Daytime highs, nighttime lows and the warmest cities across the Cook Islands this September.
The Cook Islands, experiences high average maximum daytime temperatures in September, ranging from 25°C (77°F) in Rarotonga to 29°C (84°F) in Penrhyn. Nighttime temperatures generally drop to 26°C (79°F) in Penrhyn and 22°C (72°F) in Rarotonga.
To get a sense of September's typical temperatures in the key spots of the Cook Islands, explore the map below. Click on a point for an in-depth look.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across the Cook Islands.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Drill down to September weather for any region in the Cook Islands.
Pick a city to see its September weather averages.
Rarotonga averages a daytime high of 25°C (77°F) in September, which is high for the Cook Islands.
Nighttime temperatures in Rarotonga typically drop to around 22°C (72°F) in September.
From a thorough analysis of our records, Penrhyn clearly dominates in terms of high temperatures. The city witnesses daytime temperatures hovering around 29°C (84°F), and evenings that remain near 26°C (79°F).
According to our data, Rarotonga holds the title for the coldest city in the Cook Islands in September. It experiences maximum temperatures of approximately 25°C (77°F) and drops to lows of about 22°C (72°F) during the night.
Rarotonga enjoys a balanced 182 hours of sunlight. This makes it neither too overcast nor too sunny.
We have much more information about the climate in the Cook Islands.
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.
Need travel inspiration? Check out our bucket list articles and be inspired.
