KosTravel Guide

Kos

Greece Area: 290 km² Time Zone: UTC+2
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Kos travel guide

The Asklepieion, Neratzia Castle and fast boats to Bodrum

In short

Kos is a Dodecanese island off the Turkish coast with long sandy beaches, a town full of open-air ruins and the Asklepieion, the healing sanctuary tied to Hippocrates. Visit from May to June or September to October. Allow four to seven days, with a hop to Nisyros or Bodrum. Prices are high, and many passports get 90 days under Schengen rules.

Close enough to Turkey that Bodrum is 25 minutes away by fast boat, Kos is the third largest of the Dodecanese and, after Rhodes, the most visited. The island is long and narrow, with sandy beaches on most of its coast and a main town where ancient ruins lie open between the modern streets.

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Key Facts & Stats:
Capital: Athens (capital of Greece)
Others Largest City: Bodrum is 25 minutes by catamaran; Kalymnos and Nisyros are short boat trips
Currency: Euro (EUR, €)
Time Zone: Eastern European Time, UTC+2 (UTC+3 in summer)
Major Language: Greek
Major Religion: Christianity (Greek Orthodox)

Explore Kos by theme

Find your kind of trip: 24 travel themes, each with the packages in Kos.

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Kos at a glance

The essentials first-time visitors ask about, in one place.

Best timeMay to Jun, Sep to OctWarm sea and comfortable cycling weather, without the summer wind and crowds
VisaSchengen rules90 days visa-free for many passports
CurrencyEuro (EUR, €)Cards widely accepted
LanguageGreekEnglish widely spoken in tourism
Time zoneUTC+2Daylight saving from late March to late October
CapitalAthensNearest airport for Kos: Kos Hippocrates (KGS)
Power230 V, 50 HzPlugs C and F
DrivingRight-hand trafficMountain and island roads are narrow
EmergencyCall 112Also 100 police, 166 ambulance; 1571 tourist police
Calling code+30Ten-digit numbers
WeekendSaturday and SundayShops and attractions stay open; offices close

Top things to do in Kos

Hippocrates' sanctuary, a Knights' castle, Roman houses, hot springs and plenty of sand.

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Best time to visit Kos

Month by month, so you can pick the weather and the crowds you want.

Full weather guide
Best overall
May - June, September - October

Highs of 25 to 29C and barely any rain, with the sea warm enough from June for long swims.

Summer
July - August

Highs around 30 to 31C and, on average, no rain at all; the north coast turns windy, which suits kitesurfers more than swimmers.

Winter
November - April

December and January bring roughly 176 to 215 mm of rain; many hotels close and boat links thin out.

Planning tip

Catamarans to Bodrum run all year, with more sailings in summer; carry your passport and check which Bodrum terminal your boat uses.

Packages in Demand

A Journey to Remember

Tours, activities and day trips in and around this destination, with the details you need before booking.

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Getting there

Airport buses, Piraeus ferries and Bodrum boats

Kos Hippocrates airport (KGS) sits inland near Antimachia, mid-island, with flights from Athens and summer charters from across Europe; KTEL buses leave the terminal for Kos town and the west. Ferries arrive from Piraeus and the Dodecanese, and boats cross from Bodrum. KTEL buses leave from the terminal in two directions: east to Kos town by way of Mastichari, and west to Kefalos. Taxis queue outside arrivals and are the only door-to-door option, though the minimum charge is steep even for the five-minute hop to Mastichari. By sea, the harbour in Kos town takes daily ferries from Piraeus as well as boats from Rhodes, Patmos and Leros. Kalymnos is linked several times a day, and Santorini and Syros a few times a week in season. From Turkey, small foot-passenger catamarans cross from Bodrum in about 25 minutes.

Airport bus
KTEL to Kos town via Mastichari, or west to Kefalos; times on the KOS KTEL timetable
Airport taxi
Door to door, with a high minimum charge even for nearby Mastichari
From Piraeus
Daily ferries into Kos town harbour, a long sailing from the mainland
From Bodrum
Foot-passenger catamarans all year, more often from May to October; about 25 minutes
  • Some boats use Bodrum's cruise terminal, several kilometres south of the marina, so allow for a taxi on the Turkish side.
  • Carry your passport for any Bodrum crossing; it is an international border with checks at both ends.

Know before you go

What makes Kos worth the trip, and what catches visitors out.

Why travelers love it

  • The Asklepieion, terraced on a hillside with views across to Turkey.
  • The Casa Romana, a Roman house with its mosaics restored.
  • Bathing at Therma, where hot spring water meets the sea.
  • Sunset from Zia, high on the island's mountain slopes.
  • A day trip to Bodrum by catamaran.

Good to know

  • Airport taxis are pricey for short trips; check the bus timetable first.
  • The north coast is windy in high summer, good for kitesurfers but choppy for swimmers.
  • Some Bodrum boats land at the cruise terminal, several kilometres south of Bodrum marina.
  • Many businesses close in winter, from November to April.

Trip fit

Beaches
Culture and heritage
Ease of getting around
Nightlife
Family friendly
Value for money

BookingMentor editorial ratings out of 5, based on a first-time visitor's experience.

Weather in Kos, month by month

Tap a month to see what to expect. Figures are long-term averages for Kos Sewage Plant weather station.

Good timeBest time
Bar: average low to high temperatureRainfall
May to Jun, Sep to OctKos town, Asklepieion, Kefalos BayWarm days and calmer resorts.
Jul to AugTigaki, Marmari, ThermaHot, windy and busy; swim early and cycle in the evening.

Climate figures are approximate long-term averages for Kos Sewage Plant weather station (http://penteli.meteo.gr/stations/kos/, via Wikipedia).

Cycling between the agora, Neratzia Castle and the Asklepieion

Rent a bike on your first morning in Kos town and ride the flat streets between the ruins: the Ancient Agora by the harbour, the walls of Neratzia Castle, built by the Knights of Saint John, and the Asklepieion, the healing sanctuary on the hill south-west of town. Ask locally whether the castle interior has reopened.

Start at the Ancient Agora by the harbour, walk round the walls of Neratzia Castle, built by the Knights of Saint John to guard the port (the interior was shut after the 2017 earthquake, so ask locally whether you can go in), then spend the late morning in the Archaeological Museum with the statue of Hippocrates and the Casa Romana mosaic. After lunch, see the Casa Romana itself and the Roman Odeon, both a few minutes apart, and finish with an evening walk along the harbour.

On day two, cycle or take the bus out to the Asklepieion early, before the heat builds, and climb its terraces for the view across the strait to Turkey. Spend the afternoon at Therma on the southeast coast, soaking in the pools where hot spring water spills into the sea. Late in the day, drive up to Zia on the mountain slopes for sunset and dinner, and come back down to town in the dark.

Pita gyros, krasotyri and village tavernas on Kos

The cheapest meal on Kos is a pita gyros from almost any snack bar in town. For dinner, Mummy's Cooking near Dolphin Square serves family dishes of the day, and in the hill villages tavernas offer krasotyri, the local cheese aged in wine, with grilled meats and island salads.

The cheapest meal on the island is the one locals grab between errands: a pita gyros, sold by almost every snack bar and taverna in Kos town. For a sit-down dinner, Mummy's Cooking on Bouboulinas, near Dolphin Square, is a family taverna where the son of the house steers you through the dishes of the day, and its moussaka is the reason many people come back.

Outside town the better tables are in the villages. Ampeli in Tigaki is a traditional taverna a short walk back from the beach, Lofaki sits at Agios Nektarios about 4 km south of town, and the Watermill of Zia pairs a mountain setting with the sunset crowd. Look out for krasotyri, the island's cheese matured in wine, and order fish where the boats land, at the little harbours of Mastichari and Kardamena. In the resort strips of Tigaki and Kardamena, menus lean towards British and German holiday food, so walk a street back from the beach before choosing.

Ferries from Kos to Kalymnos, Nisyros and Bodrum

Kos is a good hub. Small ferries from Mastichari reach Kalymnos about every two hours for a day around Pothia harbour, boats from Kardamena run to Nisyros and its steaming volcano crater in high season, and Bodrum in Turkey is a short crossing from Kos town; bring your passport.

Kos works well as a hub. From Mastichari, near the airport, small ferries leave for Kalymnos about every two hours; the sponge-diving island is close enough for a day of lunch and a walk round Pothia harbour. In high season, daily boats sail from Kardamena on the south coast to Nisyros, where you can walk down into the steaming crater of its volcano. Go early, as the crater floor gets hot by midday.

For Turkey, foot-passenger catamarans cross to Bodrum all year in about 25 minutes, so a day trip to the Castle of Saint Peter is easy either way. Some summer boats land at Bodrum's cruise terminal, several kilometres south of the marina. Carry your passport. Longer routes link Kos town daily with Rhodes, Patmos, Leros and Piraeus, and a few times a week with Santorini and Syros.

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About this guide

How we research our Kos travel guide

For Kos we use the island's website and Visit Greece, and we check Neratzia Castle access after the 2017 earthquake repairs and the ferry links to Kalymnos, Nisyros and Bodrum each season.

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Fact-checked by the bookingMentor Travel Desk Reviewed · Updated when rules or prices change

Checked against trusted sources:
Official website of KosVisit GreeceUNESCO World Heritage Centre

See all 3 sources
  1. Official website of Kos
  2. Visit Greece (official tourism site)
  3. UNESCO World Heritage Centre: Greece

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Frequently Asked Questions (FAQs)

Quick answers to the questions travelers ask most before visiting Kos.

Getting there

Yes, the route to Kos town runs via Mastichari, and a second line heads west to Kefalos. Taxis are quicker, but their minimum fare is high even for very short trips.

General