Kos in Fall
In fall (September, October and November), Kos sees average daytime highs around 21°C and overnight lows near 20°C, with 198 mm of rain over about 16 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 25°C in early September to 17°C by late November. The sky is clear or mostly clear about 73% of the time across fall, and the air most often feels humid.
Fall is Kos's 2nd-best season to visit on our travel score. For the whole year in context, see Kos's year-round climate.
- Avg daytime high
- 21°C
- 2nd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 198 mm
- 16 wet days
- Avg wind
- 22 km/h
- Travel score
- 7.9
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Kos in Fall
Over the season highs ease from about 25°C in early September to 17°C by late November.
A typical fall day in Kos reaches about 21°C and drops to 20°C overnight. The warmest of the three months is September, the coolest November.
Kos weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 14° / 12° | 173 | 12.3 | 9.8 | 4.1 |
| Feb | 14° / 12° | 126 | 11.5 | 10.6 | 4.0 |
| Mar | 15° / 13° | 78 | 8.3 | 11.7 | 5.0 |
| Apr | 17° / 15° | 39 | 5.8 | 12.9 | 6.3 |
| May | 20° / 18° | 16 | 3.1 | 13.9 | 8.0 |
| Jun | 24° / 22° | 2 | 0.4 | 14.5 | 9.5 |
| Jul | 26° / 24° | 0 | 0.1 | 14.3 | 9.6 |
| Aug | 26° / 24° | 0 | 0 | 13.4 | 9.4 |
| Sep | 24° / 23° | 16 | 1.8 | 12.3 | 9.3 |
| Oct | 22° / 20° | 62 | 4.9 | 11 | 8.0 |
| Nov | 19° / 17° | 120 | 8.9 | 10 | 6.5 |
| Dec | 16° / 14° | 190 | 12.8 | 9.5 | 4.7 |
Cloud cover in Fall
The sky is clear or mostly clear about 73% of the time across fall.
Chance of precipitation in Fall
Kos gets around 198 mm of rain over 16 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 22 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 48 min in early September to 9 h 42 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.3 kWh/m².
Hazard calendar for Kos
In fall, Kos overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Kos's rainy season runs November–February, when most of the year's rain falls.
Is fall a good time to visit Kos?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is one of the better times to visit Kos for general sightseeing.
What to pack for Kos in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Kos sees daytime highs around 21°C and nights near 20°C. Worth packing: light clothes, rain gear, sun protection and a windbreaker. About 16 days see rain.
Sea temperature near Kos in Fall
The nearest coast averages about 23°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 25°C and coldest in March near 17°C.
It's comfortable for a long swim from May 23 to Nov 28 — about 6.2 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 17 | 17 | 17 | 17 | 19 | 22 | 24 | 25 | 24 | 23 | 21 | 19 |
| Comfort | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Warm | Warm | Refreshing | Refreshing | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 17 | Cool |
| Feb | 17 | Cool |
| Mar | 17 | Cool |
| Apr | 17 | Cool |
| May | 19 | Cool |
| Jun | 22 | Refreshing |
| Jul | 24 | Refreshing |
| Aug | 25 | Warm |
| Sep | 24 | Warm |
| Oct | 23 | Refreshing |
| Nov | 21 | Refreshing |
| Dec | 19 | Cool |
UV index in Kos in Fall
Clear-sky midday UV across fall averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Kos peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 4 | 8 | 8 | 10 | 9 | 9 | 8 | 5 | 3 | 2 |
| Level | Moderate | Moderate | Moderate | Very high | Very high | Very high | Very high | Very high | Very high | Moderate | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 8 | Very high |
| May | 8 | Very high |
| Jun | 10 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 8 | Very high |
| Oct | 5 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Where is Kos?
Kos sits at 36.9°N, 27.3°E, 10 m above sea level, in Greece. The nearest listed city is Turgutreis, 14 km away.
Topography around Kos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kos.
Within 3 km, the terrain around Kos has only modest variations in elevation — a maximum elevation change of 196 m around an average of 22 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 830 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,389 m.
The land around Kos is covered by water (37%) and grassland (23%) within 3 km, water (74%) within 16 km, and water (74%) within 80 km.
Greece travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 60% of US
- price level, 2025
- GDP per capita
- $26,948
- 2025
- Happiness
- 5.7 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 0.8
- per 100k, 2023
- Road deaths
- 8.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- High
- EF EPI 592
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Kos (36.8929°, 27.2877°, elevation 10 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.