The Senda Litoral is a trail going through Portugal and Spain's coastlines. The weather changes often due to the diverse climates of these coasts.
The trail starts in Porto where you can expect both sunny and cloudy weather, with some rain. The temperature usually stays between 11°C and 18°C. This is also true for Vila Chã and Póvoa de Varzim.
As you keep moving north to Marinhas, the weather stays mostly sunny, but it can rain a bit more. The temperature can go up to 21°C.
In Viana do Castelo, Caminha, and Porto Mougás, the weather varies, from sunny to cloudy, with unpredictable rain. The temperature generally stays between 12°C and 18°C.
The part of the trail through Saians and Redondela sees more rain, and the temperature decreases. It can be as warm as 18°C in Saians, and cool down to 11°C in Redondela.
The later sections through Pontevedra and Caldas de Reis get a bit warmer, up to 19°C. Both sunny and rainy weather are possible, which continues in Padrón. Here, the temperatures can go down to 8°C.
The trail ends in Santiago de Compostela where the weather is a mix of sunny, partly cloudy, and rainy. The temperatures are often between a cool 8°C and warmer 18°C, but it's typically cooler.
In summary, if you plan to walk this trail, expect both sun and rain, and moderate to cool temperatures.
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