Kiama Downs – current water temperature and swimming conditions

Water Temperature in Kiama Downs: Daily Trends, Historical Records, and Forecast

✅ This water feels mild to warm and is comfortable for the majority of swimmers. Swimming is enjoyable, though longer stays may feel cooler for some people, especially in windy conditions. These temperatures are well suited to family outings and active swimming, particularly on warm days.

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 Kiama Downs 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 Kiama Downs will be 21.9°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

Kiama Downs lies just north of Kiama on the Illawarra coast, facing the open Tasman Sea, and water temperatures here reflect the seasonal rhythm of southern New South Wales. During summer, the ocean usually warms to around 21–24 °C, providing comfortable conditions for swimming and spending time in the water. Autumn often stays pleasantly mild, with temperatures commonly between 19–22 °C, while spring starts cooler at roughly 17–20 °C as the sea gradually heats up. In winter, water temperatures typically fall to about 16–18 °C, which can feel cold for extended swims, though short dips are still possible, especially on calm, sunny days.