Mediterranean Weather Shift: Cold Air to Follow Unseasonably Warm March

After an unusually warm spell, a significant change in weather patterns is expected across the Mediterranean region in mid-March, bringing cooler temperatures and increased precipitation. This shift follows a period of mild conditions that have seen nature bloom prematurely, contrasting with the harsh winter experienced across much of Europe.

Unseasonable Warmth and the Polar Vortex

Early March brought unseasonably warm weather to the Mediterranean, with temperatures rising and nature responding with early blooms. This warmth was driven by a subtropical anticyclone centered over the Mediterranean Sea, creating a dome of mild air. However, this period of pleasant weather is considered anomalous, especially considering the severe winter conditions experienced elsewhere in Europe, where several nations were gripped by intense cold and heavy snowfall.

Meteorologists are closely monitoring the Polar Vortex, an immense cyclonic spinning top permanently stationed over the North Pole. A weakening and fragmentation of the Polar Vortex, a phenomenon known as Stratwarming, is occurring in the upper stratosphere. This disruption could lead to the release of Arctic air southward.

Atlantic Currents and the Impending Change

The dismantling of the high-pressure dome over the region will open a pathway for unstable Atlantic currents to sweep across the Mediterranean. This will bring a return to more typical March weather, characterized by rain, wind, and colder air. The change is anticipated to become noticeable after March 15th, with the potential for polar air masses to intrude into the region.

Temperature and Sea Conditions in March

Current average daily high temperatures across the Mediterranean range from 66.0°F in Acre, Israel, to 58.3°F in Afytos, Greece. Nighttime temperatures range from 59.1°F in Aen Sokhna, Egypt, to 47.9°F in Agropoli, Italy. Sea temperatures in March average around +18°C (64.4°F) in Paphos, Cyprus, and +13.2°C (55.8°F) in Monaco, considered very cool for swimming but potentially tolerable for short periods.

Regional Variations

Here’s a snapshot of conditions across several Mediterranean locations as of March:

• Acharavi, Greece: 59.3°F day / 54.9°F night, 42.3% cloudiness, 59.2°F sea temperature.
• Acre, Israel: 66.0°F day / 59.2°F night, 32.5% cloudiness, 63.9°F sea temperature.
• Adana, Turkey: 68.2°F day / 50.1°F night, 31.4% cloudiness, 62.4°F sea temperature.
• Agropoli, Italy: 59.9°F day / 47.9°F night, 46.4% cloudiness, 58.6°F sea temperature.
• Aen Sokhna, Egypt: 73.0°F day / 59.1°F night, 13.8% cloudiness, 64.6°F sea temperature.

Looking Ahead

While snowfall at lower altitudes is not expected, the atmospheric shift promises a significant change, impacting areas from the coasts of Sardinia to the Alpine valleys. The second half of March is expected to be dynamic, with thunderstorms and intense showers returning to the region. The models used for these forecasts are from the ECMWF (European Centre for Medium-Range Weather Forecasts) and the Global Forecast System (GFS).