Kiama Downs – current water temperature and swimming conditions

Water Temperature in Kiama Downs: 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 Kiama Downs have been on a steady rise over the past month and have continued to climb over the last week.

According to our forecast, Sea water temperature in Kiama Downs will be 19.1°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.