Mild weather will persist for a few more days. However, dramatic changes are on the horizon as October gives way to November, and a rare Polar Jet Stream will alter the current weather dynamic.
- Mild Days Ahead: The last days of October will see mild weather, with no rain predicted for the coming ten days.
- Temperature Shifts: Meteorologist George Tsatrafilias forecasts typical autumn temperatures for the long weekend of October 28th, with no extreme cold or warm spikes.
- Sunshine Abounds: The upcoming week promises plenty of sunshine, with temperatures gradually peaking at 24 to 25 degrees Celsius, especially in western Greece and the Peloponnese.
- Strong Winds: Northern winds will maintain their force at 7-8 Beaufort in the Aegean Sea.
- Potential Cyclogenesis: Once the Polar Jet Stream shifts, conditions will favour the formation of rain-laden systems capable of bringing showers across the area.
Meteorologist Christina Rigou from MEGA forecasts a swift transformation in early November. Expect notably lower temperatures and increased rainfall. This change is driven primarily by cold air masses moving into the region. Until then, not a drop of rain is expected.
Uncommon Polar Jet Stream Patterns
The extended dry spell foreseen for the next ten days is attributed to an unusual weather pattern, the Polar Jet Stream, which is affecting the area.
- Weather Phenomenon: The rare polar Jet Stream, with its distinct west-southwest flow, is responsible for this dry phase, leading even low-pressure systems off the African coast to shift in reverse—a truly rare occurrence.
- Temperature Trends: As October ends, temperatures return to seasonal norms, inviting outdoor adventures during the three-day break surrounding October 28.
Upcoming Weather Conditions
Meteorologist George Tsatrafulias expects seasonal temperatures, as he shared online, suggesting outdoor activities will be comfortable, without extreme cold or 30-degree spikes. This upcoming week, characterized by abundant sunshine, will see temperatures slowly reaching 24-25 degrees Celsius, especially in western Greece and the Peloponnese. Northern winds in the Aegean will continue blowing at 7-8 Beaufort, with the atmosphere remaining clear, providing excellent visibility and low humidity, making it ideal for outdoor work and leisure.
Theodoros Kolydas, director of the Hellenic National Meteorological Service, elaborates on the role of the Jet Stream. The presence of the polar Jet Stream at high latitudes, flowing west-southwest, alongside negligible strong winds at middle to higher altitudes, causes weather systems to behave unusually. When the Jet Stream shifts from north to south, it will guide cold air masses toward the Central Mediterranean, fostering conditions for cyclogenesis and bringing rain to the region as systems move from west to east, impacting the entire country.
In essence, the Polar Jet Stream is a vast, high-speed air current that guides atmospheric systems’ movement and is crucial to upcoming weather developments.