Month guide · Caldelas, Portugal
Caldelas in May: weather and what to expect
May is the first month of the year with average highs above 20°C in Caldelas. May highs in Caldelas are now 1.3°C warmer than in 1991-2000. In May, Caldelas averages highs of 21°C and lows of 11°C, with about 14 rainy days and 150 mm of rain. Crowds in Norte are medium.
Is May a good time to visit?
Good for
No verdicts for Caldelas in May yet. They only use climate values that are precise enough to judge with.
Not ideal for
- Reliable dry weatherAbout 14 rainy days in the month
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 3; nights below 5°C in about 1 in 3.
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 Caldelas |
|---|---|---|---|
| Montalvo, Oeste e Vale do Tejo | 24°C | 9 | 243 km |
| Vila Velha de Ródão, Centro | 24°C | 8 | 232 km |
| Montalvinho, Oeste e Vale do Tejo | 24°C | 9 | 243 km |
| Tomar, Oeste e Vale do Tejo | 23°C | 9 | 230 km |
| Sardoal, Oeste e Vale do Tejo | 23°C | 9 | 238 km |
The nearest towns with a warmer May. Distances are in a straight line.
How May is changing
Town-level · ERA5-LandMay highs are 1.3°C warmer than in 1991-2000, and May rainfall is down about 40% (2016-2025 against 1991-2000). Days above 25°C in May went from 4.3 to 6.0 a year on average.
Questions about Caldelas in May
Is May a good time to visit Caldelas?
It is less suited to reliable dry weather (about 14 rainy days in the month).
How warm is Caldelas in May?
Average highs are 21°C and lows 11°C. April averages 18°C and June 24°C.
Does it rain much in Caldelas in May?
About 14 days have at least 1 mm of rain, with 150 mm in total over the month.
Is Caldelas busy in May?
In May 2025, nights booked through online platforms in Norte were about 55% 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 Caldelas in May?
About 14 h 30 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