In a statement on Friday the government said the lockdown was necessary given the surge of the deadly COVID-19 delta variant globally.
It said this was especially important as the country prepares for a limited re-opening of incoming flights which have been suspended for weeks because of worsening delta outbreaks in neighbouring countries.
It said Cabinet has approved the trial of the revised Lock-down plan for the Honiara Emergency Zone through a 36-hour lockdown from 6pm on Sunday 29th August to 6am Tuesday 31 August 2021.