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New ZealandThe weather in September in Aoraki/Mount Cook
It's cold in September in Aoraki/Mount Cook with an average temperature of 9°C. Temperatures this month range from a low of 7°C to a high of 10°C. At night, you can expect temperatures between -3°C and 1°C.
Looking for sun? September isn’t a good month to be in Aoraki/Mount Cook. There’s too much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Aoraki/Mount Cook, New Zealand. 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 22°C in 2020, Aoraki/Mount Cook reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was -2°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of -12°C to a highest value of 9°C.
Precipitation and snowfall
In September, there is an average of 233 mm of precipitation, spread over 22 days. Of the total precipitation, about 15 cm falls as snow in September. The wind speed is around 4 Bft, mostly coming from the West.
Daily weather in September for Aoraki/Mount Cook
Click on any day in September to get detailed info about the usual weather on that day in Aoraki/Mount Cook. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Aoraki/Mount Cook | New York | |
|---|---|---|
| Average temperature | 9°C | 27°C |
| Max. temperature | 10°C | 31°C |
| Min. temperature | -3°C | -5°C |
| Total precipitation | 233 mm | 57 mm |
| Rainy days | 22 days | 9 days |
| Total snowfall | 15 cm | 0 cm |
| Snowy days | 8 days | 0 days |
Start of September
The month of September starts in Aoraki/Mount Cook with cold temps, averaging around 8°C during the day and nights around -1°C.
Mid September
By mid-September, daytime temps rise to around 9°C, with nights around 0°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Aoraki/Mount Cook is around 10°C, while nighttime temps are about 0°C. There’s a significant chance of many days with precipitation.
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Aoraki/Mount Cook for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Aoraki/Mount Cook, New Zealand. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Aoraki/Mount Cook
Temperature in September in Aoraki/Mount Cook over the years
Precipitation charts
These charts show the average amount of precipitation in September in Aoraki/Mount Cook, New Zealand. 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 Aoraki/Mount Cook
Total precipitation in September in Aoraki/Mount Cook over the years
Daily Snowfall in September in Aoraki/Mount Cook
Snowfall in September in Aoraki/Mount Cook per year
Daily UV index in September in Aoraki/Mount Cook
This chart shows the average daily UV index in September in Aoraki/Mount Cook, 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 Aoraki/Mount Cook
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Average weather in Aoraki/Mount Cook by month
Click on a month below to see detailed weather info for Aoraki/Mount Cook. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.