Photo from Kos

Greece · Kos

Kos: a narrow island, a long shore, an old art of healing

Forty-two kilometres long and ten across: in the east a ridge close to the southern shore, and below it a plain of grain, olives, figs, almonds and vines. Near Kos town lies the Asklepieion; Hippocrates taught and practised on the island.

Busiest week

JulyCrowd level 100

Wk 30 · 1,933,409 overnight stays

Quietest weeks

JanuaryCrowd level 0

Wk 1–3 · measured against the region's own year, not against other regions

Sweet spot

NovemberCrowd level 2–19

Wk 44–46 · quietest while the weather still holds

Warmest month

30 °CComfort 68

July · around 1 mm of rain in the month

The overnight-stay figures come from a statistical area that this destination shares with Rhodos and Santorin. They cover the whole area, not Kos on its own.

Kos is the third-largest island of the Dodecanese at 287.6 square kilometres, and narrow with it: 42 kilometres long and ten across. Near Kos town lies the Asklepieion; Hippocrates taught and practised on the island. Against Rhodes it is a little over a fifth the size, and the Knights bought Kos from the Genoese in 1309, while securing Rhodes as a territory of their own from 1306.

Read more further down

Click a week. The panel on the right explains why it is busy or quiet.

Weather profile

Weather comfort is an absolute scale (0 = poor, 100 = ideal) and a second axis next to the season-relative crowd level.

JanuaryØ 0
FebruaryØ 0
MarchØ 2
AprilØ 17
MayØ 51
JuneØ 78
JulyØ 93
AugustØ 96
SeptemberØ 72
OctoberØ 37
NovemberØ 5
DecemberØ 1
Colour = season-relative crowd levelBar = weather comfort (Sun & warmth), absolute 0–100

Why this week?

Crowd level19/100 · fairly quiet
quietbusy
Weather comfort56/100 · Sun & warmth

-47 % versus the region's annual average.

Contributing months
October (47 %) · November (53 %)
Overnight stays/week
386,256
School-holiday pressure (source markets)
23 % of source markets on school holidays · +6 % crowding from holidays
Main source markets
Greece (21 %) · United Kingdom (20 %) · Germany (19 %) · 82% of guests modelled
Region range
17,855–1,933,409 (avg 730,371)
Base years
2022, 2023, 2024 (excluding 2020, 2021)

v1: Crowd-Score aus der Eurostat-Basisschicht (Übernachtungen), moduliert vom Schulferien-Druck der Quellmärkte, region-spezifisch gewichtet mit dem Quellland-Mix. Season-relativ zur Region. Event-Schichten folgen.

Pre-filled with the next date in week 44.

DestinationKos
Travel datesPick a week in the calendar

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Photos: Johny Goerend · reisetopia · Dino Reichmuth on Unsplash

The year as a table to read and to cite: crowd level for every month, plus weather comfort and temperature from the climate normals.

Crowd level, weather comfort and temperature in Kos by month – crowd score 0–100, season-relative to the region's own annual peak
MonthCrowd level0–100, season-relativeWeather comfort0–100, profile “mild”Avg temperature
January04411 °C
February05212 °C
March26614 °C
April178618 °C
May519322 °C
June788227 °C
July936830 °C
August966930 °C
September728327 °C
October379022 °C
November57518 °C
December15113 °C

The crowd level is season-relative: 100 is the annual peak of Kos itself, not the busiest destination in Europe. The figures say when it is quiet here — not where it is quieter than elsewhere.

Weather comfort 0–100 from the climate normals, profile “mild” – the same profile as the recommendation above, not the selection in the calendar. A “–” means the data for that month is missing.

Index 2.0 · As of 25/08/2026

Three windows from the model: first whether the weather suits the region, then how busy it gets.

Recommended

Wk 44–46

The quietest stretch among this region's best weather weeks: crowd level around 8 out of 100, weather comfort near 80.

Crowd level
2–19
Comfort
76–84
Plan this period
Good alternative

Wk 13–15

A second option, also with usable weather: crowd level around 12, weather comfort near 80.

Crowd level
5–17
Comfort
75–85
Plan this period
Avoid

Wk 30–32

The region's peak: crowd level around 99 out of 100. Only if the dates are fixed.

Crowd level
98–100
Comfort
66–67

How full the accommodation is here, measured against Europe – on the only measure on which two travel regions can be compared.

Bed occupancy in Kos
34.3

per cent of bed places, annual mean

European median
23.1

per cent of bed places, annual mean

Furthest from the median: February, at <0.1× the value. Closest to the median: April, at 0.8× the value.

Mean across 12 months, weighted by their weeks. This occupancy compares travel regions with one another. The crowding in the table above compares Kos with itself. The two measures are never combined.

Average temperature with day/night range and precipitation across the twelve months.

  • Avg temperature
  • Day/night range
  • Precipitation
0310175Jan: 150 mmFeb: 68 mmMar: 67 mmApr: 25 mmMay: 14 mmJun: 4 mmJul: 1 mmAug: 1 mmSep: 5 mmOct: 36 mmNov: 100 mmDec: 168 mmJan: Ø 10 °C · Day 11 °C · Night 9 °CFeb: Ø 11 °C · Day 12 °C · Night 10 °CMar: Ø 13 °C · Day 14 °C · Night 12 °CApr: Ø 16 °C · Day 18 °C · Night 15 °CMay: Ø 21 °C · Day 22 °C · Night 19 °CJun: Ø 25 °C · Day 27 °C · Night 24 °CJul: Ø 29 °C · Day 30 °C · Night 27 °CAug: Ø 28 °C · Day 30 °C · Night 27 °CSep: Ø 25 °C · Day 27 °C · Night 24 °COct: Ø 21 °C · Day 22 °C · Night 20 °CNov: Ø 17 °C · Day 18 °C · Night 16 °CDec: Ø 12 °C · Day 13 °C · Night 11 °CJanFebMarAprMayJunJulAugSepOctNovDec°Cmm
Monthly climate values
MonthAvg temperature (°C)Day avg (°C)Night avg (°C)Precipitation (mm)
Jan10119150
Feb11121068
Mar13141267
Apr16181525
May21221914
Jun2527244
Jul2930271
Aug2830271
Sep2527245
Oct21222036
Nov171816100
Dec121311168

The band shows mean daytime to nighttime temperature. Precipitation shown as monthly total (mm). Typical monthly value (climate normal), not a forecast.

How much sun a typical day delivers, month by month, expressed as hours of full midday sun.

Very sunny
≈ 5.3 h of full midday sun per day, annual average
Jun
Sunniest month
0.08.0Jan: ≈ 2.7 h full midday sun/dayFeb: ≈ 3.7 h full midday sun/dayMar: ≈ 5.1 h full midday sun/dayApr: ≈ 6.5 h full midday sun/dayMay: ≈ 7.3 h full midday sun/dayJun: ≈ 8.0 h full midday sun/dayJul: ≈ 7.9 h full midday sun/dayAug: ≈ 7.1 h full midday sun/daySep: ≈ 5.9 h full midday sun/dayOct: ≈ 4.4 h full midday sun/dayNov: ≈ 3.0 h full midday sun/dayDec: ≈ 2.4 h full midday sun/dayJanFebMarAprMayJunJulAugSepOctNovDech
Sun by month
Month≈ h of full midday sun per day
Jan2.7
Feb3.7
Mar5.1
Apr6.5
May7.3
Jun8.0
Jul7.9
Aug7.1
Sep5.9
Oct4.4
Nov3.0
Dec2.4

Basis: mean daily solar irradiance in kWh/m²/day; 1 kWh/m² is roughly one hour of full midday sun (1,000 W/m²). Not the same as measured sunshine duration. Typical monthly value (climate normal), not a forecast.

Destination airports of Kos and every European departure airport with a direct connection to them.

Destination airports

Select a destination airport to see the direct departure airports.

“Directly reachable” means a direct connection exists according to our sources. We do not show a live timetable. Availability and flight days can vary by season and airline.

Kos lies off the coast of Asia Minor and is the third-largest island of the Dodecanese, after Rhodes and Karpathos. Its shape is narrow: 42 kilometres end to end, ten across, 287.6 square kilometres in all. In the east of the island a narrow ridge runs close to the southern shore, topped by the Dikeos at 846 metres; the plain below it is farmed: grain and vegetables, along with olives, citrus, figs, almonds and vines.

Near Kos town stands the Asklepieion: found in 1901, uncovered within three years, stepped across hillside terraces and joined by stairways of marble. It stands for the medicine of the island: Hippocrates taught and practised here. An oriental plane bearing his name stands on the Platia Platanou in Kos town; the attribution to him is tradition.

Also in town, on a narrow tongue of land beside Mandraki harbour, stands the Hospitaller fortress of Neratzia. Inland sits the castle of Antimacheia, raised by the same order in the fourteenth century and notably without towers; the round bastion in its gate came later, early in the sixteenth. On the northern flank of the island's mountains lies Palio Pyli, a deserted village with a castle.

A salt lake between Marmari and Tigaki usually dries out in high summer; in spring and autumn flamingos often stand there. Some eight kilometres east of Kos town, a thermal spring surfaces at the shoreline itself.

The settlements differ in character: Zia is a mountain village set high in the island's middle, Kardamena the only resort on the south coast and largely British in its clientele, Kefalos a village above a bay three kilometres wide and some 40 kilometres from town, Platani a village near Kos town with five restaurants around its square. Among local dishes is stifado made with Tintenfisch.

Set against Rhodes, the difference is above all one of scale and of imprint: Kos covers 287.6 square kilometres, Rhodes 1,401.5, close to five times as much. Both islands carry Hospitaller castles, but the knights came by them differently: Rhodes they secured by treaty from 1306 as a territory of their own, while Kos they bought from the Genoese in 1309. Their antiquity points in different directions too: Rhodes carries three ancient cities, and the Colossus stood there until 227 BC; Kos has its Asklepieion.

Short answers on timing, weather and getting there, all from the data on this page.

When is the best time to visit Kos?

The best time to visit Kos is November (Wk 44–46): it is the quietest stretch among the region's best weather weeks – crowd level around 8 out of 100, weather comfort about 80 out of 100.

When is Kos quietest?

January (Wk 1–3) is the quietest time in Kos. Crowd levels there sit at 0 out of 100, the lowest across the year.

When is Kos busiest?

Kos is busiest in July (Wk 30) with around 1,933,409 overnight stays in the peak week.

What is the weather like in Kos and when is it warmest?

It is warmest in Kos in July with an average of 30 °C.

How do you get to Kos?

Kos is reachable via 12 destination airports with direct flights, including Rhodes Airport (RHO), Kos Airport (KGS) and Santorini International Airport (JTR).

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Every provenance note on this page, collected in one place.

Cover photo
Photo by Johnny Africa on Unsplash
Cover video
Video by Dimitris Mourousiadis on Pexels
Crowding figures
Index 2.0 · As of 25/08/2026. v1 approximation, calculated from Eurostat overnight stays. Day tourism and cruises (Venice, Dubrovnik …) are still missing, so we show these destinations as quieter than they are. The crowd score is a model-based forecast, not a measurement.
Climate data
Generated using Copernicus Climate Change Service information 2025.
Reachability

Data sources: direct connections from Wikipedia (“Airlines and destinations”, licensed CC BY-SA 4.0, aggregated and modified by us), cross-checked with Eurostat, Destatis and the UK Civil Aviation Authority; airport data from OurAirports (Public Domain). The derived connection data is licensed under CC BY-SA 4.0.

Data as of: September 2026

Region text
Text by HolidayHub, written from Wikivoyage „Kos“ (1751607) · Wikipedia „Kos“ (270178170) · Wikidata Q187027. Wikivoyage and Wikipedia are licensed CC BY-SA 4.0, Wikidata CC0.
Data basis
All figures are approximations derived from open data (crowd level from Eurostat overnight stays, climate from Copernicus/ERA5-Land), not measurements.