Bonny Hills – current water temperature and swimming conditions

Water Temperature in Bonny Hills: 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

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

According to our forecast, Sea water temperature in Bonny Hills will be 20.3°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

Bonny Hills is a quiet coastal town on the Mid North Coast of New South Wales, looking straight out over the Tasman Sea. Water temperatures here are typical for the region and remain reasonably comfortable for much of the year. In summer, the ocean usually warms to around 22–26 °C, making conditions suitable for extended swims. Autumn brings a gradual cooling, with water temperatures commonly between 20–23 °C. Winter is cooler but still swimmable for many, with the sea generally sitting in the 17–20 °C range. Spring marks a steady warm-up from about 18 °C into the low twenties as the weather settles.