Hyams Beach – current water temperature and swimming conditions

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

⚠️ This is cool water that may feel brisk on entry. Swimming is usually limited to short sessions, and prolonged stays can become uncomfortable without thermal protection. Many swimmers choose a wetsuit, especially for surfing or open-water swimming.

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

While water temperatures in Hyams Beach declined overall during the past month, they have shown a noticeable rebound over the last week.

According to our forecast, Sea water temperature in Hyams Beach will be 18.0°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

Hyams Beach sits inside Jervis Bay on the South Coast of New South Wales, linked to the Tasman Sea but protected from its harsher conditions. Water temperatures here follow a steady seasonal cycle. In summer, the water usually warms to around 21–24 °C, which is comfortable for extended swims and relaxed time in the sea. Autumn often stays mild, with temperatures commonly between 19–22 °C, while spring is cooler at roughly 17–20 °C as the bay gradually warms. During winter, water temperatures generally drop to about 16–18 °C, which can feel brisk but is still suitable for short swims, especially on clear, calm days.