
- Time of day: Butterflies usually appear most in the morning, from 8:00 AM to 11:00 AM, when the sun comes up and butterflies fly out of the forest to warm up. The early morning time has gentle light, making it ideal for taking photos.
The butterfly phenomenon depends heavily on the weather. Butterflies will appear most after light rains and when the weather is sunny and beautiful. The butterfly season is usually quite short, lasting only about 2 - 3 peak weeks. Therefore, you should monitor information from Cuc Phuong National Park before departing.



