Month guide · Rio Maior, Portugal

Rio Maior in April: weather and what to expect

In April, Rio Maior averages highs of 19°C and lows of 11°C, with about 10 rainy days and 67 mm of rain. Highs are 1°C warmer than in March and 3°C cooler than in May. Crowds in Oeste e Vale do Tejo are low.

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

Average high Town-level19°CLow 11°C
Rainy days Town-level1067 mm in total
UV index Modelled6High at noon on a clear day
Crowds RegionalLowOeste e Vale do Tejo as a whole

Is April a good time to visit?

Good for

No verdicts for Rio Maior in April yet. They only use climate values that are precise enough to judge with.

Not ideal for

  • Reliable dry weather
    About 10 rainy days in the month

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 2.

April in detail

Town-level · ERA5-Land
MeasureMarchAprilMay
Average high18°C19°C22°C
Average low9°C11°C13°C
Rainy days (at least 1 mm)9109
Total rainfall65 mm67 mm59 mm
Daylight (mid-month)11 h 53 min13 h 12 min14 h 18 min

Crowds, holidays and daylight

Visitor level RegionalLowNights booked through online platforms in Oeste e Vale do Tejo in April 2025: about 25% of the busiest month.

Public holidays in April 2027

  • 25 Apr Freedom Day

Local (municipal) holidays are not included.

Daylight mid-month Exact13 h 12 minSunrise to sunset, calculated from the town's coordinates.

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 up about 30% (2016-2025 against 1991-2000). Days above 20°C in April went from 9.3 to 11 a year on average.

Questions about Rio Maior in April

Is April a good time to visit Rio Maior?

It is less suited to reliable dry weather (about 10 rainy days in the month).

How warm is Rio Maior in April?

Average highs are 19°C and lows 11°C. March averages 18°C and May 22°C.

Does it rain much in Rio Maior in April?

About 10 days have at least 1 mm of rain, with 67 mm in total over the month.

Is Rio Maior busy in April?

In April 2025, nights booked through online platforms in Oeste e Vale do Tejo were about 25% 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 Rio Maior in April?

About 13 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