September along the Camino Portugués - Senda Litoral sees a mix of sunny days and occasional rain showers in both Northern Portugal and Galicia. In Northern Portugal, temperatures generally range from the mid-20s to low 30s degrees Celsius, with occasional showers especially towards the end of the periods. Galicia experiences a similar mix of weather with sunny spells and significant rainfall on some days. Highs vary, reaching up to the mid-30s°C in places, while lows hover around the mid-teens. Rainfall accumulates more towards the transition to Galicia, particularly in Santiago de Compostela.
Starting from Porto, the weather is mostly sunny with some partly cloudy spells and moderate to heavy rain showers. Temperatures range from 21°C to 36°C, with heavier rain early in the period. As you move through Vila Chã and Póvoa de Varzim, the weather continues with sunny skies and occasional patchy rain, maintaining highs in the upper 20s°C and lows in the mid-teens. In Marinhas and Viana do Castelo, the period sees mostly sunny days with some heavy rain at times, and highs reaching around 30°C.
Moving to Caminha, conditions are similar with a mix of sun and some modest rain showers, as temperatures drop slightly towards the lower end of the spectrum.
In Porto Mougás and Saians, a sunny start transitions into heavier rains with temperatures mostly in the mid-20s°C. Redondela and Pontevedra experience increasing rain showers with sporadic sun, with highs in the mid to low 20s°C. As you progress through Caldas de Reis and Padrón, the weather remains mixed with sunny intervals and occasional heavier rainfall. Finally, in Santiago de Compostela, significant rain show-ups with temperatures peaking at 34°C before cooling as showers persist.
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