Cook Islands weather
Our guide to the weather in Cook Islands during September
We've looked at the most up-to-date weather data for Cook Islands, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Cook Islands weather in September.
How warm is it in Cook Islands during September?
The temperature is extremely stable in September with average highs of 24℃ and lows just 1℃ lower at 23℃. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.
Does it rain in Cook Islands during September?
On average, there will be 3 rainy days during the month, amounting to 82.6mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Cook Islands during September?
Expect moderate breeze becoming stronger at times during September, with occasional gusts up to 21mph. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.
Weather in Cook Islands
Our month-by-month guide to the weather and climate in Cook Islands
Cook Islands weather in
JanuaryCook Islands weather in
FebruaryCook Islands weather in
MarchCook Islands weather in
AprilCook Islands weather in
MayCook Islands weather in
JuneCook Islands weather in
JulyCook Islands weather in
AugustCook Islands weather in
SeptemberCook Islands weather in
OctoberCook Islands weather in
NovemberCook Islands weather in
December