Dunsborough – current water temperature and swimming conditions

Water Temperature in Dunsborough: Daily Trends, Historical Records, and Forecast

✅ This water feels mild to warm and is comfortable for the majority of swimmers. Swimming is enjoyable, though longer stays may feel cooler for some people, especially in windy conditions. These temperatures are well suited to family outings and active swimming, particularly on warm days.

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 Dunsboroughfell over the past month, but have levelled out during the last week.

According to our forecast, Sea water temperature in Dunsborough will be 22.2°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

Dunsborough sits on the sheltered curve of Geographe Bay at the northern end of the Margaret River region, and that protection has a big influence on water conditions. Sea temperatures here are some of the most comfortable in the south-west. In summer, from December to February, the water usually ranges between 20–23°C, often feeling pleasantly warm and calm. Autumn remains inviting at around 18–21°C, while winter cools things down to roughly 15–17°C, still manageable for short swims. Spring brings a steady warm-up again, generally sitting between 17–20°C as the weather settles.