ClimateForecastSeptemberOctober >>

Weather in September in The Cook Islands

Considering a trip to the Cook Islands this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What is the weather like in the Cook Islands in September?

September in the Cook Islands generally has warm temperatures, with precipitation levels ranging from moderate to high.

Temperatures

The average maximum temperatures are warm and range from 25°C in Rarotonga to 29°C in Penrhyn. Nighttime temperatures generally drop to 26°C in Penrhyn and 22°C in Rarotonga.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Arutanga with an average of 79 mm to high rainfall in Pukapuka with 142 mm.

Average sunshine

Rarotonga enjoys a balanced 182 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

For a closer look at September's conditions in the Cook Islands, see the map below. For a more detailed look at the Cook Islands's yearly weather, check out our the Cook Islands climate page.

Where to go in the Cook Islands in September

Find more information for the most popular destinations in the the Cook Islands on the map below. Click on a destination dot for more detailes.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in September for the 5 most popular destinations in the Cook Islands?

Rarotonga

In September Rarotonga generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 22°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Rarotonga
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
25°C 
22°C 
191 hours 
80 mm 
14 days 
25°C 
22°C 
182 hours 
81 mm 
11 days 
October   >> October
>>  
25°C 
23°C 
183 hours 
98 mm 
9 days 
Climate in Rarotonga

Arutanga

In September Arutanga generally has high temperatures with maximum daytime temperatures around 26°C, minimum nighttime temperatures around 24°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Arutanga
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
26°C 
24°C 
187 hours 
71 mm 
15 days 
26°C 
24°C 
189 hours 
79 mm 
12 days 
October   >> October
>>  
27°C 
24°C 
184 hours 
105 mm 
10 days 
Climate in Arutanga

Arorangi

In September Arorangi generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 22°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Arorangi
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
25°C 
22°C 
191 hours 
80 mm 
14 days 
25°C 
22°C 
182 hours 
81 mm 
11 days 
October   >> October
>>  
25°C 
23°C 
183 hours 
98 mm 
9 days 
Climate in Arorangi

Avarua

In September Avarua generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 22°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Avarua
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
25°C 
22°C 
191 hours 
80 mm 
14 days 
25°C 
22°C 
182 hours 
81 mm 
11 days 
October   >> October
>>  
25°C 
23°C 
183 hours 
98 mm 
9 days 
Climate in Avarua

Muri

In September Muri generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 22°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Muri
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
25°C 
22°C 
191 hours 
80 mm 
14 days 
25°C 
22°C 
182 hours 
81 mm 
11 days 
October   >> October
>>  
25°C 
23°C 
183 hours 
98 mm 
9 days 
Climate in Muri

Is your destination not in the list? Have a look at other destinations in the Cook Islands.

Is September the best time to visit the Cook Islands?

We believe that September is one of the best times to visit the Cook Islands with overall perfect weather in Rarotonga.

On average, the best time to visit the Cook Islands is in June, August, September and October with generally perfect weather in Rarotonga. On the other hand, the weather in January, February and December tend to be unpleasant.

Interested in more climate information?

We have much more information about the climate in the Cook Islands. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to the Cook Islands? Get detailed historical weather averages for many cities in the Cook Islands.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.