Boulder Beach – current water temperature and swimming conditions

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

✅ Water in this range is comfortably warm and widely considered ideal for swimming. Most people can stay in the water for a long time without feeling cold. It works well for families, recreational swimming, and active water sports such as swimming, surfing, and paddleboarding.

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 Boulder 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 Boulder Beach will be 25.7°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

Boulder Beach sits on the far north coast of New South Wales, facing the Coral Sea and shaped by a warm subtropical climate. Water temperatures here are generally comfortable for swimming across much of the year. In summer, the ocean typically warms to around 25–27 °C, making the water inviting for longer swims. Autumn often holds onto that warmth, with temperatures commonly between 23–25 °C as weather conditions settle. Spring begins cooler at roughly 21–23 °C before steadily warming toward summer. Winter brings the lowest temperatures, but even then the sea usually sits around 19–21 °C, which many locals still find manageable on clear, sunny days.