Poland to see temperatures reach 25°C before sharp drop on 9 October

High-pressure system Borchert maintains early autumn warmth

A high-pressure system named Borchert remains positioned over Central Europe, directing warm and dry air from the south across Poland. This broad atmospheric ridge blocks active frontal boundaries from Western Europe, prolonging late-summer conditions well past the astronomical and calendar start of autumn on 23 September. On Friday, 2 October, most Polish regions experience cloudless or lightly clouded skies, allowing daytime temperatures to reach between 20°C and 23°C in central and southern areas. The northern coastline, northwestern districts, and southern foothill zones record slightly cooler conditions, with thermometers showing between 17°C and 19°C. Cloud cover increases gradually in western territories through Friday afternoon, bringing localized light rain around Świnoujście.

Weekend conditions bring regional fog warnings and cold nights

The Institute of Meteorology and Water Management (IMGW) issued meteorological hazard alerts for dense morning fog across northern and western provinces. Forecasters warn motorists of travel difficulties on Friday and Saturday mornings, when visibility in river valleys, western plains, and mountain hollows will drop to roughly 200 meters. The Friday fog alert spans Zachodniopomorskie, Pomorskie, Kujawsko-Pomorskie, Lubuskie, and northwestern Wielkopolska, before narrowing slightly on Saturday to northern Wielkopolska, Zachodniopomorskie, Pomorskie, and Kujawsko-Pomorskie. Saturday, 3 October, maintains sunny conditions and highs of 20°C to 23°C across eastern and central Poland. Low clouds, morning mist, and isolated light drizzle persist in northern districts where maximums range between 17°C and 19°C. In the overnight hours leading into Sunday, temperatures fall to between 4°C and 8°C nationwide, with sheltered basins in the Carpathian mountains cooling down to around -1°C.

Midweek temperatures peak at 25 degrees across southern Poland

The high-pressure system begins shifting southward toward Romania on Sunday, 4 October, leading to a subtle transition in local weather patterns. Sunday afternoon temperatures reach approximately 17°C in Podlasie, 19°C in central voivodeships, and 20°C to 21°C in the south, accompanied by isolated showers along the Pomeranian coastline. The beginning of the work week brings scattered cloud cover and brief showers to northern districts, while southern Poland retains sunny conditions with maximum temperatures around 21°C. A stronger warm inflow arrives from Tuesday, lifting temperatures in southwestern Poland to 24°C by Wednesday, 7 October. Thursday, 8 October, marks the warmest day of the period, with temperatures between 21°C and 25°C across the majority of the country, peaking at 25°C in Małopolska.

Cold front to drop daytime temperatures to 14 degrees

The late surge of summer warmth ends abruptly as the atmospheric pattern changes toward the end of the week. Thursday afternoon will bring gusty winds to the Sudeten foothills alongside increased cloudiness and showers across the northeastern border and northwestern extremities. A sharp cold front moves across the country on Friday, 9 October, dropping daytime temperatures by more than ten degrees Celsius nationwide. Thermometers across all Polish regions will reach maximum values of no more than 14°C on Friday. Forecasters project that these cool autumn temperatures will persist through Saturday, 10 October, and Sunday, 11 October, cementing the end of the prolonged warm spell.