Blue Bay – current water temperature and swimming conditions

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

According to our forecast, Sea water temperature in Blue Bay will be 18.2°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

Blue Bay, on the Central Coast of New South Wales, sits right on the Tasman Sea and is known for relatively comfortable water temperatures across most of the year. In summer, the ocean usually warms to around 22–26 °C, which feels ideal for long swims and relaxed time in the water. Autumn brings a gentle cooling, with sea temperatures typically in the range of 20–23 °C. Winter is cooler but still manageable for many swimmers, generally around 16–20 °C, while spring sees a steady warm-up from about 18 °C into the low twenties as weather conditions settle and days become milder.