Daytime highs, nighttime lows and the warmest cities in the Douro Valley, Portugal this May.
The Douro Valley, Portugal, a region in Portugal, typically experiences pleasant weather in May, with maximum daytime temperatures around 20°C (68°F) and nighttime temperatures around 14°C (57°F) in Porto.
Curious about the May temperatures in the prime spots of the Douro Valley? Navigate the map below and tap on a destination dot for more detailed stats.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across the Douro Valley.
Marker color shows the average daytime high temperature in May: blue is cold, red is hot.
Pick a city to see its May weather averages.
Drill down to May weather for any region in Portugal.
Porto averages a daytime high of 20°C (68°F) in May, which is pleasant for the Douro Valley, Portugal.
Average overnight lows in the Douro Valley, Portugal during May sit near 14°C (57°F) in Porto.
Porto enjoys close to 255 hours of sunlight. This not only brightens the days but also uplifts the atmosphere during the month.
The water temperature averages approximately 15°C (59°F) in Porto this month, so not the best month to swim.
We have much more information about the climate in the Douro Valley.
Weather and climate has detailed information for every country in the world. Are you going to Portugal? Get detailed historical weather averages for many cities in Portugal.
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