Month guide · Serpa, Portugal
Serpa in May: weather and what to expect
In May, Serpa is one of the ten warmest towns in Portugal. May highs in Serpa are now 2.3°C warmer than in 1991-2000. In May, Serpa averages highs of 25°C and lows of 13°C, with about 7 rainy days and 39 mm of rain. Our rules rate it good for walking and cycling. Crowds in the Alentejo are low.
Is May a good time to visit?
Good for
- Walking and cyclingHighs of 25°C with about 7 rainy days
Not ideal for
Nothing stands out as a weaker fit.
Daily highs through May
Town-level · ERA5-Land 1991-2020Highs climb about 6°C over the month.
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 Serpa |
|---|---|---|---|
| Mértola, Alentejo | 26°C | 7 | 34 km |
| Minas de São Domingos, Alentejo | 25°C | 7 | 32 km |
| Neves, Alentejo | 25°C | 7 | 21 km |
The nearest towns with a warmer May. Distances are in a straight line.
How May is changing
Town-level · ERA5-LandMay highs are 2.3°C warmer than in 1991-2000, and May rainfall is down about 45% (2016-2025 against 1991-2000). Days above 30°C in May went from 3.3 to 6.3 a year on average.
Questions about Serpa in May
Is May a good time to visit Serpa?
Our rules rate May good for walking and cycling (highs of 25°C with about 7 rainy days).
How warm is Serpa in May?
Average highs are 25°C and lows 13°C. April averages 21°C and June 30°C.
Does it rain much in Serpa in May?
About 7 days have at least 1 mm of rain, with 39 mm in total over the month.
Is Serpa busy in May?
In May 2025, nights booked through online platforms in the Alentejo were about 30% of the busiest month, which we count as low. The figure is for the whole region and leaves out hotels.
How long are the days in Serpa in May?
About 14 h 12 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