If you're planning to walk the Ruta del Padre Sarmiento, you can expect warm weather. It often stays sunny, but also prepare for some clouds and light rain.
From Pontevedra to O Grove, the weather doesn't change much; it's mostly sunny with a little rain sometimes.
Between Cambados and A Illa de Arousa, you might encounter a bit more rain, but it's usually light and doesn't last long.
In the areas of Vilanova de Arousa and Vilagacía de Arousa, the chance of heavier rain increases. However, it's still often sunny.
Finally, in Padrón and Santiago de Compostela, the weather can get a little colder and cloudier with occasional showers, but you'll still enjoy many sunny days.
To sum up, during your trip, you'll enjoy lots of sun, some rain, and comfortable temperatures.
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