Cook Islands weather in September 2025
Cook Islands weather in September 2025
Day
26 °C
Night
21 °C
Sea
25 °C
Precipitation
98 mm
in month
Rainy days
5 days
in month
Daylight
12 hours
average
Day
26 °C
Night
21 °C
Sea
25 °C
Precipitation
98 mm
in month
Rainy days
5 days
in month
Daylight
12 hours
average
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Weather overview and FAQs
Weather overview
In September in Cook Islands, the average air temperature ranges from 26 °C (79 °F) during the day to 21 °C (70 °F) at night. There are 5 days of rain on average, where the rainfall is 98 mm (3.86 in).
Are there good conditions to visit in September in Cook Islands?
In Cook Islands in September, there are ideal conditions for a vacation. The daily temperatures in this month reach pleasant 26 °C (79 °F). The seawater temperature reaches ideal 25 °C (77 °F). At night, temperatures hover around a pleasant 21 °C (70 °F). There are only 5 days of rain in the whole month, so you can leave your umbrella at home.
What temperature can I expect during the day in September in Cook Islands?
In September in Cook Islands, the average daily temperatures will be 26 °C (79 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
What is the sea temperature in September in Cook Islands?
The temperature of the sea in Cook Islands in September is 25 °C (77 °F). It will be comfortable for you to spend even a long time in a sea warm like this, there will be people for whom this temperature will be too low or too high.
How long is the day (from dawn till dusk) in Cook Islands in September?
The length of daylight in Cook Islands in September is 12 hours.
How many days of precipitation on average can I expect in Cook Islands in September?
In Cook Islands in September, we can expect 5 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 1.1 days of the week, or in general - 16 % days.
What is the night temperature in Cook Islands in September?
The average night temperature in Cook Islands in September is 21 °C (70 °F). A very pleasant temperature for long evening walks, fun over a drink outside, or doing sports in the morning. If possible, look for a hotel with air conditioning.
Is there a dry season in Cook Islands in September?
Yes, there is a dry season in September in Cook Islands with just 5 days during the month being rainy.
Is the temperature rising or falling in the course of time in Cook Islands in September?
Over the course of September in Cook Islands, the temperatures are rising from 26 °C (79 °F) at the beginning of the month to 27 °C (80 °F) at the end of the month.
Is Cook Islands rainier in September than in August?
Yes, Cook Islands is a rainier September than in August.
Is the weather in Cook Islands warmer in September than in October?
No, September is not warmer in Cook Islands than October.
How windy is it in Cook Islands in September?
An average wind scale that can be expected in Cook Islands in September is 5.