Lisbon Weather in May
May in Lisbon averages 22°C (72°F) during the day and 14°C (57°F) at night. The perfect conditions and moderate rainfall make it a solid month to visit.
Rainfall in Lisbon in May
You can typically expect 8 days of rain this month, averaging around 46 mm (1.8 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Lisbon in May
May in Lisbon is generally perfect, with days reaching 22°C (72°F) and nights settling around 14°C (57°F). The difference between afternoon and evening temperatures is usually noticeable. With overnight lows of 14°C (57°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 Lisbon in May
Expect a lot of sunshine this month, with about 290 hours of sun. These sunny conditions add to the overall experience.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for Lisbon.
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 Lisbon's climate page.
Lisbon Temperature in May
Min Temperature
14°C (57°F)
Max Temperature
22°C (72°F)
Chance of Rain
28%
Precipitation
46 mm (1.8 in)
Rainy days
8 days
Sunshine
290 hours
Percentage Sunshine
63%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lisbon typically stay consistent throughout May, with daily highs averaging around 22°C (72°F). Nights are cool, with lows typically ranging from 13°C (55°F) to 15°C (59°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 Lisbon in May
Browse day-by-day weather records for Lisbon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Lisbon historical weather extremes in May
Based on 50 years of weather observations in Lisbon between 1976 and 2026, these are the recorded extremes.
- On May 28, 2001, temperatures climbed to 36°C (97°F), marking the warmest May day on record.
- The lowest daytime temperature in May was 13°C (55°F), recorded on May 9, 1981.
- Lisbon registered its coldest May night on May 14, 1988, with temperatures dropping to 7°C (45°F).
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
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tolerable
unpleasant
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What to Wear in Lisbon in May
For Lisbon in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Lisbon 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 Lisbon's climate page.
See the full Lisbon climate overview or explore weather in Portugal.
