Glenelg – current water temperature and swimming conditions

Water Temperature in Glenelg: Daily Trends, Historical Records, and Forecast

⚠️ Water in this range feels cool but still manageable for many swimmers. Short to moderate swims are comfortable, especially in warm weather. Some people may prefer a wetsuit for longer stays, particularly when swimming actively or outside peak summer conditions.

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 Glenelg 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 Glenelg will be 17.9°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

Glenelg is one of South Australia’s best-known seaside spots, set on the sheltered side of the Great Australian Bight and right on Adelaide’s doorstep. Water temperatures here are relatively mild by southern standards. In summer, from December through February, the sea usually sits around 18–21°C, warm enough for comfortable swims without feeling tropical. Autumn stays pleasant at about 17–19°C, while winter brings cooler conditions, commonly 13–15°C, when the water feels brisk but still manageable for short dips. Spring sees a gradual rise again, typically 15–17°C, with calmer days feeling surprisingly inviting.