Portimão Weather in May
With daytime temperatures of 23°C (73°F) and nighttime lows of 15°C (59°F), May in Portimão brings high temperatures during the day. The perfect weather makes it an appealing time to visit.
Rainfall in Portimão in May
Analyzing past climate data, one can expect approximately 5 days of rain, averaging 32 mm (1.3 in). Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.
Temperature in Portimão in May
If you're visiting Portimão in May, expect perfect temperatures with highs of 23°C (73°F) and overnight lows of 15°C (59°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 15°C (59°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Portimão in May
There are approximately 320 hours of sunshine this month, resulting in mostly clear days.If your ideal day consists of dry skies and pleasant temperatures, April, May, June, July, August, September and October typically offer the best circumstances for Portimão.
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 Portimão's climate page.
Portimão Temperature in May
Min Temperature
15°C (59°F)
Max Temperature
23°C (73°F)
Chance of Rain
15%
Precipitation
32 mm (1.3 in)
Rainy days
5 days
Sunshine
320 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Portimão typically stay consistent throughout May, with daily highs averaging around 23°C (73°F). Nights are pleasant, with lows typically ranging from 13°C (55°F) to 16°C (61°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 Portimão in May
Browse day-by-day weather records for Portimão spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Portimão historical weather extremes in May
Our historical data for Portimão spans 1976 to 2025, revealing these weather extremes.
- The warmest day in May was on May 14, 2012, with a maximum of 34°C (93°F).
- On May 2, 2004, Portimão saw its coldest May day with temperatures maxing out at 14°C (57°F).
- Nighttime temperatures dropped to 6°C (43°F) on May 1, 1978, marking the coldest May night on record.
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 Portimão 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. Light rain is possible, so consider bringing a small umbrella or rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Portimão 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 Portimão's climate page.
See the full Portimão climate overview or explore weather in Portugal.
