Shell Cove – current water temperature and swimming conditions

Water Temperature in Shell Cove: 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 Shell Cove declined overall during the past month, they have shown a noticeable rebound over the last week.

According to our forecast, Sea water temperature in Shell Cove 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

Shell Cove sits on the Illawarra coast facing the Tasman Sea and offers generally inviting water temperatures across much of the year. In summer, the sea usually warms to around 21–24 °C, making it comfortable for extended swims and a popular choice for families and casual beachgoers. Autumn often holds onto that warmth, with temperatures commonly between 19–22 °C, while spring starts cooler at roughly 17–20 °C as ocean conditions gradually improve. Winter is the chilliest period, when water temperatures can drop to about 16–18 °C, still swimmable for confident locals or those in a wetsuit, but brisk for anyone expecting tropical conditions.