Arcos de Valdevez Weather in May
With daytime temperatures of 20°C (68°F) and nighttime lows of 10°C (50°F), May in Arcos de Valdevez brings pleasant temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 147 mm (5.8 in) falls on average.
Rainfall in Arcos de Valdevez in May
Historically, May sees about 15 days of rain, with a monthly average of 147 mm (5.8 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Arcos de Valdevez in May
May in Arcos de Valdevez sees highs of 20°C (68°F) and lows of 10°C (50°F) overnight. The difference between afternoon and evening temperatures is usually noticeable. At 10°C (50°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Arcos de Valdevez in May
Enjoy a sunny month with about 249 hours of sunshine, the clear skies make Arcos de Valdevez even more beautiful.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for Arcos de Valdevez.
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 Arcos de Valdevez's climate page.
Arcos de Valdevez Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Chance of Rain
49%
Precipitation
147 mm (5.8 in)
Rainy days
15 days
Humidity
73% *
Sunshine
249 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Arcos de Valdevez typically stay consistent throughout May, with daily highs averaging around 20°C (68°F). Nights are cool, with lows typically ranging from 9°C (48°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 Arcos de Valdevez in May
Browse day-by-day weather records for Arcos de Valdevez spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Arcos de Valdevez historical weather extremes in May
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Arcos de Valdevez.
- On May 13, 1979, temperatures climbed to 33°C (91°F), marking the warmest May day on record.
- Arcos de Valdevez experienced its chilliest May day on May 4, 1977, reaching only 11°C (52°F).
- The lowest overnight temperature recorded in May was 2°C (36°F) (May 6, 1982).
- The wettest day in May Arcos de Valdevez was on May 14, 2001 with 53 mm (2.1 in) of precipitation.
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 →
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What to Wear in Arcos de Valdevez 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Arcos de Valdevez 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 Arcos de Valdevez's climate page.
Temperature Rainfall Sunshine Humidity
See the full Arcos de Valdevez climate overview or explore weather in Portugal.
