Portugal prepara-se para onda de calor com temperaturas a chegar aos 30 graus.

Termómetros deverão subir até 10 graus a partir de quarta-feira, com tempo mais quente sobretudo nas regiões centro e sul do país.

Depois de vários dias marcados por temperaturas amenas e alguma instabilidade, Portugal continental prepara-se para uma subida significativa dos termómetros já na próxima semana. De acordo com previsões do Instituto Português do Mar e da Atmosfera, os valores máximos poderão aproximar-se dos 30 graus a partir de quarta-feira, 20 de maio.

A subida será sentida praticamente em todo o território continental, com aumentos que poderão atingir os 10 graus face às temperaturas registadas no início da semana. As regiões do centro e sul deverão ser as mais afectadas pelo calor, enquanto no norte, incluindo a cidade do Porto, as máximas deverão rondar os 25 graus.

Até terça-feira, o tempo continuará relativamente estável, com temperaturas próximas dos 20 graus, mantendo o padrão registado nos últimos dias.

Segundo os meteorologistas, esta alteração resulta da aproximação de uma massa de ar quente proveniente do norte de África, fenómeno habitual nesta altura do ano e que poderá marcar o início de um período mais seco e tipicamente primaveril em Portugal.

As autoridades recomendam especial atenção à exposição solar durante as horas de maior calor, sobretudo para crianças, idosos e pessoas com problemas respiratórios. Também é aconselhado o reforço da hidratação e o uso de protecção solar nos dias mais quentes.

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