Weather in September
Temperature
The shift from August to September introduces a subtle increase in the average high-temperature, moving from a chilly 8.6°C (47.5°F) to a cool 11.9°C (53.4°F). During September, the nighttime temperature averages of 1.5°C (34.7°F).Humidity
The least humid month in Mount Cook is September, with an average relative humidity of 72.4%.Rainfall
In September, in Mount Cook, the rain falls for 13.7 days. Throughout September, 297mm (11.69") of precipitation is accumulated. In Mount Cook, during the entire year, the rain falls for 163.4 days and collects up to 4485mm (176.57") of precipitation.Daylight
The average length of the day in September is 11h and 47min.On the first day of the month, sunrise is at 7:06 am and sunset at 6:12 pm NZST. On the last day of September, sunrise is at 7:13 am and sunset at 7:45 pm NZDT.
Note: On Sunday, 29. September 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from NZST to NZDT. Daylight Saving Time lasts until Sunday, 06. April 2025, at 3:00 am; consequently, the time zone reverts from NZDT to NZST.
Sunshine
The average sunshine in September in Mount Cook is 4.3h.Frequently asked questions
What are September temperatures in Mount Cook?
What is the least humid month in Mount Cook?
What is the average humidity in September in Mount Cook?
How much does it rain in Mount Cook in September?
How many hours of daylight does Mount Cook have in September?
When is the sunrise / sunset in September in Mount Cook?
When does Daylight Saving Time (DST) start in September in Mount Cook?
How many hours of sunshine does Mount Cook have in September?
Average temperature in September
Mount Cook, New Zealand
- Average high temperature in September: 11.9°C
The warmest month (with the highest average high temperature) is February (20.7°C).
The month with the lowest average high temperature is July (6.5°C).
- Average low temperature in September: 1.5°C
The month with the highest average low temperature is January (9°C).
The coldest month (with the lowest average low temperature) is July (-2.2°C).
Average humidity in September
Mount Cook, New Zealand
- Average humidity in September: 72.4%
The month with the highest relative humidity is June (83.2%).
The month with the lowest relative humidity is September (72.4%).
Average rainfall in September
Mount Cook, New Zealand
- Average rainfall in September: 297.4mm
The wettest month (with the highest rainfall) is December (487.2mm).
The driest month (with the least rainfall) is February (278.4mm).
Average rainfall days in September
Mount Cook, New Zealand
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is October (16.7 days).
The month with the least rainy days is February (10.9 days).
Average daylight in September /
Average sunshine in September
Mount Cook, New Zealand
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 15h and 24min).
The month with the shortest days is June (Average daylight: 9h and 0min).
- Average sunshine in September: 4h and 2min
The months with the most sunshine are January and February (Average sunshine: 6h and 0min).
The month with the least sunshine is June (Average sunshine: 2h and 12min).
Mount Cook, New Zealand
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