Mosman Park – current water temperature and swimming conditions

Water Temperature in Mosman Park: 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

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

According to our forecast, Sea water temperature in Mosman Park will be 22.0°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

Mosman Park sits along Perth’s City Coast between Cottesloe and the Swan River mouth, giving it easy access to Indian Ocean beaches with generally reliable swimming conditions. Water temperatures here follow the familiar Perth coastal pattern and are comfortable for much of the year. In summer, from December to February, the sea usually ranges between 21–24°C, feeling warm and refreshing on hot days. Autumn stays pleasant at around 19–22°C, while winter brings cooler but still swimmable water, typically about 16–18°C. Spring sees a steady warm-up again, commonly sitting between 18–21°C as air temperatures rise and calmer weather returns.