May · Portugal
Best time to visit Porto in May Weather, crowds & prices
Weather in Porto in May
Average temperature 17°C, 38 mm of rain, about 31 days with 6+ hours of sunshine and 75% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
9.5/10
Ranked #3 of 12 months
- Avg temp
- 17°C
- Rainfall
- 38 mm
- Humidity
- 75%
- Days with 6h+ sun
- 31
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Porto scores 9.5/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 17°C, 38 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
April–June brings 18–24°C days and soft Atlantic light to Porto’s azulejo-clad Ribeira and port cellars.
May in Porto — one of the year's strongest windows (3rd)
May averages 17°C (62°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Expect 38 mm of rain — occasional showers rather than washed-out days — alongside about 31 days with 6+ hours of sunshine and 14.3 daylight hours.
A 9.5/10 puts this among the year's best months in Porto (3rd of 12); only July scores higher, at 9.8/10.
Pack layers you can shed by midday plus one warm layer for the evening.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Porto in May?
- In May, Porto averages 17°C, 38 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 9.5/10.
- Is May a good time to visit Porto?
- May earns a 9.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Porto in May?
- Expect about 38 mm of rain in May. Average humidity is 75% and there are about 31 days with 6+ hours of sunshine.
Curated in Porto
Tickets & experiences
Things to do in Porto
Porto, Portugal. Live activities and tours from GetYourGuide, matched to this destination.