We have been on Naxos this august.
Paros and Naxos are quite different destinations. Naxos is
- much larger
- mountainous interior, some forests
- much more to see and do except for windsurfing - which is a massive bonus when wind is less than expected.
- much less overloaded with tourists (both locals and TUI hostesses say thgis) -> hence Naxos is more authentic
There is a strait of only 10 km wide separating both islands, you can see the houses opposite island from the beach.
The wind gets accelerated between both Islands. New golden beach (Paros) is cross-offshore. Mikri Vigla (Naxos) is sideshore, the southern (left hand) of the bay is 45 degrees onshore.
The whole western coast of Naxos is good for windsurfing and has brilliant beaches.
Naxos is less overladen with tourists. At least, that is what the locals said to me.
Plaka beach is much nicer than the busier beaches nearer to Chora (main town). It has 4 km of uninterrupted fine sand.
Agiassos beach is beautiful as well. End of the world feeling.
maps.app.goo.gl/aUpZvfZRyLHZWXxc8First picture is Koufonisia. Hard to believe it's real. You go there on a boat trip with snorkeling, boat leaves from Agia Anna harbour.
Second picture is sunset at Plaka beach. The island opposite is Paros. We liked Plaka best.
The third picture is from the massive wildfires that happened this August. At night you could see the flames up to 15 meters high.
Be aware: the wildfires did massive damage at Paros. It will take decades to regrow.

