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Month guide · Mértola, Portugal

Mértola in March: weather and what to expect

In March, Mértola averages highs of 20°C and lows of 9°C, with about 7 rainy days and 47 mm of rain. Highs are 3°C warmer than in February and 2°C cooler than in April. Crowds in the Alentejo are low.

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

Average high Town-level20°CLow 9°C
Rainy days Town-level747 mm in total
UV index Modelled5Moderate at noon on a clear day
Crowds RegionalLowThe Alentejo as a whole

Is March a good time to visit?

Good for

No verdicts for Mértola in March 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 March

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

Highs climb about 2°C over the month. A day above 25°C happens in roughly 1 March in 2; nights below 5°C in about 1 in 2.

March in detail

Town-level · ERA5-Land
MeasureFebruaryMarchApril
Average high17°C20°C22°C
Average low7°C9°C11°C
Rainy days (at least 1 mm)678
Total rainfall39 mm47 mm48 mm
Daylight (mid-month)10 h 47 min11 h 53 min13 h 08 min

Crowds, holidays and daylight

Visitor level RegionalLowNights booked through online platforms in the Alentejo in March 2025: about 15% of the busiest month.

Public holidays in March 2027

  • 26 Mar Good Friday
  • 28 Mar Easter Sunday

Local (municipal) holidays are not included.

Daylight mid-month Exact11 h 53 minSunrise to sunset, calculated from the town's coordinates.

Warmer in March

Where is warm in March →

No town in Portugal with precise enough data has a warmer average March high than Mértola.

How March is changing

Town-level · ERA5-Land

March highs are 1.4°C cooler than in 1991-2000, and March rainfall is up about 145% (2016-2025 against 1991-2000). Days above 20°C in March went from 18 to 12 a year on average.

Questions about Mértola in March

How warm is Mértola in March?

Average highs are 20°C and lows 9°C. February averages 17°C and April 22°C.

Does it rain much in Mértola in March?

About 7 days have at least 1 mm of rain, with 47 mm in total over the month.

Is Mértola busy in March?

In March 2025, nights booked through online platforms in the Alentejo were about 15% 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 Mértola in March?

About 11 h 53 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