Wollongong – current water temperature and swimming conditions

Water Temperature in Wollongong: 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 Wollongong 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 Wollongong will be 17.4°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

Wollongong sits on the Illawarra coast with a string of beaches opening straight onto the Tasman Sea, so water temperatures reflect full ocean conditions. The seasonal pattern is consistent across the area. In summer, from December through March, sea temperatures usually range between 21–24 °C, making swimming comfortable for most people without extra insulation. Autumn brings a gradual 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 steady warm-up back into the 18–20 °C range as currents and air temperatures begin to rise.