The average temperature goes up to 15°C (59°F), accompanied by encouraging high averages of up to 19°C on a cloudless day.

Get the monthly weather forecast for Porto, Porto, Portugal, including daily high/low, historical averages, to help you plan ahead.

May weather in Porto Portugal. Daily high temperatures increase by 5°F, from 65°F to 69°F, rarely falling below 58°F or exceeding 80°F.

The best season to visit Porto is late spring (May/June) or early autumn (September). ... The following weather charts display the average weather for Porto.

The weather in Porto in May is mildly cool and breezy, with average highs of 69°F (20°C) and lows of 53°F (12°C).

Porto weather in May 2025. Expect 20°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Porto in May.

There is a 64% chance of a perfect sunny day and a 36% chance of seeing a mixture of sunshine and clouds with an average 16mm of rainfall this month.

Seasonal average climate and temperature of Porto in may ; Average temperature, 15°C ; Highest temperature, 18°C ; Lowest temperature, 12°C ; Highest record ...

2 февр. 2024 г. · In May, Porto experiences a steady climb towards summer conditions. The mild temperatures of April give way to a noticeable increase in warmth.