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Climate · Lisbon

Lisbon in May

Warm and mostly dry, as the days lengthen.

Typical weather, averaged over 30 years

May in Lisbon is warm: highs near 73°F, lows near 58°F. Rain falls on about two days a week, less often as the month goes on, and the days lengthen by 48 minutes from the first week to the last.May in Lisbon is warm: highs near 23°C, lows near 14°C. Rain falls on about two days a week, less often as the month goes on, and the days lengthen by 48 minutes from the first week to the last.

High
73°F23°Caverage
Low
58°F14°Caverage
Wet days
2a week · 22% of days
Daylight
14h 16mon average

Is May a good time to visit Lisbon?

Yes. May is one of Lisbon's best months (May to July, or September).

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How May sits in the year

week by week

Temperature

Highs near 73°F in May, against 60°F to 83°F through the year.Highs near 23°C in May, against 16°C to 28°C through the year.

Chance of a wet day

22% of days in May, against 4% to 35% through the year.

Cloud cover

42% cover in May, against 14% to 54% through the year.

Daylight

14h 16m in May, against 9h 30m to 14h 50m through the year.

Week by week, lightly smoothed, with May shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. April68°20°low 55°low 13°2 wet days a weekRain on about two days a week.
  2. May73°23°low 58°low 14°2 wet days a weekRain on about two days a week.
  3. June78°26°low 63°low 17°1 wet day a weekRain on about one day a week.

Where Lisbon sits, in May

Europe/Lisbon
this place
typical high in May 40°F4°C95°F35°C
Sunrise, mid-May
6:25 AMsets 8:40 PM
Above the sea
0 mlow-lying
Latitude
38.7°Nnorthern hemisphere
Nearest of ours
Melides72 km south-east

The land around Lisbon, shaded by its typical high in May, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Portugal in May

high · low · wet days
See May on the planning mapThe whole year in Lisbon

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Lisbon. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.