May weather forecast
Portugal

May in Portugal welcomes the onset of warmer conditions, marking the transition towards summer. The national average temperature during this month rises to 18°C (64.4°F). Coastal cities like Lisbon and Porto continue to exhibit milder weather with Lisbon experiencing temperatures from 14°C (57.2°F) to 23°C (73.4°F), and Porto's temperatures ranging from 11°C (51.8°F) to 20°C (68°F).

As Portugal heads into its dry season, the rainfall in May continues to decrease. Lisbon sees an average precipitation of about 40mm (1.57"), while Porto has slightly more rainfall at approximately 70mm (2.76"). By May, snowfall in northern high-altitude regions like Serra da Estrela is virtually non-existent due to the warmer conditions.

Comparing May with the preceding month, April, there is a clear increase in temperatures and a further reduction in rainfall, indicating the progression towards summer. In contrast to the following month, June, May is typically slightly cooler and experiences marginally more rainfall. Despite this, the favorable weather conditions and blossoming natural scenery make May an excellent time for outdoor activities such as hiking, sightseeing, and enjoying Portugal's beautiful beaches.

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• Lisbon - May »
  On the last day of the month, in Lisbon, sunrise is at 06:13 and sunset at 20:54 WEST. On the first day of May in Lisbon, sunrise is at 06:39 and sunset at 20:28.
• Porto - May »
  May's weather in Porto records an average high-temperature of an agreeable 20.1°C (68.2°F), showing little deviation from April. In Porto, Portugal, the average seawater temperature in May is 16.5°C (61.7°F).
• Faro - May »
  In Faro, Portugal, in May, the average water temperature is 18.5°C (65.3°F). On the last day of May, in Faro, sunrise is at 06:13 and sunset at 20:44 WEST.
• Coimbra - May »
  On the first day of May in Coimbra sunrise is at 06:33 and sunset at 20:28. In Coimbra in May, it is raining for 12 days, with typically 80mm (3.15") of accumulated precipitation.
• Braga - May »
  In Braga during May, the rain falls for 11.2 days and regularly aggregates up to 47mm (1.85") of precipitation. In Braga, during the entire year, the rain falls for 139.7 days and collects up to 924mm (36.38") of precipitation.
• Aveiro - May »
  In Aveiro in May, during 10.6 rainfall days, 37mm (1.46") of precipitation is typically accumulated. On the first day of May in Aveiro, sunrise is at 06:33 and sunset at 20:30.
• Evora - May »
  On the last day of the month, in Evora, sunrise is at 06:09 and sunset at 20:49 WEST. In Evora, in May, it is raining for 8 days, with typically 47mm (1.85") of accumulated precipitation.
• Viseu - May »
  In Viseu in May, during 10.9 rainfall days, 31mm (1.22") of precipitation is typically accumulated. In Viseu in May, it is raining for 10.9 days, with typically 31mm (1.22") of accumulated precipitation.
• Funchal - May »
  On the last day of the month, in Funchal sunrise is at 07:01 and sunset at 21:09 WEST. May's weather in Funchal is characterized by an amplified spring feel as the temperature continues rising and the relative humidity remains constant.
• Guarda - May »
  On the first day of May in Guarda sunrise is at 06:28 and sunset at 20:24. In Guarda during the entire year, the rain falls for 113.4 days and collects up to 421mm (16.57") of precipitation.
• Beja - May »
  On the last day of the month, in Beja sunrise is at 06:10 and sunset at 20:47 WEST. The highest average temperature spikes to an evident 25.9°C (78.6°F), reflecting sunnier days and warmer nights in Beja.