Rarotonga weather in September (Cook Islands)

What can you expect from the weather in Rarotonga during September? This guide provides all the details you need.

In Rarotonga the weather in September is generally perfect, characterized by high temperatures and moderate rainfall. Throughout the daytime, temperatures often hover around 25°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 22°C.

Rarotonga in September usually receives moderate rainfall, averaging around 81 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 11 days of the month will see rainfall.

The area experiences a moderate amount of sunshine, with approximately 182 hours of sunlight expected. This makes it neither too gloomy nor overly bright.

If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Rarotonga. June, August, September and October typically offer the most agreeable circumstances. On the other hand, January, February and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Rarotonga climate page with graphs.

 

Rarotonga, monthly averages in September

Min Temperature 22°C  

Max Temperature 25°C  

Chance of Rain 38%  

Precipitation 81 mm  

Rainy days 11 days  

Humidity 80%  

Windspeed 18 km/h  

Sunshine 182 hours  

Percentage Sunshine  

Where to go in the Cook Islands in September

Find out more about the weather in the Cook Islands in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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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).

So, what should you wear in Rarotonga in September?

For visitors traveling to Rarotonga, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming

7/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Rarotonga.

Our site offers climate and forecast data for every country in the world. Are you going to the Cook Islands? On this website you can find 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 climate conditions. Find out where to go with our weather planner.