Overview

• Meteogalicia confirms the 2025 climatological summer was the warmest on record in Galicia since 1961, with roughly a 62% rainfall deficit.
• AEMET activates a yellow heat warning in Asturias for 18 September, with highs expected around 34–35 °C in the warmest areas and inland values generally near 28–30 °C.
• Local AEMET‑based forecasts show many Galician towns expecting mostly sunny, dry conditions on 18 September with little to no rain risk.
• Argentina’s SMN issues orange and yellow alerts for strong storms and heavy rain on 18 September—orange for north Río Negro and south La Pampa—while Catamarca faces an early heat spike potentially reaching 39 °C before a possible cool pulse this weekend.
• In Monterrey, a low‑pressure system brings higher humidity and instability, with daytime highs near 29–30 °C and evening shower probabilities rising to about 50–70%.