Climate Insights for Kallithéa

The climate in Kallithéa is temperate. The average annual temperature is 18°C and approximately 582mm of precipitation falls per year. January is the wettest month, receiving around 82mm of rainfall. Kallithéa is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, March, when temperatures can drop to 9°C. Light snow can occur between January and February.

Kallithéa sees moderate temperature variation throughout the year, ranging from 9°C to 27°C. The warmest month is August, when average highs reach 27°C and the mean temperature sits around 26°C. January is the coolest month, with minimum temperatures around 9°C and an average of 10°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between May and June, with a 5°C shift in average temperatures.

Kallithéa is a relatively dry area, receiving approximately 582mm of precipitation annually, which averages out to around 48mm per month. The wettest month is January, averaging 82mm of rainfall. December and March also tend to see above-average precipitation. The driest month is August, with just 22mm. That's 60mm less than January, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Light snowfall can occur between January and February, totalling around 6cm annually. January is the snowiest month with approximately 5cm.

Kallithéa is moderately windy, with an average annual wind speed of 24km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 29km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in June, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 10km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 28km/h in winter, 24km/h in spring, 20km/h in summer, 24km/h in autumn.

It is currently spring in Kallithéa, which began on March 20, 2026. Kallithéa is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 27°C, while the coldest stretch bottoms out in January near 9°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Kallithéa is during May, June, September, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 42mm per month. By contrast, August can be uncomfortably hot with highs reaching 27°C, while January is the coldest period with lows dropping to 9°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Kallithéa based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.