Summer is set to strengthen over the coming 10 to 15 days, with generally fine weather and temperatures running slightly above seasonal norms. The recent atmospheric instability — which brought scattered showers and thunderstorms — is expected to gradually subside, giving way to more stable, warm conditions across much of Greece.
A Typical Greek Summer Pattern
According to meteorologist Thodoris Kolydas, temperatures remain modestly above average, but current data do not indicate a widespread or prolonged extreme heat event for the country as a whole. Instead, the outlook for the next ten days reflects classic Greek summer weather: sustained warmth, abundant sunshine, limited — though not entirely absent — chances of localized instability, and notable regional differences between north and south, and between mainland and island areas.
Greece in Transition
An ECMWF weekly forecast map covering 13–20 July shows an interesting distribution of temperature anomalies across Europe and the Mediterranean. The strongest positive anomalies — meaning significantly warmer-than-normal conditions — are concentrated over western and southwestern Europe and much of the western Mediterranean. In contrast, eastern Europe and parts of the eastern Mediterranean show milder or even locally cooler anomalies.
Greece lies in a transitional zone — experiencing elevated temperatures, yet not positioned at the epicentre of the most intense heat dome. As Kolydas explains, mainland areas can expect hot weather, with high maximum temperatures especially in lowland regions. However, brief, localized instability remains possible — particularly in northern and central Greece — though rainfall prospects will be highly variable and uncertain.
Warming Across the Mediterranean
Looking ahead to 20–27 July, the picture becomes more uniformly warm. The broader Mediterranean region — including Greece — falls under widespread positive temperature anomalies. This signals an increasing likelihood that hot, stable weather will persist through the final decade of July.
The second week of the medium-range forecast leans more decisively toward settled, summery conditions. Still, based on available data, it’s too early to determine with certainty the intensity or duration of any potential heat surge.
Athens Outlook
In Athens, temperatures are expected to rise clearly from 10 to 12 July onward. Maximums will then hold around the mid- to upper-30s °C — reaching 34–35°C — though the full intensity of the heatwave has yet to be confirmed.