Athens Temperature by Month

Athens, Attica, Greece has an average annual maximum temperature of 23°C (73°F), ranging from 14°C (57°F) in January to 33°C (91°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

In Athens, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 23°C (73°F) in July to 7°C (45°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Athens by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. July, the city's warmest month, averages 364 hours of sunshine.

The chart below shows the average temperature throughout the year:

Athens's average annual maximum temperature is 23°C (73°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Athens, January is the coolest month, with average highs of 14°C (57°F) and humidity around 72%, considered high. In July, the warmest month, temperatures average 33°C (91°F) with 43% humidity, conditions that feel moderate. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Athens this rarely lasts long on the ground.

For more on Athens's weather, including monthly rainfall, sunshine hours, and humidity, visit our Athens climate page.