Month guide · Lagos, Portugal
Lagos in May: weather and what to expect
May is the first month of the year with average highs above 20°C in Lagos. May highs in Lagos are now 1.9°C warmer than in 1991-2000. In May, Lagos averages highs of 23°C and lows of 15°C, with about 6 rainy days and 32 mm of rain. Our rules rate it good for walking and cycling. Crowds in the Algarve are medium.
Is May a good time to visit?
Good for
- Walking and cyclingHighs of 22°C with about 6 rainy days
Not ideal for
Nothing stands out as a weaker fit.
Daily highs through May
Town-level · ERA5-Land 1991-2020Highs climb about 4°C over the month. A day above 30°C happens in roughly 1 May in 4.
May in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in May 2027
- 1 May Labor Day
- 27 May Corpus Christi
Local (municipal) holidays are not included.
Warmer in May
Where is warm in May →| Place | High | Rain days | From Lagos |
|---|---|---|---|
| Portimão, Algarve | 23°C | 7 | 13 km |
| Ferragudo, Algarve | 23°C | 7 | 14 km |
| Parchal, Algarve | 23°C | 7 | 15 km |
| Estômbar, Algarve | 23°C | 7 | 17 km |
| Carvoeiro, Algarve | 23°C | 7 | 18 km |
The nearest towns with a warmer May. Distances are in a straight line.
How May is changing
Town-level · ERA5-LandMay highs are 1.9°C warmer than in 1991-2000, and May rainfall is down about 45% (2016-2025 against 1991-2000). Days above 25°C in May went from 4.5 to 10 a year on average.
Questions about Lagos in May
Is May a good time to visit Lagos?
Our rules rate May good for walking and cycling (highs of 22°C with about 6 rainy days).
How warm is Lagos in May?
Average highs are 23°C and lows 15°C. April averages 20°C and June 26°C.
Does it rain much in Lagos in May?
About 6 days have at least 1 mm of rain, with 32 mm in total over the month.
Is Lagos busy in May?
In May 2025, nights booked through online platforms in the Algarve were about 40% of the busiest month, which we count as medium. The figure is for the whole region and leaves out hotels.
How long are the days in Lagos in May?
About 14 h 08 min from sunrise to sunset in the middle of the month.
Sources
Climate: ERA5-Land, Copernicus Climate Change Service (C3S) Climate Data Store, contains modified Copernicus information (CC BY 4.0). Crowds: Eurostat, nights spent in short-stay accommodation booked through online platforms (tour_ce_omn12) (CC BY 4.0). Place names and populations: GeoNames (CC BY 4.0). Climate averages cover 1991-2020. Daylight: calculated from the town's coordinates. Full methodology