Climate Insights for Kallithéa

The climate in Kallithéa is temperate. The average annual temperature is 18°C and approximately 808mm of precipitation falls per year. November is the wettest month, receiving around 124mm 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, June. The coldest months are January, February, December, when temperatures can drop to 8°C. Light snow can occur between January and February.

Kallithéa sees moderate temperature variation throughout the year, ranging from 8°C to 28°C. The warmest month is August, when average highs reach 28°C and the mean temperature sits around 27°C. January is the coolest month, with minimum temperatures around 8°C and an average of 9°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 moderately rainy area, receiving approximately 808mm of precipitation annually, which averages out to around 67mm per month. The wettest month is November, averaging 124mm of rainfall. December and March also tend to see above-average precipitation. The driest month is August, with just 15mm. That's 109mm less than November, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and February, totalling around 8cm annually. January is the snowiest month with approximately 4cm.

Kallithéa is moderately windy, with an average annual wind speed of 21km/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 23km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in October, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h 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 22km/h in winter, 20km/h in spring, 20km/h in summer, 20km/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 28°C, while the coldest stretch bottoms out in January near 8°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Kallithéa is during May, June, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 53mm per month. By contrast, August can be uncomfortably hot with highs reaching 28°C, while January is the coldest period with lows dropping to 8°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.