The new emergency weather bulletin predicts a worsening of weather conditions starting this afternoon and lasting for almost 24 hours due to the Cassandra storm, which will pass north of Greece but not significantly affect the country, according to the Hellenic National Meteorological Service (HNMS).

The weather will worsen as a cold front passes through from early afternoon on Friday (04-10-24) until Saturday evening (05-10-24), bringing locally heavy rain and storms, mainly in the western and northeastern parts of Greece.

Detailed Forecast:

Friday (04-10-24):
From early afternoon, rain and storms will initially affect the northern Ionian Sea and gradually spread to Epirus, the rest of the Ionian Islands, western Central Greece, and northwestern Peloponnese. During the night, there is a possibility that western Thessaly may be briefly affected. The phenomena will weaken by night in the northwest.

Saturday (05-10-24):

• From early morning until the afternoon, rain and storms will affect western Central Greece, the western Peloponnese, and the southern Ionian Islands.
• From late morning until evening, eastern Macedonia, Thrace, and the northeastern Aegean islands will be affected.

Meteorologist Klearchos Marousakis warns of heavy rainfall, storms, and possible hail. He mentions a low-pressure system from Italy that will affect several parts of Greece from Friday through Monday. This system could bring frequent lightning and strong wind gusts.

The areas most affected will be western Greece, as well as the eastern and northeastern regions.

Today’s Weather:

Initially, there will be some clouds, mainly in the western, central, and northern regions, with a chance of brief local showers, especially in western Greece, eastern Macedonia, and Thrace. However, from midday, the weather will worsen in the northern Ionian Sea, with heavy rain and storms spreading to Epirus, western Central Greece, and other Ionian Islands. Some regions of western Macedonia and northwestern Peloponnese may also be affected. There will also be dust transport from Africa in the Ionian Sea and the western mainland.

Temperatures:

• Western Macedonia: 6-27°C
• Northern Greece: 8-28/30°C
• Thessaly: 12-31/33°C
• Epirus: 12-30/32°C
• Other mainland areas: 14-29/32°C
• Ionian Islands: 18-27°C
• Aegean islands and Crete: 16-27/29°C

Winds:

• Aegean: Southern winds, 4-5 Beaufort
• Ionian: Southern-southeastern winds up to 5 Beaufort, strengthening to 6-7 Beaufort in the northern parts.

Regional Forecasts:

• Macedonia, Thrace: Clouds increasing from the west in the afternoon, with local showers in western Macedonia by evening. Winds will be from the south at 2-4 Beaufort. Temperature: 10-28°C, slightly lower in western Macedonia.
• Ionian Islands, Epirus, Western Greece, Western Peloponnese: Increased cloudiness with local showers and sporadic storms from the afternoon, weakening overnight in the northwest. Southern winds at 4-6 Beaufort, locally up to 7 in the Ionian Sea. Temperature: 12-29°C, cooler inland in Epirus.
• Eastern Central Greece, Euboea, Eastern Peloponnese: Generally clear, with clouds in the afternoon. Southern winds at 3-5 Beaufort, locally up to 6. Temperature: 16-31°C.
• Cyclades, Crete: Generally clear, with southern winds at 3-4 Beaufort. Temperature: 18-29°C.
• Islands of the Eastern Aegean, Dodecanese: Generally clear, with southern winds at 4-6 Beaufort. Temperature: 17-30°C.
• Thessaly: Generally clear, with clouds increasing by the evening, and a chance of isolated showers or storms in the west. Winds: Variable at 2-4 Beaufort. Temperature: 10-29°C.
• Attica: Clear, with clouds from the evening. Southern winds at 3-5 Beaufort. Temperature: 12-30°C.
• Thessaloniki: Clouds increasing from midday. Variable winds at 2-4 Beaufort, briefly southern in the afternoon. Temperature: 14-28°C.

Weather Forecast for Saturday 05-10-2024:

In the Ionian Sea, the mainland, and the northeastern Aegean islands, expect clouds, local showers, and sporadic storms. Intense weather in western Central Greece and the western Peloponnese will subside by noon, while eastern Macedonia, Thrace, and the northeastern Aegean will experience storms from late morning until evening.

Dust transport from Africa will affect most of the country.

Forecast for Sunday 06-10-2024:

Unstable weather with clouds and local showers, particularly in the Ionian, the western and northern mainland, and northern Aegean, improving by night.

Forecast for Monday 07-10-2024 and Tuesday 08-10-2024:

By Monday, localized showers and storms will clear, with generally good weather across the country by Tuesday. Winds will shift to the west-northwest, with temperatures dropping slightly but rising again on Tuesday.