Diagram by Greece Trips. Free to reuse with credit - CC BY 4.0.
Two things decide whether the visit works: the time of year, and how you behave when you are there.
The season is narrow
The moths mass in the valley in high summer, broadly the peak weeks of the season, and they are not there in spring or autumn. Arriving in May or October means a beautiful shaded gorge walk with running water and almost no moths, which is a perfectly good morning as long as it is the one you expected.
If the moths are the reason for your visit, check the current position locally before you go rather than trusting a fixed set of dates.
Do not make them fly
This is the part that matters and the part tour groups get wrong. The moths do not feed as adults; they live on stored reserves. Every time they are startled into flight they burn energy they cannot replace, and repeated disturbance across a season costs the population.
So: no clapping, no whistling, no shaking branches, no flash. It is asked of every visitor at the entrance and it is worth taking seriously. The population here has been under pressure for years, which is why the site is managed and ticketed.
What the walk is like
The path climbs the gorge on boardwalks and bridges, from the lower entrance up towards a monastery at the top. It is shaded, cool, and noticeably fresher than the coast, which by itself is a relief in August.
Allow an hour or so for the full climb and return at an easy pace. There are steps and slopes; the lower section is the gentlest and holds most of the moths.
Fitting it in
Petaloudes is in the hills behind the west coast, a straightforward drive from Rhodes Town or from the Ixia and Ialyssos strip. It pairs well with the hilltop site at Filerimos on the same side of the island, and it is a morning rather than a day.
Last checked August 2026. Season, access and rules change - see our editorial policy.
Common questions
When can you see the butterflies at Petaloudes?
They mass in the valley in the high-summer weeks. Outside that window the gorge is a shaded walk with few or no moths, so check locally before planning a trip around them.
Are they butterflies or moths?
They are Jersey tiger moths, despite the name of the valley.
Why should you not make noise in the Valley of the Butterflies?
The adults do not feed and live on stored energy. Startling them into flight burns reserves they cannot replace, and repeated disturbance harms the population.
How long does the Valley of the Butterflies take?
About an hour for the walk up the gorge and back at an easy pace, longer if you continue to the monastery at the top.
Is the Valley of the Butterflies worth it out of season?
As a cool shaded gorge walk, yes. As a butterfly experience, no, and it is better to know that before the drive.
Next
Read things to do in Rhodes, Rhodes Old Town, or where to stay in Rhodes.