Long Beach – current water temperature and swimming conditions

Water Temperature in Long Beach: 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 Long Beach 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 Long Beach will be 17.8°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

Long Beach stretches along the Limestone Coast of South Australia, facing the cool waters of the Great Australian Bight, and this open exposure shapes water temperatures throughout the year. In summer, the sea is at its warmest, usually sitting between about 18–22°C, which feels cool but comfortable on warm, sunny days. Autumn brings a gradual drop to around 16–19°C, while winter is noticeably colder, often in the 13–15°C range. Spring sees a slow and steady warm-up, with water temperatures commonly hovering between 14–17°C, influenced by sunshine, wind direction and changing weather systems.