Quick answer
Poson Poya, on the June full moon, is Sri Lanka's second-most important Buddhist festival, commemorating the introduction of Buddhism to the island in the 3rd century BCE by the monk Mahinda. The focus is Mihintale, near Anuradhapura, where Mahinda is said to have met King Devanampiya Tissa; white-clad pilgrims climb its granite stairway to the summit stupas. Like Vesak, it features lanterns, pandals, and dansala free-food stalls, and the date shifts yearly with the lunar calendar.
Key takeaways
- Poson falls on the June full-moon Poya day; the date moves each year.
- It marks the arrival of Buddhism in Sri Lanka via the monk Mahinda.
- Mihintale, near Anuradhapura, is the heart of the festival.
- Pilgrims in white climb Mihintale's stairway to the summit stupas.
- Expect lanterns, pandals, and dansala stalls, as at Vesak.
What Poson commemorates
Poson remembers a turning point in Sri Lankan history: the meeting at Mihintale between the missionary monk Mahinda (son of the Indian emperor Ashoka) and King Devanampiya Tissa, which led the island to embrace Buddhism. It's a festival of origins, and Anuradhapura—the ancient capital—is its spiritual centre.
Coming a month after Vesak, Poson shares its luminous, devotional character but adds a great pilgrimage.
The pilgrimage to Mihintale
Mihintale's broad granite stairway climbs through forest to a cluster of stupas, meditation caves, and viewpoints over the sacred landscape. On Poson, it fills with white-clad pilgrims ascending in devotion, and the whole hill glows after dark.
Climb early or late to avoid the heat, dress modestly, remove shoes on sacred platforms, and move gently among the worshippers.
- →Mihintale's stairway leads to summit stupas and caves
- →Pilgrims climb in white on Poson Poya
- →Go early or late to beat the heat; cover shoulders and knees
- →Pair with Anuradhapura's sacred city nearby
Lanterns, pandals, and dansala
Like Vesak, Poson brings out paper lanterns, illuminated pandals telling Buddhist stories, and dansala stalls handing out free food and drink to all. Anuradhapura and the surrounding towns are especially atmospheric after dark.
Visitors are warmly welcome to receive dansala—accept graciously and don't waste it.
Experiencing Poson
Confirm the year's date (lunar calendar) and expect crowds at Mihintale and Anuradhapura, plus a public holiday. Basing in nearby Habarana or the sacred city lets you join the evening atmosphere without long transfers.
Lankan Stays & Trails can time a Cultural Triangle leg to Poson with a respectful Mihintale visit. See our Anuradhapura guide, or share your dates.
Frequently asked questions
When is Poson Poya in Sri Lanka?
Poson falls on the full-moon Poya day in June, so the exact date shifts each year with the lunar calendar. It's a national holiday and the second-most important Buddhist festival after Vesak.
What does Poson celebrate?
Poson commemorates the arrival of Buddhism in Sri Lanka in the 3rd century BCE, when the monk Mahinda met King Devanampiya Tissa at Mihintale and the island embraced the faith.
Why is Mihintale important at Poson?
Mihintale is where Mahinda is said to have introduced Buddhism to the Sri Lankan king. On Poson, thousands of white-clad pilgrims climb its granite stairway to the summit stupas, making it the heart of the festival.
Where is the best place to experience Poson?
Anuradhapura and Mihintale, the festival's spiritual centre, offer the most devotional and atmospheric experience, with lanterns, pandals, and dansala stalls in the surrounding towns.
How is Poson different from Vesak?
Both are major Buddhist full-moon festivals with lanterns and dansala. Vesak (May) marks the Buddha's birth, enlightenment, and passing; Poson (June) marks the arrival of Buddhism in Sri Lanka, centred on the Mihintale pilgrimage.
Does Lankan Stays & Trails plan trips around Poson?
Yes—we can time a Cultural Triangle leg to Poson with a respectful Mihintale and Anuradhapura visit. Share your dates and we'll confirm the festival timing.