Coolum Beach – current water temperature and swimming conditions

Water Temperature in Coolum Beach: Daily Trends, Historical Records, and Forecast

✅ Water in this range is comfortably warm and widely considered ideal for swimming. Most people can stay in the water for a long time without feeling cold. It works well for families, recreational swimming, and active water sports such as swimming, surfing, and paddleboarding.

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 Coolum 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 Coolum Beach will be 25.8°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

Coolum Beach sits along the Sunshine Coast facing the Coral Sea, and water temperatures here stay comfortable for swimming through most of the year. In summer, from about December to March, the sea usually ranges between 24 and 26 °C, making the water warm enough for long swims without feeling overly hot. During winter, typically June to August, temperatures drop to around 19–21 °C, which can feel cool at first but is still pleasant on sunny days with light winds. Spring and autumn are often ideal, with water temperatures commonly sitting between 21–23 °C and generally stable coastal conditions.