A significant change in the weather is set to begin today in Spain. Although the week as a whole is likely to be drier and more stable than usual, several Atlantic fronts will hit the western half of the Iberian Peninsula starting this Tuesday. According to Meteored and the Spanish weather agency AEMET, heavy and persistent rainfall is expected there in particular.
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NAO phase changes – and shapes the winter weather
The change in weather is linked to the North Atlantic Oscillation (NAO), which is entering a positive phase today. This large-scale weather pattern typically leads to stable, dry weather in large parts of Spain – but the western regions remain vulnerable to Atlantic fronts.
Where it will rain today
The first of these fronts will reach Spain in the course of the morning. The following areas will be particularly affected:
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Extremadura
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Galicia
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Western Castile and León
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Western Andalusia
There, rainfall could reach up to 30 l/m² above the seasonal average. During the course of the day, the rainfall will slowly move eastwards and could reach the Madrid region on Wednesday morning, albeit in a weakened form. In contrast, hardly any precipitation is expected for the Mediterranean region.
Predicción semanal:
Hoy: lluvia en el litoral gallego; temporal marítimo en el litoral gallego y cantábrico al menos hasta el miércoles.
Martes: lluvia en el oeste peninsular, en Galicia intensas y persistentes; rachas de viento muy fuertes en el extremo norte peninsular.
(1/2) pic.twitter.com/tSVngqq3Yg— AEMET (@AEMET_Esp) December 8, 2025
Second rain front follows on Friday
The next Atlantic front is already forecast for the end of the week. It will also mainly affect the western half of Spain before moving further east and losing much of its intensity. Once again, Galicia, Castile and León, Extremadura and western Andalusia are likely to see the heaviest rainfall. Light precipitation is also possible in the western half of Castile-La Mancha.
Mild temperatures, high snow line
Despite the rainfall, temperatures will remain unusually mild for early December. AEMET does not expect a significant cold snap, and the snow line will remain correspondingly high. More detailed forecasts will be updated during the week.
