Vila Nova de Gaia Weather in May
Vila Nova de Gaia in May averages 21°C (70°F) during the day and 13°C (55°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Vila Nova de Gaia in May
You can expect rain on around 13 days based on historical patterns, with 103 mm (4.1 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Vila Nova de Gaia in May
In May, Vila Nova de Gaia sees pleasant temperatures, with highs of 21°C (70°F). Nights drop to around 13°C (55°F). Conditions are often most pleasant around the middle of the day. With overnight lows of 13°C (55°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Vila Nova de Gaia in May
Expect a lot of sunshine this month, with about 255 hours of sun. These sunny conditions add to the overall experience.
Wind Speed in Vila Nova de Gaia in May
Average wind conditions reach 5 m/s (10 knots) in May. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.
Average water temperature in May
The water temperature is 15°C (59°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.Should you favor a climate that's both dry and comfortably warm, June, July, August and September typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Portugal, check out our Vila Nova de Gaia's climate page.
Vila Nova de Gaia Temperature in May
Min Temperature
13°C (55°F)
Max Temperature
21°C (70°F)
Water Temperature
15°C (59°F) *
Chance of Rain
42%
Precipitation
103 mm (4.1 in)
Rainy days
13 days
Humidity
74% *
Windspeed
5 m/s (10 knots) *
Sunshine
255 hours *
Percentage Sunshine
61% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Vila Nova de Gaia typically stay consistent throughout May, with daily highs averaging around 21°C (70°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 13°C (55°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Vila Nova de Gaia in May
Browse day-by-day weather records for Vila Nova de Gaia spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Vila Nova de Gaia historical weather extremes in May
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Vila Nova de Gaia.
- On May 23, 2017, temperatures climbed to 33°C (91°F), marking the warmest May day on record.
- Vila Nova de Gaia experienced its chilliest May day on May 6, 1985, reaching only 11°C (52°F).
- The lowest overnight temperature recorded in May was 3°C (37°F) (May 5, 1982).
- Peak precipitation in May occurred on May 1, 2015, when 48 mm (1.9 in) of precipitation was measured.
Best Places in Portugal in May
Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Vila Nova de Gaia in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 15°C (59°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Vila Nova de Gaia in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Portugal, check out our Vila Nova de Gaia's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Vila Nova de Gaia climate overview or explore weather in Portugal.
