AEMET has issued a yellow alert for rainfall from 9pm on Saturday night until midday on Sunday.
Spain’s weather agency predicts that up to 15 mm per hour of rain may fall, and there is even a possibility of hail.
Yellow is the lowest level of alert, with no safety risk to citizens. However, people are advised to reconsider activities that may be affected by the weather and remain informed.
Temperatures will fall by a few degrees, with minimums of 13-14 degrees on Sunday and maximums of 20-21 Celsius.
Currently, the forecast for Christmas Day remains warm, with sunshine and a few clouds.