Sea foam covers Sydney beach as coast prepares for battering

Sea foam is blanketing the coast alongside Sydney's northern seashores as a lot of the state braces for extra wild climate.

The froth is masking many of the sand at Collaroy Seaside, a stretch of the coast that was severely impacted by storms in 2016.

A controversial sea wall was partially put in on the seashore after homes have been washed into the ocean, however owners are involved their properties are nonetheless in danger.

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Sea foam has utterly coated Collaroy Seaside.(9News)

There's a multi-million-dollar sea wall beneath building to try to cease coastal erosion.(9News)

The $25 million 1.3-kilometres building stretches from Collaroy to South Narrabeen and many of the price is being bankrolled by round 50 owners.

The remaining 20 per cent is cut up between Northern Seashores Council and the NSW Authorities.

However the construction has divided locals, with many describing it as an eyesore, and there are issues it might wipe out the seashore completely.

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A lot of Sydney and the NSW coast is bracing for a battering.(9News)

The wall is ready to be seven metres tall, however three-quarters will then be lined by sand introduced onto the seashore.

It comes as a lot of central jap NSW stays on excessive alert as a harmful rain bomb that has brought about lethal flooding in Queensland and Northern NSW makes its means down the coast.

As much as 200mm of rain is forecast to hit Sydney later within the day, and the NSW South Coast can also be within the firing line.