South Africa will move to lockdown alert level two from Monday.
President Cyril Ramaphosa made the announcement following a cabinet meeting.
The decision comes in light of the recent proportion of Covid-19 positive tests, among others.
Ramaphosa says positive tests have more than doubled in the last month, from 4% to more than 11%.
The nationwide curfew hours have also been tightened, and will now run from 11pm and 4am.