Seal Rocks – current water temperature and swimming conditions

Water Temperature in Seal Rocks: 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 Seal Rocks 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 Seal Rocks will be 20.6°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

Seal Rocks, on the Mid North Coast of New South Wales and facing the Tasman Sea, is known for clear water and distinctly seasonal ocean temperatures. In summer, the sea is at its warmest, usually ranging from about 22–26 °C, which feels comfortable for long swims and snorkelling sessions. Autumn brings a gradual cooling, with water temperatures typically around 20–23 °C. Winter is cooler but still swimmable for many, with the ocean generally sitting between 17–20 °C. Spring sees a steady warm-up from roughly 18 °C into the low twenties as calmer weather becomes more common.