In Nowra, the winds on Monday were constantly between 30 kilometres per hour and 50km/h with a gust of 72km/h recorded around midday.

Gusts of 67km/h and 65km/h were recorded in the morning and afternoon.

So far on Tuesday the winds have ranged between 26-33km/h with the largest gust 51km/h at 8.15am.

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The cold, wind chill factor, has really affected temperatures and while the thermometer said Nowra hit a top of 15 degrees on Monday, for most of the day the temperature felt like it was in the minus.

At 3.20pm the temperature was 13.4 degrees but felt like -4.2.

Likewise Tuesday morning the temperature was 14 at 9.50am but felt like -0.1

Out on the coast, Jervis Bay and in particular Point Perpendicular recorded the biggest reading of wind gusts on Monday with 83km/h at 10am.

The winds dropped mid-afternoon but gusts in the mid 30s were recorded.

Temperatures were also cold, feeling like minuses from 10.50am through to 11pm.

Ulladulla recorded a gust of 57km/h at 4.30am on Monday, with 56km/h at 12.10am and 9.30am.

On Tuesday the highest reading so far was 35km/h at 6am.

The BOM's hazardous surf warning extends through to midnight Wednesday, August 21, with surf and swell conditions developing Tuesday afternoon and evening expected to be hazardous for coastal activities such as rock fishing, boating, and swimming in the following areas.

Wednesday's warning again takes in the Illawarra, Batemans and Eden coasts.

NSW Police and Marine Area Command advise people should consider staying out of the water and avoid walking near surf-exposed areas.

Rock fishers should avoid coastal rock platforms exposed to the ocean and seek a safe location that is sheltered from the surf.

Boaters planning to cross shallow water and ocean bars should consider changing or delaying their voyage.

Boaters already on the water should carry the appropriate safety equipment and wear a lifejacket.

Boaters should remember to log on with their local Marine Rescue radio base, via VHF Radio or the Marine Rescue APP, and consider their safety management plan.