May brings the Camino Portugués de la Costa alive with sunshine interspersed by Atlantic rains. Morning temperatures often start around 8°C and climb to highs of 15-26°C in the afternoons. Rainfall varies, with occasional heavy showers giving way to clearing skies. This transitional weather mixes warm, sunny spells with cloudy intervals and periodic downpours, painting a dynamic backdrop for the journey.
Starting from Porto, May unfolds with a mix of sunny and cloudy days. Afternoon temperatures comfortably sit between 14°C and 22°C, with overnight lows dipping to around 9°C. The days often oscillate between periods of warmth and moderate rainfall, with precipitation occasionally reaching 16 mm on rainy days. As you move through Labruge and Póvoa de Varzim, similar patterns persist: mild temperatures, clear days, and intermittent showers. By the time you reach Marinhas, the frequency of sunny days increases, though rain can still be heavy at times, particularly after clear intervals.
Crossing into Galicia, past Caminha, the weather turns slightly cooler, with highs generally peaking at 24°C and occasional heavy rainfalls disrupting stretches of sunny days. As you approach Vigo, expect a pronounced mix of weather conditions. Clear skies herald periods of fine weather, but passing fronts bring notable rainfall, ensuring the landscape remains lush and green. The path from Redondela through Pontevedra is marked by variable conditions—some days bask in sunshine, while others yield to outright downpours. Finally, approaching Santiago de Compostela, the weather stabilizes slightly with rainy days becoming less frequent, allowing more sunshine to break through, yet temperatures cool slightly as you reach this final destination.
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