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Cook IslandsThe weather in September in Avarua
It's warm in September in Avarua 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.
Looking for sun? September isn’t a good month to be in Avarua. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Avarua, Cook Islands. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 31°C in 2016, Avarua reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 22°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 14°C to a highest value of 25°C.
Rainfall amount
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.
Daily weather in September for Avarua
Click on any day in September to get detailed info about the usual weather on that day in Avarua. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Avarua | New York | |
|---|---|---|
| Average temperature | 26°C | 27°C |
| Max. temperature | 27°C | 31°C |
| Min. temperature | 20°C | -5°C |
| Total precipitation | 104 mm | 57 mm |
| Rainy days | 13 days | 9 days |
Start of September
The month of September starts in Avarua with hot temps, averaging around 27°C during the day and nights around 22°C.
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.
End of September
By the end of September, the average daytime temperature in Avarua 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.
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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.
Check out the climate of Avarua for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Avarua, Cook Islands. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Avarua
Temperature in September in Avarua over the years
Precipitation charts
These charts show the average amount of precipitation in September in Avarua, Cook Islands. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Avarua
Total precipitation in September in Avarua over the years
Daily UV index in September in Avarua
This chart shows the average daily UV index in September in Avarua, 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.
Weather experiences in September in Avarua
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Average weather in Avarua by month
Click on a month below to see detailed weather info for Avarua. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.