Nowra is set to reach 31 degrees on the 25^th before reaching 33 degrees on Thursday. In Ulladulla Christmas Day will be warm and sunny with top temperatures of 27, increasing to 29 by Thursday. 

The warm temperatures can be attributed to a large high-pressure system will cover most of the country on Christmas Day, meaning the chance of rain is low and temperatures will be high.

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The possibility of heatwave conditions coinciding with the Christmas holiday period will have water safety agencies on high alert over the coming days.

With Christmas falling on a Tuesday many people are starting their holiday break from Friday, bringing forward the beginning of the holiday period.

“Big influxes of people descending on our beaches, coinciding with some possible extreme hot weather next week is the perfect storm unfortunately. Boxing Day and New Year’s Day are often the busiest days of the year for our volunteers and this year looks like no exception,” Surf Life Saving NSW CEO Steven Pearce said. 

The hot weather combined with the spirit of the season is also likely to see more people drinking and swimming, especially in the period from Christmas to New Year's Day.

"Please take care and watch out for each other these holidays. Swim between the flags, wear a lifejacket if you’re out on the water or rockfishing and don’t overestimate your abilities, particularly after a few drinks," said Steven Pearce.

Surf Life Saving volunteers and lifeguards will be on patrol around the state throughout the holidays, while Marine Rescue and Water Police will also be operational throughout what will be an extremely busy period. The Bureau of Meteorology will also maintain a full forecasting and warning service over the holiday period.