Nelson Bay – current water temperature and swimming conditions

Water Temperature in Nelson Bay: 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 Nelson Bay 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 Nelson Bay will be 22.4°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

Nelson Bay sits on the shores of Port Stephens in New South Wales, with water influenced by the Tasman Sea but moderated by the bay’s sheltered shape. Water temperatures here are generally comfortable for swimming across much of the year. In summer, the water usually warms to around 22–25 °C, making it ideal for long swims and relaxed time in the water. Autumn often stays pleasant, with temperatures commonly between 20–23 °C, while spring is a little cooler at roughly 18–21 °C as the water gradually warms. During winter, temperatures typically drop to about 16–18 °C, which can feel cool but is still swimmable for short dips, especially on sunny days.