Te Henga / Bethells Beach – current water temperature and swimming conditions

Water Temperature in Te Henga / Bethells Beach: 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

While water temperatures in Te Henga / Bethells 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 Te Henga / Bethells Beach will be 17.8°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

Te Henga, also known as Bethells Beach, lies on Auckland’s dramatic west coast, open to the Tasman Sea and backed by dunes and cliffs. Sea temperatures here are similar to other upper North Island west coast beaches, though the exposed setting can make the water feel cooler than the numbers suggest. In summer, from January through March, water temperatures generally range between 18 and 21°C, which many locals consider swimmable on a warm, settled day. During autumn, the sea usually sits between 16 and 19°C. Winter brings cooler conditions, often around 13 to 15°C, while spring sees a gradual rise from roughly 14 up to 17°C. Strong westerlies or large swells can mix the water and create short-term temperature changes.