Portugal extends restrictions on Spanish border until April 15. Spain to extend COVID-19-related international entry restrictions until April 30

Update. Portugal on Sunday extended restrictions on travel via land and sea to Spain that had been due to end this weekend until April 15. The two countries imposed the restrictions on Jan. 28. Nationals from Britain, Brazil and South Africa – where more contagious coronavirus variants were first detected – or any country with an infection rate above 500 cases per 100,000 people must quarantine for 14 days if they have entered via the land border.
Meanwhile, Greece it was extending restrictions on domestic flights until April 12 and on international flights until April 19.
Authorities in Spain have extended the nation’s ban on non-essential travel from countries outside the EU and Schengen Area until at least April 30.
However, travellers from some countries with low infection rates will be able to make the journey, including those from Australia, New Zealand, Rwanda, Singapore, South Korea, Thailand, China (subject to reciprocity) and the regions of Hong Kong and Macao, as there are Schengen-wide agreements allowing for this. Japan was excluded from the list on January 28th. 
As of 8 March, persons coming from the Federative Republic of Brazil, the Republic of South Africa, Republic of Botswana, Union of Comoros, Republic of Ghana, Republic of Kenya, Republic of Mozambique, United Republic of Tanzania, Republic of Zambia, Republic of Zimbabwe, Republic of Peru and Republic of Colombia, must remain in quarantine for 10 days after their arrival in Spain, or for the duration of their stay if it is shorter than that. The quarantine can be ended with a negative COVID-19 test taken on the seventh day of self-isolation. More information here