Hallett Cove – current water temperature and swimming conditions

Water Temperature in Hallett Cove: 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 Hallett Cove 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 Hallett Cove will be 17.8°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

Hallett Cove sits just south of Adelaide, along a rugged section of coastline that opens onto the Great Australian Bight, and its water temperatures reflect this southern ocean influence. In summer, the sea is at its most comfortable, usually around 19–22°C, which feels refreshing on warm days without being overly cold. Autumn brings a gradual cooling to roughly 17–20°C, while winter is noticeably cooler, often around 13–15°C. Spring sees a steady warm-up, with water temperatures commonly sitting between 15–18°C, shaped by sunshine, winds and calmer weather periods.