Bunbury – current water temperature and swimming conditions

Water Temperature in Bunbury: 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

Water temperatures in Bunbury 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 Bunbury will be 18.7°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

Bunbury sits on the Perth South Coast where the Indian Ocean meets a mix of open beaches and sheltered bays, giving swimmers a good range of conditions. Water temperatures here are comfortable for much of the year. In summer, from December to February, the sea typically ranges between 20–23°C, feeling warm and inviting on sunny days. Autumn remains pleasant at around 18–21°C, while winter cools things down to roughly 15–17°C, which is still manageable for shorter swims. Spring brings a gradual warm-up again, usually sitting between 17–20°C as air temperatures rise and calmer weather returns.