Explainer: What Greater Sydney and NSW's new COVID-19 restrictions mean

Sydney and New South Wales has entered a more stringent coronavirus lockdown, with 10 new cases of community transmission reported in the 24 hours to 8pm last night and tough new restrictions imposed this afternoon.

A further 13 new cases were diagnosed after the 24-hour cut off, which will be included in tomorrow's official numbers.

Here's what we know about the new restrictions.

What areas are affected?

Greater Sydney, the Blue Mountains, Central Coast and Shellharbour.

When do new restrictions apply?

They started at 4pm on Wednesday, June 23. They last for one week.

What are the new restrictions?

• No more than five visitors to any household including children
• People must wear masks in public settings
• People must wear masks at work
• Hospitality venues will remain open but there is no standing
• No singing or dancing at any venues except for weddings
• No more than 20 people on the dance floor at a wedding
• One person per four square metres, which will affect numbers at funerals and weddings
• A recommendation of 50 per cent capacity at sports stadiums and venues
• People must wear masks at stadiums
• Gym classes limited to 20 but you must wear a mask
• Green dot seating plan is back in effect on public transport
• Those who live or work in the following seven LGAs must not leave metropolitan Sydney except for essential travel reasons: City of Sydney, Waverley, Randwick, Canada Bay, Inner West, Bayside and Woollahra

READ MORE: Every state's border rules for NSW as outbreak grows