Will we witness Mediterranean storms in late 2025? The Mediterranean heatwave continues, and there is no sign of it abating.

Arab Weather - The Mediterranean Sea experienced a historic marine heatwave in June 2025, with temperatures 5–6°C above average in some areas, particularly in the Tyrrhenian Sea and the Ligurian Sea. The average surface temperature at the end of June was around 26°C, compared to a historical average of around 23°C.

While the western and central regions of the sea were the hottest with the highest recorded water temperature, with local temperatures exceeding 28–29 °C in some areas.

The marine heatwave continues and could lead to major flooding during late summer and fall.

With the heat dome repeatedly dominating the western and central parts of the sea, supported by extremely warm air masses at the surface, this means that sea temperatures will remain higher than usual throughout the summer. As the sea water warms, this may increase water vapor in the atmosphere, supporting the occurrence of heavy rains and Mediterranean storms later, especially during the fall, as cold air masses begin to advance from northern Europe.

What are the implications of this in the coming months?

Arab Weather experts said that the consequences of the rise in the temperature of the Mediterranean's surface waters may lead to the occurrence of Mediterranean storms and very deep air depressions in the coming fall and late 2025, which may threaten some areas overlooking the sea. This may also help in the formation of strong cases of atmospheric instability resulting from large temperature differences and water vapor saturated in the air. These factors are considered a fuse for igniting stormy weather conditions and heavy rain in the Mediterranean, and perhaps the occurrence of floods in some areas, as happened in Hurricane Daniel, which affected Libya in September 2023.