Porto · May
Low seasonPortugal · Europe
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 14° (57°)9– (48–)17 (63) | 15° (59°)10– (50–)20 (68) | 17° (63°)11– (52–)23 (73) | 18° (64°)13– (55–)26 (79) | 21° (70°)15– (59–)30 (86) | 23° (73°)17– (63–)31 (88) | 24° (75°)19– (66–)34 (93) | 25° (77°)20– (68–)33 (91) | 24° (75°)18– (64–)32 (90) | 22° (72°)16– (61–)27 (81) | 17° (63°)12– (54–)22 (72) | 15° (59°)11– (52–)19 (66) |
Ø night, range from coldest to warmest nightØ nightrange | 7° (45°)1– (34–)13 (55) | 8° (46°)1– (34–)12 (54) | 9° (48°)2– (36–)14 (57) | 11° (52°)4– (39–)15 (59) | 13° (55°)8– (46–)17 (63) | 15° (59°)10– (50–)19 (66) | 16° (61°)11– (52–)20 (68) | 16° (61°)11– (52–)20 (68) | 15° (59°)10– (50–)19 (66) | 14° (57°)8– (46–)18 (64) | 10° (50°)3– (37–)15 (59) | 8° (46°)2– (36–)14 (57) |
☀️Sunshine | 5h | 6h | 7h | 8h | 9h | 10h | 11h | 10h | 8h | 6h | 5h | 5h |
🌊Water Temp | 14° (57°) | 14° (57°) | 14° (57°) | 15° (59°) | 16° (61°) | 17° (63°) | 17° (63°) | 17° (63°) | 17° (63°) | 17° (63°) | 15° (59°) | 14° (57°) |
🌧Rain Days | 7d99mm (3.9") | 7d82mm (3.2") | 8d90mm (3.5") | 8d82mm (3.2") | 5d56mm (2.2") | 3d29mm (1.1") | 1d9mm (0.3") | 1d16mm (0.6") | 4d49mm (1.9") | 8d113mm (4.4") | 9d119mm (4.7") | 8d103mm (4.1") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Off-season — lowest travel prices with still acceptable climate.
May in Porto at 21°C (70°F) is too cool for a beach holiday, but suitable for sightseeing and hiking. The best travel months are July and August.
Daytime highs average 21°C (70°F), cooling to 13°C (55°F) at night (daily average: 17°C (63°F)). Peaks reach around 30°C (86°F), the coldest nights around 8°C (46°F). With 9 sunshine hours per day, May is one of the sunniest months — 56 mm (2.2 in) of rain over 5 days. At 16°C (61°F), the water is still quite cool in May — a wetsuit may be useful.
A jacket for cool evenings should not be left behind. Sightseeing and excursions can be enjoyed comfortably at this time of year.
Spring: the azaleas in the Jardim do Palácio de Cristal bloom purple-pink, the terraces on the Cais da Ribeira reopen and Douro river cruises start their season. The weather is changeable — but the city is worth every rainy day.
Packing list for Porto in May
- Long-sleeved shirts and light trousers
- Light jacket
- SPF 50 sunscreen
- Sunglasses
- Sun hat
- Small umbrella (occasional showers possible)
- Travel first-aid kit
Frequently Asked Questions
- Is May a good time to visit Porto?
- May is not an optimal month for Porto (Score: 70/100), but it is manageable. For better conditions, consider July and August.
- How warm is it in Porto in May?
- In May, Porto sees daily highs of 21°C (70°F). Nights cool to 13°C (55°F), with a daily average of 17°C (63°F). Peaks reach around 30°C (86°F), the coldest nights around 8°C (46°F).
- How much rain falls in Porto in May?
- In May, Porto receives an average of 56 mm (2.2 in) of rain over 5 rain days. That is comparatively dry.
- How many sunshine hours does Porto get in May?
- Porto averages 9 sunshine hours per day in May — above the annual average.
- How warm is the water in Porto in May?
- Water temperature in Porto in May averages 16°C (61°F) — still quite cool — a wetsuit may be useful.
