Sydneysiders are making the most of a warm winter, enjoying the outdoors at parks and beaches across the city.

Centennial Park hosted the fifth annual Science in the Swamp event, launching National Science Week, as children and dinosaurs alike enjoyed a warm August day in the park.

Children and dinosaurs alike enjoyed the warm weekend weather for "Science in the Swamp" at Centennial Park. Credit:Ryan Stuart

The sun was also shining on The Sun-Herald City2Surf with racers enjoying a warm and sunny day.

Sydney is set to experience more summer-like weather this week with temperatures set to reach the mid-20s across most of the city.