Stanwell Park – current water temperature and swimming conditions

Water Temperature in Stanwell Park: 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

While water temperatures in Stanwell Park declined overall during the past month, they have shown a noticeable rebound over the last week.

According to our forecast, Sea water temperature in Stanwell Park will be 18.3°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

Stanwell Park sits at the northern end of the Illawarra coastline, opening onto the Tasman Sea beneath the escarpment. Water temperatures here follow the typical seasonal rhythm of New South Wales’ open ocean beaches. In summer, from December to March, the sea is generally at its warmest, ranging between 21–24 °C, which most swimmers find comfortable without a wetsuit. Autumn brings a gradual cooling to around 19–21 °C. Winter is noticeably colder, with water temperatures usually sitting between 16–18 °C, while spring marks a steady warm-up back into the 18–20 °C range as conditions improve.