South Beach National Park – current water temperature and swimming conditions

Water Temperature in South Beach National Park: Daily Trends, Historical Records, and Forecast

⚠️ Water in this range feels cool but still manageable for many swimmers. Short to moderate swims are comfortable, especially in warm weather. Some people may prefer a wetsuit for longer stays, particularly when swimming actively or outside peak summer conditions.

It’s important to note that these swimming tips and recommendations apply only in settled weather. When air temperatures drop below 20°C — and sometimes even below 25°C — swimming can feel uncomfortable, even when water temperatures are relatively high.

Water Temperature Over the Last 30 Days

Over the past month, water temperatures in South Beach National Park have stayed mostly steady, but a warming trend has developed over the last week.

According to our forecast, Sea water temperature in South Beach National Park will be 20.3°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Annual Water Temperature Overview by Month

Monthly Water Temp Ranges

30°C

25°C

20°C

15°C

10°c

5°C

0°C

Annual Water Temperature Trend

South Beach National Park, near Warrell Creek on the Mid North Coast of New South Wales, fronts the open Tasman Sea and has water temperatures that shift clearly with the seasons. Summer brings the warmest conditions, with sea temperatures usually around 22–26 °C, making the water feel inviting on hot days. In autumn, the temperature eases back to roughly 20–23 °C, still comfortable for most swimmers. Winter is noticeably cooler, with the ocean commonly sitting between 17–20 °C, while spring slowly warms the sea again from about 18 °C into the low twenties as conditions become more settled.