According to the Portuguese Institute of the Sea and Atmosphere (IPMA), precipitation levels "above normal" are expected in the first week (from 01/04 to 07/04, with the anomaly value of +1 to 60 mm for the regions of North, Center, and Alto Alentejo)" and for the second week (from 04/08 to 04/14, with the anomaly value of +1 to 30 mm) "only for the Minho region".
In the southern regions of the Montejunto-Estrela mountain system, below-normal precipitation values are expected in the second and third weeks of April. Below-normal values are also expected in the fourth week of the month in the central and southern regions of the country.
Temperatures
With regard to temperatures, the IPMA predicts average values above normal (+0.25 to 3°C) for the entire country during the first two weeks of April. Later, in the fourth week of the month, average values between 0.25 and 1°C above normal are expected.
On Tuesday, you can expect rain, especially in the North and Center, being more frequent and intense in Minho and Douro Litoral. A small increase in the minimum temperature across the continent is also expected.
On Wednesday, expect generally very cloudy skies and light showers, more frequent in the North and Center regions, but also with a small rise in temperature. The maximum temperatures will be between 18ºC (in Bragança) and 21ºC (in Leiria, Santarém, Évora, and Faro) in most of the country. Minimum temperatures are expected to range between 7ºC in Bragança and 13ºC in Porto, Aveiro, Lisbon, and Faro.
The week should end with thermometers above 20 degrees - Santarém and Évora could reach 25ºC on Friday; Braga, Aveiro, Castelo Branco, and Beja at 24ºC; Faro, Lisbon, Viana do Castelo and Viseu should remain at a maximum of 21 degrees.