Bundeena – current water temperature and swimming conditions

Water Temperature in Bundeena: 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 Bundeena 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 Bundeena will be 19.3°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

Bundeena sits on the southern edge of Sydney’s coastline near the entrance to Port Hacking, with nearby beaches exposed to the Tasman Sea but also influenced by more sheltered waters. Water temperatures here follow the familiar seasonal cycle of the Sydney South Coast. In summer, from December through March, the sea usually ranges between 21–24 °C, making conditions comfortable for most swimmers. Autumn brings a gentle cool-down to around 19–21 °C. Winter is the coldest period, with water temperatures typically sitting between 16–18 °C, while spring sees a gradual warm-up into the 18–20 °C range as the season changes.