Wallaga Rivermouth – current water temperature and swimming conditions

Water Temperature in Wallaga Rivermouth: 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 30 days, water temperatures in Wallaga Rivermouth have generally increased, although a slight cooling trend has set in over the last week.

According to our forecast, Sea water temperature in Wallaga Rivermouth will be 17.6°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

Wallaga Rivermouth sits on the Far South Coast of New South Wales where the Wallaga Lake system meets the Tasman Sea, and water temperatures here reflect the cooler southern climate. In summer, ocean temperatures usually reach around 20–23 °C, while the river and lake waters can feel slightly warmer on calm, sunny days. Autumn often remains mild, with temperatures commonly between 18–21 °C, while spring is cooler at roughly 16–19 °C as the water gradually warms after winter. During winter, temperatures typically fall to about 14–16 °C, which can feel quite cold without a wetsuit and generally suits only short swims.