The Caminho da Geira e dos Arrieiros mainly spans through northern Portugal and the autonomous community of Galicia in Spain. During this route in January, you can expect a moderate winter climate characterized by a mix of sunny and overcast days, along with frequent rain showers.
In northern Portugal, from Braga to the border with Spain, typical daytime temperatures range between 10°C and 13°C, with nighttime lows around 3°C to 6°C. Rain is quite common, with daily precipitation varying from about 4.5 mm to 12.7 mm. You will often encounter overcast skies and patches of rain, interspersed with sunny and partly cloudy intervals.
As you enter Galicia and continue toward Santiago de Compostela, temperatures remain fairly steady, generally ranging from highs of 10°C to 12°C and lows around 3°C to 6°C. This region also experiences significant rainfall, though slightly less than Portugal, with an average daily precipitation ranging from 4.7 mm to 10.7 mm. The weather here features a blend of rainy and sunny days, similar to northern Portugal, with overcast skies and occasional bouts of moderate to heavy rain.
Overall, you should be prepared for a combination of cloudy, rainy, and sunny days, with moderate temperatures and consistent rainfall throughout the route during January.
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