Climate zone: The northern part of Greece is located in the temperate climatic zone, while the southern part is subtropical.
In 6 months the average temperatures are over 25 degrees. Pleasant water temperatures of up to 25 degrees even invite you to take a bath in the warm season. Due to the warmer temperatures the best time for traveling is from June to August. Nearly unattractive for tourists are the cold months from November to March.
› Duration of daylight and sunshine in Greece
hours of sunshine per day rainy days per month Precipitation in mm/day Relative humidity in % Water temperature Absolute humidity in g/m³ (approx.)
Temperature records of the last 71 years
The hottest temperature measured from 1949 to October 2020 was reported by the Athen Ellinikon weather station. In August 2012 the record temperature of 41.8 °C was reported here. The hottest summer from July to September, based on all 14 weather stations in Greece below 890 metres altitude, was recorded in 2012 with an average temperature of 27.9 °C. This average temperature will normally be measured every 4 to 6 hours, thus also including the nights. Normally, this value is 25.9 degrees Celsius. The average maximum daily temperature at that time was 32.5 °C.
The coldest day in these 71 years was reported by the weather station Larissa Airp. Here the temperature dropped to -7.4 °C in January 2020. Larissa Airp lies at an altitude of 74 meters above sea level. The coldest winter (January to March) was in 1949 with an average temperature of 8.2 °C. In Greece, it is usual to have about 2.2 degrees more at 10.4 °C for this three-month period.
Long-term development of temperatures from 1978 - 2019
In contrast to single record values, a long-term development cannot simply be brought about by all weather stations in the country. Both the number and the locations are constantly changing. A simply calculated average value would give a falsified result. If several measuring stations in particularly cold mountain or coastal regions are added in one year, the average would already decrease as a result of this alone. If a station fails during the summer or winter months, it does not provide any values and falsifies the average again. The subsequent long-term development was therefore reduced to only 2 measuring points in order to have actually comparable data over as long a period as possible.
In the years 1978 to 2019 there were only these 2 weather stations in the whole country, which reported continuous temperature values (Kerkyra, Herakleion). From these weather reports we have created a long-term development that shows the monthly average temperatures. The hottest month in this entire period was 2012 with 29.2 °C. 1991 was the coldest month with an average temperature of 8.7 °C.
The average annual temperature was about 17.8 °C in the years after 1978 and about 19.3 °C in the last years before 2019. So in less than 42 years it has increased by about 1.5 °C. This trend only applies to the selected 2 weather stations in Greece. A considerably more comprehensive evaluation of the global warming
has been provided separately.
More detailed information on global warming with a view by continent can also be found on our topic page on climate change
. Data basis: German Weather Service, individual values averaged and supplemented by own elements.