Porto in May
In May, Porto averages 20°C (68°F) during the day and 13°C (55°F) at night, with around 12 days of rain (75 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Plan for unsettled weather and bring rain gear.
May offers comfortable temperatures in Porto, with some rain to plan around.
How May compares to the rest of the year in Porto
May is in the middle of the year for warmth in Porto (6th of 12) and moderately rainy compared to the rest of the year (8th of 12). Daytime temperature matches the city's annual average. May runs 2°C warmer than April (18°C) and warms a further 4°C into June (24°C).
May sunrise & sunset in Porto
Times shown for Porto local time (Europe/Lisbon), calculated for the 15th of May. They shift by a few minutes day to day across the month.
Photography light in Porto — May
Golden-hour and blue-hour windows for the 15th of May, in Porto's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Porto in May
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on May's tier (High season) and Porto's popularity.
Crowds & pricing — May in Porto
This is a busy month in Porto — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — May in Porto
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Porto in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 14°C / 57°F | 8°C / 46°F | 130 mm | 14 | 0 |
| February | 15°C / 59°F | 8°C / 46°F | 105 mm | 13 | 0 |
| March | 17°C / 63°F | 9°C / 48°F | 85 mm | 12 | 0 |
| April | 18°C / 64°F | 11°C / 52°F | 90 mm | 13 | 0 |
| May | 20°C / 68°F | 13°C / 55°F | 75 mm | 12 | 0 |
| June | 24°C / 75°F | 15°C / 59°F | 35 mm | 8 | 0 |
| July | 26°C / 79°F | 17°C / 63°F | 20 mm | 4 | 0 |
| August | 26°C / 79°F | 17°C / 63°F | 20 mm | 4 | 0 |
| September | 25°C / 77°F | 16°C / 61°F | 65 mm | 8 | 0 |
| October | 21°C / 70°F | 14°C / 57°F | 130 mm | 13 | 0 |
| November | 17°C / 63°F | 11°C / 52°F | 145 mm | 14 | 0 |
| December | 14°C / 57°F | 9°C / 48°F | 165 mm | 14 | 0 |
Other cities with similar May weather
🌍 See the full ranked list of climate twins for Porto in May →
Frequently asked questions
How hot is Porto in May?
In May, Porto averages a high of 20°C (68°F) and a low of 13°C (55°F) — generally mild and pleasant.
Does it rain a lot in Porto in May?
May can be fairly wet in Porto, with about 12 rainy days on average.
Is May a good time to visit Porto?
May is mild and pleasant. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Porto in May?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full May packing list for Porto for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.