Kos Town weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Good
Best time to visit: June – September
What is the weather like in Kos Town in May?
In May, Kos Town is mild: daytime highs average 21 °C, and nights cool down to about 18 °C. The sea averages 19.6 °C – bracing, so a wetsuit helps for longer swims. With around 11 hours of sunshine a day, there is plenty of sun. Rain is rare: about 4 days bring 21 mm in total. All in all, May is a good month for a holiday in Kos Town.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 14 h 7 min06:04 – 20:10
- UV index
- 10 · very highclear sky, noon (estimate)
- Muggy days
- 2 daysdew point 18 °C or more
- Wind
- 19 km/haverage daily peak
- Cloud cover
- 29 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+3Europe/Athens
How the score comes together
- Temperatureweight 35 %32 %
- Seaweight 25 %37 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %98 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in May
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
Kos Town in May: quick answers
Is Kos Town hot in May?
No. In May, Kos Town is mild: daytime highs average 21 °C and nights drop to about 18 °C.
Can you swim in Kos Town in May?
Only if you don't mind cold water: in May the sea averages just 19.6 °C. Comfortable swimming is possible from June to November.
Does it rain much in Kos Town in May?
Rain is rare: about 4 days bring 21 mm in total.
Kos Town month by month
The whole year in Kos TownAll destinations: Greece
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)