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Where is warm in March? The warmest towns in Portugal

In March, the warmest towns in Portugal are Mértola, Castro Marim and Vila Real de Santo António, with average highs of 19.7°C, 19.3°C and 19.3°C. Across the 100 warmest towns, highs run from 18.1°C to 19.7°C.

Daytime high at least
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Sea warm enough to swim (20°C+)
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No town in Portugal reaches an average high of 22°C in March. Try a lower temperature or look at April.

Questions about warm places in March

Where in Portugal is warmest in March?

Mértola (Alentejo) has the highest average March high, 19.7°C, followed by Castro Marim (19.3°C) and Vila Real de Santo António (19.3°C).

Which regions have the warmest towns in March?

Of the 100 warmest towns in March, 37 in Oeste e Vale do Tejo, 34 in Algarve and 26 in Alentejo.

Which of the warmest towns is driest in March?

Among the 100 warmest towns, Castro Marim has the fewest rainy days in March: 6 days with at least 1 mm of rain, and an average high of 19.3°C.

How cool are March nights in the warmest towns?

Average March lows in the 100 warmest towns range from 7.5°C to 11.6°C.

Climate normals 1991-2020 from ERA5-Land, adjusted to each town's elevation. Rain days count days with at least 1 mm. Crowd levels are for each town's region as a whole (Eurostat, nights booked through online platforms). Methodology