Poor Knights Islands Sea Temperature

Updated Mon 04:42 (Pacific/Auckland)

New Zealand · Forecast updated Aug 10, 2026, 04:42 UTC

Current Sea Temperature

16.3°C

61.3°F

Cold water

Versus this month's average

Close to average

The August average in our archive is 16.4°C (61.5°F).

Recent trend

Holding fairly steady

Seven-day average: 16.4°C, versus 16.6°C in the prior seven days.

What to wear

Cold water

Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.

Cold tolerance varies. Wind, session length, sunshine, and exertion also affect comfort; temperature alone does not describe sea conditions.

Sea Surface Temperature Over the Year

In the data collected for Poor Knights Islands, monthly averages range from about 16.4°C (61.5°F) in August to 18.1°C (64.7°F) in June.

Over the past 30 days, the average sea temperature in Poor Knights Islands has been 16.7°C.

Month	Min	Average	Max
June	17.4°C / 63.3°F	18.1°C / 64.7°F	18.8°C / 65.8°F
July	16.5°C / 61.7°F	16.9°C / 62.5°F	17.4°C / 63.3°F
August	16.2°C / 61.2°F	16.4°C / 61.5°F	16.6°C / 61.9°F

Profile calculated from 1693 hourly forecast records across 3 monthly periods. This is a growing archive, not a long-term climate normal.

Subtropical reserve islands rated among the world's best for clear-water snorkeling.

The current sea surface temperature in Poor Knights Islands is 16.3°C. Over the last 30 days, the average has been 16.7°C.

The warmest monthly average in the Poor Knights Islands archive is June, at around 18.1°C (64.7°F).

The coldest monthly average in the archive is August, at around 16.4°C (61.5°F). A wetsuit is usually recommended during this period.

The water is 16.3°C. It may feel cool, but a wetsuit or short swims can help.

See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Poor Knights Islands.