Best Time to Visit Koufonisia: Turquoise Waters and Sand

Koufonisia consists of two islands: Ano (inhabited) and Kato (uninhabited). Ano Koufonisi is renowned for having the most spectacular, turquoise waters in the Cyclades, reminiscent of the Caribbean.

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Best Months

June & September

Air Temp

27°C

Sea Temp

24°C

Peak Crowds

Extreme

The Capacity Crisis

Ano Koufonisi is tiny; you can walk from the port to the furthest beach (Pori) in 40 minutes. In July and August, the island reaches saturation point. Bicycles clog the roads, and towel space on the beaches is non-existent.

The Golden Window

To experience the true magic of Koufonisia, early June and late September are the only rational choices. The water is swimmable, the beach bars are open, but the crushing crowds are absent. Kato Koufonisi, accessible by a small boat, remains a sanctuary for campers and nudists even in high season.

Why Visit Koufonisia?

Spectacular turquoise lagoons and sea caves

Utterly walkable and bike-friendly island

Incredible fresh fish and local gastronomy

Pristine solitude of Kato Koufonisi

The famous "Devil's Eye" cove

Frequently asked questions about Koufonisia

What is the best time to visit Koufonisia?

The best time to visit Koufonisia is June, September. These months offer ideal weather (around 25°C), warm sea temperatures and fewer crowds than peak season. May, June, September are excellent shoulder-season options.

How crowded is Koufonisia in August?

In August, Koufonisia experiences Extreme crowd levels during the Greek holiday season and prime Meltemi winds. Prices are at their peak (€€€€).

Is Koufonisia windy during the summer?

Koufonisia is heavily influenced by the Meltemi winds between June and September. This keeps the island cool but can affect high-speed ferry crossings.

Seasonal Flow

PeakActive

July-August

Peak Crowds: Extreme€€€€

ShoulderIdeal

May, June, September

Peak Crowds: Moderate€€

OffQuiet

October-April

Peak Crowds: None€

Ferry Tickets

Book route to Koufonisia

Island Guide

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Best Time to Visit Koufonisia | 2026 Guide