Wattamolla – current water temperature and swimming conditions

Water Temperature in Wattamolla: 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

Over the past 30 days, water temperatures in Wattamolla have generally increased, although a slight cooling trend has set in over the last week.

According to our forecast, Sea water temperature in Wattamolla will be 22.7°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

Wattamolla is a unique coastal spot in the Illawarra region, where a calm lagoon meets the Tasman Sea behind a wide stretch of sand. Water temperatures here vary depending on whether you’re swimming in the lagoon or the ocean, but both follow the familiar seasonal cycle of the New South Wales coast. In summer, from December through March, ocean water temperatures usually sit around 21–24 °C, while the lagoon often feels slightly warmer on sunny days. Autumn sees a gradual drop to about 19–21 °C. Winter is cooler, typically around 16–18 °C, and spring brings a steady warm-up into the 18–20 °C range as conditions improve.