The districts of Porto, Viana do Castelo, Aveiro and Braga will be under yellow warning between 3am and 9am on Friday.

The IPMA predicts for Friday on the continent periods of rain or showers in the north and central regions, locally strong on the coast, wind from the south quadrant and an increase in the minimum temperature.

Minimum temperatures will range between 05 degrees Celsius (in Bragança) and 17 (in Lisbon) and maximum temperatures between 12 (in Guarda) and 23 (in Santarém).