Mallacoota – current water temperature and swimming conditions

Water Temperature in Mallacoota: 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

Water temperatures in Mallacoota have been on a steady rise over the past month and have continued to climb over the last week.

According to our forecast, Sea water temperature in Mallacoota will be 18.8°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

Mallacoota sits right on the East Coast of Victoria near the entrance to the Bass Strait, and water temperatures here are noticeably cooler than further north in New South Wales. In summer, the ocean and inlet waters usually reach around 18–22 °C, which feels refreshing rather than warm but is still comfortable for swimming on sunny days. Autumn often stays mild, with temperatures commonly between 16–20 °C, while spring is cooler at roughly 14–18 °C as the sea slowly warms after winter. During winter, water temperatures typically drop to about 12–14 °C, which is quite cold and generally limits swimming to short dips or those wearing wetsuits.