Monthly weather forecast and climate
Kos, Greece

Clear waters of the Kos Town Harbour, Greece
Clear waters of the Kos Town Harbour, Greece

The best time to visit Kos

August is the best period for swimming and other water activities in Kos, Greece, as the sea temperature is 25.3°C (77.5°F), the rain falls for only 0.4 days, and 1mm (0.04") of rainfall is accumulated.

Weather in January

January, the same as December, in Kos, Greece, is a moderate winter month, with average temperature varying between 11.1°C (52°F) and 13.8°C (56.8°F). The coldest month is January, with an average high-temperature of 13.8°C (56.8°F) and an average low-temperature of 11.1°C (52°F). Weather in January »

Weather in February

The last month of the winter, February, is also a moderate month in Kos, Greece, with average temperature fluctuating between 14.4°C (57.9°F) and 11.9°C (53.4°F). In February, the average high-temperature is relatively the same as in January - a still mild 14.4°C (57.9°F). Weather in February »

Weather in March

The first month of the spring, March, is also a moderate month in Kos, Greece, with average temperature ranging between max 15.8°C (60.4°F) and min 13°C (55.4°F). In Kos, Greece, the average high-temperature is relatively the same as in February - a still mild 15.8°C (60.4°F). Weather in March »

Weather in April

April is an enjoyable spring month in Kos, Greece, with average temperature fluctuating between 15.3°C (59.5°F) and 18°C (64.4°F). In Kos, the average high-temperature is almost the same as in March - a comfortable 18°C (64.4°F). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Kos, Greece, with average temperature varying between 18.5°C (65.3°F) and 21.6°C (70.9°F). In May, the average high-temperature marginally rises, from a comfortable 18°C (64.4°F) in April, to a pleasant 21.6°C (70.9°F). Weather in May »

Weather in June

June, the first month of the summer, in Kos, is a moderately hot month, with average temperature fluctuating between 25.2°C (77.4°F) and 22.1°C (71.8°F). In June, the average high-temperature slightly increases, from an agreeable 21.6°C (70.9°F) in May, to a warm 25.2°C (77.4°F). Weather in June »

Weather in July

July, like June, in Kos, Greece, is another warm summer month, with average temperature varying between 24.5°C (76.1°F) and 27.9°C (82.2°F). In July, the average high-temperature is practically the same as in June - a still warm 27.9°C (82.2°F). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Kos, Greece, with average temperature ranging between max 28.5°C (83.3°F) and min 25°C (77°F). The ideal sea water temperature of 25.3°C (77.5°F) and only 0.4 rainfall days, with 1mm (0.04") of accumulated rainfall, makes August the best time for swimming and other water activities. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Kos, Greece, with average temperature ranging between max 25.8°C (78.4°F) and min 22.8°C (73°F). In Kos, the average high-temperature is almost the same as in August - a still warm 25.8°C (78.4°F). Weather in September »

Weather in October

October, the same as September, in Kos, Greece, is another pleasant autumn month, with temperature in the range of an average low of 19.8°C (67.6°F) and an average high of 22.6°C (72.7°F). In Kos, the average high-temperature slightly decreases, from a moderately hot 25.8°C (78.4°F) in September, to a pleasant 22.6°C (72.7°F). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Kos, Greece, with temperature in the range of an average low of 16.9°C (62.4°F) and an average high of 19.2°C (66.6°F). In Kos, the average high-temperature slightly decreases, from an agreeable 22.6°C (72.7°F) in October, to an enjoyable 19.2°C (66.6°F). Weather in November »

Weather in December

The first month of the winter, December, is also a moderate month in Kos, Greece, with average temperature varying between 15.5°C (59.9°F) and 13.2°C (55.8°F). In Kos, the average high-temperature in December slightly decreases, from a comfortable 19.2°C (66.6°F) in November, to a mild 15.5°C (59.9°F). Weather in December »
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FAQ

What is the coldest month in Kos?

The coldest month is January, with an average high-temperature of 13.8°C (56.8°F) and an average low-temperature of 11.1°C (52°F).

How many days does it rain in Kos?

Throughout the year, there are 87.4 rainfall days, and 351mm (13.82") of precipitation is accumulated.

What is the rainiest month in Kos?

The month with the most rainfall in Kos, Greece, is January when the rain falls for 13.5 days and typically aggregates up to 81mm (3.19") of precipitation.

When is the lowest UV index in Kos?

Months with the lowest UV index in Kos are January, February and December, with an average maximum UV index of 4.

What is the most humid month in Kos?

Months with the highest humidity are February, April and May, with an average relative humidity of 70%.

What is the month with the coldest sea water in Kos?

March is the month with the coldest seawater in Kos, Greece, with an average sea temperature of 16.9°C (62.4°F).

When are the longest days in Kos?

The month with the longest days in Kos is June, with an average of 14.7h of daylight.

What month has the most sunshine in Kos?

With an average of 12.2h of sunshine, June has the most sunshine of the year in Kos.

What are the least humid months in Kos?

Months with the lowest humidity are July and October, with an average relative humidity of 65%.

What is the driest month in Kos?

July and August are months with the least rain in Kos when the rain falls for 1.1 days and typically aggregates up to 1mm (0.04") of rain.

When is the highest UV index in Kos?

Months with the highest UV index are July and August, with an average maximum UV index of 7.

What is the warmest month in Kos?

The warmest month in Kos, Greece, is August, with an average high-temperature of 28.5°C (83.3°F) and an average low-temperature of 25°C (77°F).

What is the month with the warmest sea water in Kos?

With an average sea temperature of 25.3°C (77.5°F), August is the month with the warmest seawater in Kos, Greece.

What is the month with the shortest days in Kos?

With an average of 9.7h of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Kos?

December has the least sunshine of the year in Kos, Greece, with an average of 6.6h of sunshine.

Average temperature
Kos, Greece

Average temperature - Kos, Greece

The warmest month (with the highest average high temperature) is August (28.5°C).
The month with the lowest average high temperature is January (13.8°C).

The month with the highest average low temperature is August (25°C).
The coldest month (with the lowest average low temperature) is January (11.1°C).

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Average pressure
Kos, Greece

Average pressure - Kos, Greece

The month with the highest atmospheric pressure is December (1017.6mbar).
The month with the lowest atmospheric pressure is July (1007.6mbar).

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Average wind speed
Kos, Greece

Average wind speed - Kos, Greece

The windiest month (with the highest average wind speed) is January (23.7km/h).
The calmest month (with the lowest average wind speed) is May (14.4km/h).

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Average humidity
Kos, Greece

Average humidity - Kos, Greece

Months with the highest relative humidity are February, April and May (70%).
Months with the lowest relative humidity are July and October (65%).

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Average rainfall
Kos, Greece

Average rainfall - Kos, Greece

The wettest month (with the highest rainfall) is January (81mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days
Kos, Greece

Average rainfall days - Kos, Greece

The month with the highest number of rainy days is January (13.5 days).
The month with the least rainy days is August (0.4 days).

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Average sea temperature
Kos, Greece

Average sea temperature - Kos, Greece

The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is March (16.9°C).

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Average daylight / Average sunshine
Kos, Greece

Average daylight / Average sunshine - Kos, Greece

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.7h).

The month with the most sunshine is June (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days
Kos, Greece

Average sunshine days - Kos, Greece

Months with the most sunshine days are July and August (29.8 days).
The month with the least sunshine days is February (14.1 days).

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Average visibility
Kos, Greece

Average visibility - Kos, Greece

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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