Aitutaki Lagoon Sea Temperature

Updated Sat 21:05 (Pacific/Rarotonga)

Cook Islands · Forecast updated Aug 8, 2026, 21:05 UTC

Current Sea Temperature

25.1°C

77.2°F

Warm water

Versus this month's average

Close to average

The August average in our archive is 25.2°C (77.4°F).

Recent trend

Holding fairly steady

Seven-day average: 25.3°C, versus 25.1°C in the prior seven days.

What to wear

Warm water

Most people are comfortable in swimwear or a light rash guard.

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 Aitutaki Lagoon, monthly averages range from about 25.2°C (77.4°F) in July to 26.5°C (79.7°F) in June.

Over the past 30 days, the average sea temperature in Aitutaki Lagoon has been 25.0°C.

Month	Min	Average	Max
June	26.1°C / 79.0°F	26.5°C / 79.7°F	27.2°C / 81.0°F
July	24.4°C / 75.9°F	25.2°C / 77.4°F	26.1°C / 79.0°F
August	25.1°C / 77.2°F	25.2°C / 77.4°F	25.5°C / 77.9°F

Profile calculated from 1662 hourly forecast records across 3 monthly periods. This is a growing archive, not a long-term climate normal.

Triangular lagoon of impossibly clear turquoise water and coral bommies.

The current sea surface temperature in Aitutaki Lagoon is 25.1°C. Over the last 30 days, the average has been 25.0°C.

The warmest monthly average in the Aitutaki Lagoon archive is June, at around 26.5°C (79.7°F).

The coldest monthly average in the archive is July, at around 25.2°C (77.4°F).

At 25.1°C, the water is usually comfortable for swimming and snorkeling.

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