Muriwai – current water temperature and swimming conditions

Water Temperature in Muriwai: 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

Water temperatures in Muriwai 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 Muriwai will be 17.9°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

Muriwai, on Auckland’s west coast, is a well-known black sand beach facing the Tasman Sea. The water temperature here follows a clear seasonal pattern typical of the upper North Island. In summer, especially from January to March, sea temperatures usually range between 18 and 21°C. This is when most people find it comfortable enough for swimming, although the water can still feel a bit fresh at first. Through autumn, temperatures generally sit around 16 to 19°C. In winter, the sea cools to about 13 to 15°C, making swims noticeably brisk, while spring sees a gradual rise from roughly 14 up to 17°C as the warmer months approach. Conditions can vary slightly depending on winds and swell, which sometimes bring cooler water to the surface.