D'Estrees Bay – current water temperature and swimming conditions

Water Temperature in D'Estrees Bay: Daily Trends, Historical Records, and Forecast

⚠️ This is cool water that may feel brisk on entry. Swimming is usually limited to short sessions, and prolonged stays can become uncomfortable without thermal protection. Many swimmers choose a wetsuit, especially for surfing or open-water swimming.

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 D'Estrees Bay 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 D'Estrees Bay will be 17.9°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

D’Estrees Bay stretches along the southern coast of Kangaroo Island, facing the open waters of the Great Australian Bight, and its water temperatures reflect that clean, southern ocean influence. In summer, the sea is at its most inviting, usually sitting around 17–20°C, which feels cool but refreshing on warm days. Autumn brings a gradual drop to roughly 15–18°C, while winter is noticeably cold, often around 12–14°C. Spring is slow to warm, with water temperatures commonly between 13–16°C, influenced by winds, swell and changing weather patterns.