However, cloudiness is expected to "temporarily increase" during the afternoon, "especially in the interior regions, where there is a possibility of scattered showers".
If you are in Greater Lisbon, expect "slightly cloudy or clear skies, temporarily increasing cloudiness during the afternoon" and a "small increase in maximum temperature". In Porto, the sky will be "generally not cloudy" following morning mist or fog.
The districts of Setúbal and Évora will record the highest maximum temperature of the day (27ºC) and at the opposite end of the scale Bragança will record the lowest maximum temperature (21ºC).