The average minimum temperature (usually the minimum temperature is noted during the night) in Porto in May is 10.0°C (50°F). The amount of rain in May is high with an average of 89mm (3.5in). This month generally has very pleasant temperatures. The average maximum temperature lies around 19.0°C (66.2°F). With a water temperature of around 15.0°C (59°F), this is not the best month to swim. If you enjoy looking at a blue sky and like sunbathing than this month is a great period to visit Porto. It has 258 hours of sun.

So what to wear in May? Visitors traveling to Porto should plan on bringing a totally waterproof rain jacket since it will be raining some days. Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly.

Do these climate conditions match with when you want to go to Porto? Find out where to stay here.

For other monthly weather averages and what to do in May look at the numbers below.

Weather and Climate offers all the information you need to know about the climate in Porto.

We collected past weather data from many thousand weather stations around the world. So find on this website the historical weather averages in other cities in Portugal and climate and forecast data for all other countries in the world.