Month guide · Santo André (Santiago do Cacém), Alentejo

Santo André (Santiago do Cacém) in April: weather and what to expect

In April, Santo André (Santiago do Cacém) averages highs of 19°C and lows of 12°C, with about 10 rainy days and 57 mm of rain. Highs are 1°C warmer than in March and 2°C cooler than in May. Crowds in the Alentejo are low.

Based on 1991-2020 climate data · Updated 1 November 2026 · Sources

Average high Town-level19°CLow 12°C
Sea temperature Modelled15°COpen sea nearby, average for the month
Rainy days Town-level1057 mm in total
UV index Modelled7High at noon on a clear day
Crowds RegionalLowThe Alentejo as a whole

Is April a good time to visit?

Good for

No verdicts for Santo André (Santiago do Cacém) in April yet. They only use climate values that are precise enough to judge with.

Not ideal for

Nothing stands out as a weaker fit.

Daily highs through April

Town-level · ERA5-Land 1991-2020
Usual range (8 in 10 years)Typical high

Highs climb about 1°C over the month. A day above 25°C happens in roughly 1 April in 4; nights below 10°C in about 1 in 2.

April in detail

Town-level · ERA5-Land
MeasureMarchAprilMay
Average high18°C19°C21°C
Average low11°C12°C14°C
Rainy days (at least 1 mm)9107
Total rainfall57 mm57 mm39 mm
Daylight (mid-month)11 h 53 min13 h 09 min14 h 12 min

Crowds, holidays and daylight

Visitor level RegionalLowNights booked through online platforms in the Alentejo in April 2025: about 30% of the busiest month.

Public holidays in April 2027

  • 25 Apr Freedom Day

Local (municipal) holidays are not included.

Daylight mid-month Exact13 h 09 minSunrise to sunset, calculated from the town's coordinates.
PlaceHighRain daysFrom Santo André
Ermidas, Alentejo21°C936 km
Ferreira do Alentejo, Alentejo21°C858 km
Aljustrel, Alentejo20°C858 km
Odemira, Alentejo20°C953 km
Alcácer do Sal, Alentejo20°C942 km

The nearest towns with a warmer April. Distances are in a straight line.

How April is changing

Town-level · ERA5-Land

April highs are 0.6°C warmer than in 1991-2000, and April rainfall is about the same (2016-2025 against 1991-2000). Days above 20°C in April went from 8.2 to 9.3 a year on average.

Questions about Santo André (Santiago do Cacém) in April

How warm is Santo André (Santiago do Cacém) in April?

Average highs are 19°C and lows 12°C. March averages 18°C and May 21°C.

Does it rain much in Santo André (Santiago do Cacém) in April?

About 10 days have at least 1 mm of rain, with 57 mm in total over the month.

Is Santo André (Santiago do Cacém) busy in April?

In April 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 Santo André (Santiago do Cacém) in April?

About 13 h 09 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