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Book your island vacation on Kos now - September & October 2025 from Cologne/Bonn & Düsseldorf
Kos, the turquoise paradise of the Aegean Sea, seduces visitors with idyllic beaches, ancient ruins, and a charm that captivates everyone who visits. Kos is not only popular with sun worshippers, but also with culture lovers thanks to its rich history and lively old town. The relaxed atmosphere and Mediterranean joie de vivre make every stay unforgettable.
Dreamlike weather
Plenty of sunshine with temperatures above 30 degrees Celsius.
Historical heritage
Ancient cities and archaeological sites, such as the famous Asklepion sanctuaries and the ancient agora.
Beautiful beaches
With golden sand and crystal clear water. Here you can sunbathe, swim and relax.
Warm and welcoming comunity
The locals are known for their hospitality and friendly nature.
When is the best time to visit Kos?
Kos enjoys mild weather, especially in May, June, September, and October, and offers less crowded beaches compared to the high season in July and August. This is also an ideal time to explore cultural attractions and enjoy outdoor activities before the cooler and rainier winter months set in.
May - October
Beach and swimming
The water temperatures are at their highest during the summer months from June to September, offering the perfect opportunity to enjoy the crystal-clear waters around the island. Air temperatures range from 25 to 35 degrees Celsius.
March - May
City exploration and hiking
The best time for city exploration in Kos is from March to May. Temperatures range between 15°C and 25°C, and the spring blossoms add extra charm to the island.
Sights and activities
In addition to its beautiful beaches, Kos also has other great highlights to offer.

Asklepion
The ancient Asklepion of Kos was once an important healing center of the Greek world. Medicine, religion and architecture were impressively combined here.

Neratzia Castle
The Neratzia Castle in Kos Town dates back to the time of the Knights of St. John. It is located directly on the harbor and offers impressive views as well as evidence of medieval fortress architecture.

Thermal Springs
The Embros thermal spring is located directly by the sea. The hot, mineral-rich water is said to have a relaxing effect and entices visitors to enjoy a natural wellness experience.
More must-sees and tips for Kos
In addition to the many sights and activities, you will find many other cultural, social, and culinary offerings.
Tzatziki
Tzatziki is a refreshing Greek starter made from creamy yogurt, grated cucumber, garlic and olive oil. Refined with fresh herbs, it goes perfectly with bread, meat or vegetables. Tzatziki is a light and aromatic treat, especially on hot days in Kos.
Saganaki
Saganaki is a popular Greek starter: a thick piece of cheese, usually kefalotyri or feta, is fried in a pan until golden brown and served with a squeeze of fresh lemon. Crispy on the outside, meltingly soft on the inside - a must for anyone who loves hearty flavors.
Baklava
Baklava is a traditional Greek dessert made from wafer-thin layers of dough, finely chopped nuts and sweet sugar syrup or honey. The small, crispy pieces have an intense flavor and are ideal for anyone looking for a sweet temptation after a meal.




Tzatziki
Tzatziki is a refreshing Greek starter made from creamy yogurt, grated cucumber, garlic and olive oil. Refined with fresh herbs, it goes perfectly with bread, meat or vegetables. Tzatziki is a light and aromatic treat, especially on hot days in Kos.

Saganaki
Saganaki is a popular Greek starter: a thick piece of cheese, usually kefalotyri or feta, is fried in a pan until golden brown and served with a squeeze of fresh lemon. Crispy on the outside, meltingly soft on the inside - a must for anyone who loves hearty flavors.

Baklava
Baklava is a traditional Greek dessert made from wafer-thin layers of dough, finely chopped nuts and sweet sugar syrup or honey. The small, crispy pieces have an intense flavor and are ideal for anyone looking for a sweet temptation after a meal.
Map of Kos
Flights to our top destinations
On Kos, you can expect a sun-kissed island climate with long, hot summers and a fresh sea breeze. Even in the fall, it remains pleasantly warm and dry - ideal for exploring the coasts, visiting historical sites or enjoying relaxing days on the beach.
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