What to pack for Porto in May
- t-shirts and light layers
- a light jacket for evenings
- a compact umbrella or rain shell — rain is frequent
Humidity averages 77%; max daily wind around 22 km/h.
How May compares
Best months in Porto: May–September. See the full best time to visit Porto guide.
Porto in May: the details
In May, Porto sees average daytime highs of 20°C (69°F) and overnight lows of 13°C (55°F). Rainfall totals roughly 69 mm across 9.5 rainy days, and the sun shines about 11.9 hours per day with 14.3 hours of daylight mid-month. Relative humidity averages 77%.
In context: May is the 5th-warmest month and the 9th-wettest in Porto. The sunniest month is July (13.3 h/day).
| Metric | May average |
|---|---|
| Daytime high | 20°C / 69°F |
| Overnight low | 13°C / 55°F |
| Rainfall | 69 mm over 9.5 rainy days |
| Sunshine | 11.9 h/day (14.3 h daylight) |
| Humidity | 77% |
| Travel score | 9.4 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Porto, Portugal (41.15, -8.61) — see our methodology. Actual conditions vary year to year.
Not set on Porto? Browse the best places to visit in May ranked by travel score.
Frequently asked questions
How hot is Porto in May?
Daytime highs in Porto in May average 20°C (69°F); nights drop to about 13°C.
Does it rain in Porto in May?
Expect around 9.5 rainy days and 69 mm of rainfall in May.
Is May a good time to visit Porto?
May is one of the best months to visit Porto. Overall travel score: 9.4/10. The best months are May–September.
Also good in May, near Porto
Where should you go next month?
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