Another lockdown, another swell.

This seems to be the trend in Sydney over the past year and a bit, with the stay at home faithful being blessed by excellent surf right out front every time the restrictions are tightened.

It's perfect for surfers to exercise their right to...um, exercise.

After last week's pumping and prolonged E/NE groundswell, the weekend just gone saw yet another large swell developing across central NSW eclipsing the size seen last Monday.

The catalyst for this swell was a rapidly deepening low pressure system directly east of the Sydney region. Despite being a 'low' off the 'east coast' it wasn't an East Coast Low, which has a particular meteorlogical definition: they travel parallel with the coast and bring damaging gale-force winds and flooding rains.

Instead, the system that brought the swell was a Tasman Low - a particularly powerful Tasman Low.

The swell producing Tasman Low. Source: Zoom.Earth

With a great fetch of easterly gales sitting offshore and winds wrapping south-west around the low on the coastal fringe, a gradual increase in size was seen Saturday, cleanest in protected spots as sets pushed to 6-8ft.

Sunday, however, revealed the peak in swell energy with 10 - 12ft waves out of the east-southeast hitting deepwater reefs and bommies under light offshore winds. The beaches were overpowered with only a select few reefs offering surfable waves in the morning before things became more settled into the afternoon.

Yesterday morning was smaller but still pumping, and today we're left with beautiful head-high surf under clear, sunny skies.

This series of shots were take on the weekend during the peak of the swell event.

Max Dodshon eyeing off the inside bowl

Matt Dunsmore coming from behind

Sam Nolan doing what he does best

Joey Keogh wrestling a heavy one from deep

Hamish Robertson checking ahead of a stand up pit

Jordy Lawler was the standout Sunday afternoon, paddling and making the best ones

Jordy Lawler paddle in again