Greece Weather Forecast: August 2025 Predictions and Unexpected Shifts Ahead

Greece is set to experience relief from the current heatwave as temperatures return to seasonal norms in the coming days, with a weather shift expected by Thursday. However, August 2025 is expected to bring dynamic weather patterns, including potential heatwaves and localized storms, according to forecasts.

Dimitris Kambolis, a physicist specializing in Environment and Meteorology and a PhD candidate at the National and Kapodistrian University of Athens, shared insights on YouWeather.com. As a member of the Hellenic Meteorological Society (EMTE) and the American Meteorological Society (AMS), Kambolis provides a detailed outlook based on the YouWeather Statistical Model (YSM).

August 2025 Weather Outlook for Greece

August 1–10:

• Temperatures: Normal or slightly below average, with a warming trend toward the end of the period in western, southern mainland, and island regions.
• Conditions: Increased instability is expected, with heavy rainfall and thunderstorms possible in western, central, and northern mainland areas.

August 11–20:

• Temperatures Are Cooling to normal or slightly below-average levels in eastern and southern regions, while western and northern areas are experiencing heat.
• Conditions: Strong northerly winds in the Aegean Sea, with potential for unsettled weather.

August 21–31:

• Temperatures: Rising above average, with a possible intense heatwave toward the month’s end.
• Conditions: Sporadic instability, including localized storms in western, central, and northern mainland Greece.

As Greece transitions from the current heatwave, August will bring a mix of cooler spells, stormy intervals, and a potential late-month heat surge, keeping residents and visitors on alert for varied weather conditions.