September is a popular month to ask about Aitutaki Lagoon because conditions can shift week to week along this coast. Expect the water near 23.0°C, with daily variation from wind, tides and recent storms. We refresh the live value from Open-Meteo Marine every hour, so the headline above always reflects the current state of the Pacific Ocean.
Aitutaki Lagoon sea temperature in September — averages 23.0°C
The sea at Aitutaki Lagoon in Cook Islands averages 23.0°C during September, based on long-run climatology for the Pacific Ocean. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · September
23.0°C
warm · Excellent
Live water now
…
Recommended wetsuit
Rash vest or swimsuit
At 23.0°C most swimmers and surfers are comfortable in a swimsuit or thin rash top.
Monthly comparison
Yes — comfortable for most swimmers · Aitutaki Lagoon
Can you swim at Aitutaki Lagoon in June? — 22.0°C water22.0°CCan you swim at Aitutaki Lagoon in July? — 23.0°C water23.0°CCan you swim at Aitutaki Lagoon in August? — 23.0°C water23.0°CCan you swim at Aitutaki Lagoon in September? — 23.0°C water23.0°CCan you swim at Aitutaki Lagoon in October? — 22.0°C water22.0°CCan you swim at Aitutaki Lagoon in November? — 21.0°C water21.0°C
Frequently asked questions
What is the average sea temperature at Aitutaki Lagoon in September?
Aitutaki Lagoon averages 23.0°C in September, based on long-run climatology for the Pacific Ocean.
Is the sea warm enough to swim at Aitutaki Lagoon in September?
Yes, most swimmers find 23.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Aitutaki Lagoon in September?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.