Seaford – current water temperature and swimming conditions

Water Temperature in Seaford: 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

Water temperatures in Seaford have been on a steady rise over the past month and have continued to climb over the last week.

According to our forecast, Sea water temperature in Seaford will be 16.0°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

Seaford sits on Adelaide’s southern coastline, opening onto the Great Australian Bight, and its water temperatures reflect a cool but manageable southern ocean climate. In summer, the sea is at its warmest and most inviting, usually ranging from about 19–22°C, which feels comfortable for swimming on hot days. Autumn brings a gradual cooling to roughly 17–20°C, while winter is noticeably colder, often around 13–15°C. Spring sees a steady warm-up, with water temperatures commonly sitting between 15–18°C, influenced by sunshine, winds and calmer weather patterns.