Your trips
Organise your trips easily with tabs
London
– Kos
Any date
+ Search
When is the best time to visit Kos?
In general the best time to visit Kos is probably June, July, August, September, when the weather is usually great. The hottest months are July, August, September, while the coldest months are January, February, March.
Depending on the activities you want to experience, you may choose different months to visit:
- The best time for a sunbathing holiday is July, August, September. Average maximum temperatures are up to +28°C in August and it has 31 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during April - November.
- If you want to avoid wet weather, then your choice is May, June, August with the lowest chance of rain.
Average weather in Kos in different months
This is the average weather in Kos for each month based on historic data:
In June, July, August, September the weather is great. There are an average of 31 sunny days in July and the temperature ranges from +24°C to +27°C.
March, April, May, October, November usually has good weather. Average maximum temperature reaches +22°C during October.
In January, February, December the weather is average. Expect around 49 rainy days, and the precipitation amounts to approximately 146 mm in December.
Climate in Kos
Here is the detailed breakdown of the climate in Kos for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +22°C | +26°C | +23°C | +29°C | +37°C | +38°C | +38°C | +38°C | +36°C | +36°C | +28°C | +23°C |
| Average Maximum Temperature | |||||||||||
| +14°C | +14°C | +15°C | +18°C | +21°C | +25°C | +27°C | +28°C | +25°C | +22°C | +19°C | +16°C |
| Minimum Temperature | |||||||||||
| 0°C | +2°C | +3°C | +7°C | +12°C | +15°C | +18°C | +22°C | +17°C | +11°C | +7°C | +3°C |
| Avg. water temperature | |||||||||||
| +20°C | +18°C | +18°C | +19°C | +22°C | +25°C | +27°C | +28°C | +27°C | +26°C | +23°C | +21°C |
| Humidity, % | |||||||||||
| 71 | 72 | 74 | 77 | 80 | 79 | 77 | 79 | 76 | 75 | 73 | 73 |
| Rain, mm | |||||||||||
| 142 | 102 | 66 | 27 | 10 | 2 | 0 | 0 | 9 | 42 | 99 | 146 |
| Snow, mm | |||||||||||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Average wind speed, m/s | |||||||||||
| 6 | 7 | 6 | 5 | 5 | 6 | 7 | 6 | 6 | 5 | 6 | 6 |
| Sunny Days | |||||||||||
| 7 | 7 | 10 | 12 | 17 | 26 | 31 | 31 | 26 | 18 | 10 | 7 |
| Cloud Days | |||||||||||
| 7 | 6 | 9 | 10 | 9 | 3 | 0 | 0 | 2 | 7 | 7 | 6 |
| Rainy Days | |||||||||||
| 17 | 15 | 12 | 9 | 5 | 1 | 0 | 0 | 2 | 7 | 12 | 17 |
| Snowy Days | |||||||||||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Average Temperature
Here are the average maximum and minimum temperatures in Kos during the whole year:
The hottest month in Kos is August with average maximum temperature going up to +28°C. The coldest month is January with the lowest temperatures of +12°C.
Water temperature
Here are the water temperatures in Kos during the whole year:
Kos achieves its warmest water temperature in August, where the average sea temperature goes up to +26°C. Coldest water temperature is in February with +17°C in average.
When can you swim in Kos?
You can swim in Kos from June to October:
- In August - September the water is warm (25°C - 28°C);
- In June - July the water is comfortable (21°C - 25°C);
Humidity
The temperature feels different depending on humidity. Here is how humidity in Kos looks throughout the year, in %:
The most humid month in Kos is May with average humidity going up to 80%. The least humid month is January with an average humidity of 71%.
Rain
Amount of rainfall in mm. in Kos during the whole year based on historical data:
The sunniest and driest month is July with approximately 31 sunny days and a total precipitation of around 0 mm. The rainiest and wettest month is December with approximately 17 rainy days and 146 mm of total precipitation.
FAQ
Frequently asked questions about the weather in Kos:
What is the hottest month in Kos?
The hottest month in Kos is August with average maximum temperature of +28°C.
What is the coldest month in Kos?
The coldest month in Kos is January with minimum temperatures of +12°C.
Is Kos worth visiting in winter?
Winter in Kos could be a good time to visit, as the weather is generally ok.
When does it rain the least in Kos?
if you're looking to visit Kos when it rains the least, you should plan your trip for December, January, February. During this time, rainfall is rare with the driest month being July with only 0 mm of rain.
Other cities in Greece
Check out the weather for other cities in Greece.
Monthly weather in Kos
Source of the data
For this page, we’ve looked at the typical weather in Kos, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.