North Fremantle – current water temperature and swimming conditions

Water Temperature in North Fremantle: 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

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

According to our forecast, Sea water temperature in North Fremantle will be 18.0°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

North Fremantle sits between the port city of Fremantle and Perth’s northern beaches, with direct access to long, sandy stretches along the Indian Ocean. Water temperatures here follow the familiar Perth City Coast pattern and suit swimming for much of the year. In summer, from December to February, the sea usually sits around 21–24°C, feeling warm and refreshing on hot days. Autumn remains comfortable at roughly 19–22°C, while winter brings cooler but still swimmable conditions, typically around 16–18°C. Spring sees a steady warm-up again, generally ranging between 18–21°C as air temperatures rise and conditions become more settled.