Casuarina Beach – current water temperature and swimming conditions

Water Temperature in Casuarina Beach: 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

While water temperatures in Casuarina Beach declined overall during the past month, they have shown a noticeable rebound over the last week.

According to our forecast, Sea water temperature in Casuarina Beach will be 20.4°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

Casuarina Beach sits along the far north coast of New South Wales, facing the Coral Sea and influenced by warm subtropical waters. Water temperatures here stay inviting for most of the year, supporting regular swimming conditions. Through summer, the ocean commonly reaches around 25–27 °C, making the water comfortable for extended swims. Autumn often holds onto that warmth, with temperatures typically between 23–25 °C as conditions settle. Spring begins cooler at roughly 21–23 °C before steadily warming toward summer. Winter is the coolest season, but even then the sea usually remains around 19–21 °C, which many swimmers still find manageable on calm, sunny days.