When to go Porto ?
You can go to Porto almost all year round. The Atlantic Ocean protects the city, so the climate is mild: 15°C on average in winter; between 20 and 25°C in summer. However, it rains quite often, mainly between November and February. September is one of the most favourable months, as the summer tourists have returned and the ocean has warmed up. If you want to enjoy the festivals of Porto and immerse yourself in the culture, go between May and September.
Temperatures are fairly mild throughout the year and overall rainfall is low. Overall, winters are never too cold (15°C on average), and summers are moderately warm (21/25°C). The hottest months are July and August, but evenings are almost always pleasantly refreshed by the Atlantic air. Spring and autumn often have very beautiful periods of sunshine.