The journey starts in Sevilla, in the south of Spain, which is usually very hot and sunny in June. The temperatures can reach over 30°C during the day and fall to 18°C at night. It doesn't rain much there.
As you move north through the regions of Extremadura and Castile y León, the area becomes slightly cooler because of the higher altitude. Temperatures here usually stay in the high 20s during the day and fall to the mid-teens at night. The weather alternates between sunny and partly cloudy, and there's a small chance of rain, especially in Castile y León, but it usually doesn't rain much.
At the end of the route, you reach Galicia. The weather here is cooler and often a bit damp. As you get closer to Santiago de Compostela, expect lots of clouds and regular rain. However, the temperatures are usually comfortable, staying in the mid-20s during the day and falling to the low teens at night. Even though it rains more here than in other parts of the road, there are still a lot of sunny days.
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