In December, the Camino Portugués Interior experiences a wide range of weather conditions from the south starting at Lisbon to the north finishing in Galicia. Typically, the month exhibits fluctuations between clear skies and periods of rain, with varying temperatures depending on the region. As you move northwards, the chances of rain increase, especially in the mountainous areas and near the finish in Santiago de Compostela. Despite the winter season, sunny days offer mild temperatures, particularly in the more sheltered regions, although chilly nights are common, especially inland and at higher elevations.
During the journey through Lisbon, expect a mix of overcast days and sunny spells. Rain can occur intermittently with some moderate showers, while temperatures range from highs of around 20°C dropping overnight to about 7°C.
In Santarém, the weather features occasional light rain showers interspersed with sunny days. Temperatures commonly peak at around 20°C, with lows settling around 4°C.
In the Leiria region, climactic conditions fluctuate between cloudy periods and sunny intervals. Rain is possible, particularly in Alvaiázere, but generally occurs less frequently than further north.
The Coimbra leg of the route presents sporadic heavy rain showers amid mostly overcast conditions. Temperatures hover between 11°C and 2°C, with a few dry and sunny days.
Expect a prevalence of moderate precipitation in the Viseu area, with rain showers being common alongside bouts of sunlight. Daytime highs average around 15°C, while nights can become chilly, dropping to near freezing.
In Vila Real, the climate is marked by considerable rain with heavy showers possible. When dry, the sky clears, bringing occasional mild warmth with highs near 14°C.
Moving through Chaves, the weather sees frequent episodes of heavy rain, though sunny periods occasionally break through. Nighttimes are cold with low temperatures often nearing or below zero.
Upon reaching Galicia, anticipate persistent rainy conditions, notably in locations like Xinzo de Limia and Ourense. The climate remains cool with afternoon highs around 15°C, punctuated by heavy rain particularly as you approach Santiago de Compostela.
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