Tunkalilla Beach – current water temperature and swimming conditions

Water Temperature in Tunkalilla 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

Water temperatures in Tunkalilla Beach have been gradually cooling over the past month, with a further drop recorded during the last week.

According to our forecast, Sea water temperature in Tunkalilla Beach will be 19.8°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

Tunkalilla Beach lies on the southern Fleurieu Peninsula, facing directly into the Great Australian Bight, and its water temperatures reflect this fully exposed ocean setting. In summer, the sea is at its warmest, typically sitting around 18–21°C, which feels refreshing but still cool even on hot days. Autumn brings a gradual drop to roughly 16–19°C, while winter is noticeably cold, often around 13–15°C. Spring is slow to warm, with water temperatures commonly in the 14–17°C range, and sudden cool changes can occur after strong southerly winds and swell.