Bulli – current water temperature and swimming conditions

Water Temperature in Bulli: 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 Bulli 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 Bulli will be 18.9°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

Bulli sits along the northern Illawarra coastline, with a wide sandy beach facing straight into the Tasman Sea. Water temperatures here follow the open-ocean seasonal cycle typical of this stretch of New South Wales. In summer, from December through March, the sea is generally at its warmest, sitting around 21–24 °C and feeling comfortable for most swimmers without a wetsuit. Autumn brings a gradual cool-down to roughly 19–21 °C. Winter is the coldest period, with water temperatures usually between 16–18 °C, while spring sees a steady warm-up back into the 18–20 °C range as currents and weather begin to shift.