Augusta – current water temperature and swimming conditions

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

According to our forecast, Sea water temperature in Augusta will be 18.4°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

Augusta sits at the south-western tip of the Margaret River region, where the Indian Ocean meets Flinders Bay and the mouth of the Blackwood River. Water temperatures here reflect the cooler influence of the Southern Ocean, but they are still quite swimmable in the warmer months. During summer, from December to February, the sea usually sits around 19–22°C, which feels comfortable on sunny, settled days. Autumn brings a gentle cooling to about 17–20°C. Winter is noticeably colder, typically around 14–16°C, while spring sees a gradual warm-up again, usually reaching 16–18°C, though brisk winds can keep the water feeling fresh.