Normal weather for Cook Islands in September
It's warm in September in Cook Islands with an average temperature of 26°C. Temperatures this month range from a low of 26°C to a high of 27°C. At night, you can expect temperatures between 20°C and 22°C.
In September, there is an average of 104 mm of precipitation, spread over 13 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Cook Islands in September |
New York | ||
---|---|---|---|
Average Temperature |
26°C | 27°C | |
High Temp |
27°C | 31°C | |
Low Temp |
26°C | 21°C | |
Total Precipitation |
104 mm | 57 mm | |
Rainy Days |
13 days | 9 days |
Start of September
The month of September starts in Cook Islands with hot temps, averaging around 27°C during the day and nights around 22°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, a T-shirt, light pants or skirt, and a light jacket are ideal.
Mid September
By mid-September, daytime temps stay steady at around 27°C, with nights around 22°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
Since it cools down at night, it’s a good idea to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, a T-shirt, light pants or skirt, and a light jacket are ideal.
End of September
By the end of September, the average daytime temperature in Cook Islands is around 27°C, while nighttime temps are about 22°C. A shower might pop up, but overall, the weather will be dry and sunny.
Because temperatures drop in the evening, wearing layers is recommended. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, a T-shirt, light pants or skirt, and a light jacket are ideal.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Cook Islands?
Looking for sun? September isn’t a good month to be in Cook Islands. The temperature is nice, but there’s too much chance of rain.
Temperature records for Cook Islands in September
Check out the climate of Cook Islands for all months and discover the best travel time
The climate in Cook Islands is based on weather data from Avarua. Other spots might have different weather. You can check out all destinations in Cook Islands to get the full picture of the climate.
Daily Temperature in September in Cook Islands
This chart shows the average daily high and low temperatures in September for Cook Islands, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Cook Islands
The chart below shows the average daily precipitation in September for Cook Islands, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 13 days of precipitation in Cook Islands.
Daily UV Index in September in Cook Islands
This chart shows the average daily UV index in September in Cook Islands, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Cook Islands Over the Years
This chart shows the average temperature in September in Cook Islands, measured in degrees Celsius, over the past few years.
Total Precipitation in September in Cook Islands Over the Years
This chart shows the average precipitation in September in Cook Islands, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in September for Cook Islands
Click on any day in September to get detailed info about the usual weather on that day in Cook Islands. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Cook Islands
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Average Weather in Cook Islands by Month
Click on a month below to see detailed weather info for Cook Islands. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Cook Islands for all months at once