Mullaloo – current water temperature and swimming conditions

Water Temperature in Mullaloo: 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 Mullaloo 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 Mullaloo will be 22.8°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

Mullaloo sits along Perth’s City Coast north of Hillarys, with a wide sandy beach facing the open Indian Ocean. Water temperatures here are typical of the northern metro coastline and are well suited to swimming 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 comfortable at around 19–22°C, while winter cools to roughly 16–18°C, which is brisk but still manageable for shorter swims. Spring brings a steady warm-up again, generally sitting between 18–21°C as air temperatures rise.