Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Castle Hill, New Zealand, commences September with an average high-temperature of a still wintry 5.5°C (41.9°F), maintaining a close resemblance to the previous month. Castle Hill, in September, experiences an average temperature of -1.1°C (30°F) at night.Humidity
The average relative humidity in September is 91%.Rainfall
In Castle Hill, in September, it is raining for 9.6 days, with typically 114mm (4.49") of accumulated precipitation. In Castle Hill, during the entire year, the rain falls for 162.6 days and collects up to 1501mm (59.09") of precipitation.Snowfall
Months with snowfall in Castle Hill are January through December. In September, it is snowing for 16.5 days. Throughout September, 428mm (16.85") of snow is accumulated. In Castle Hill, during the entire year, snow falls for 114.9 days and aggregates up to 3387mm (133.35") of snow.Daylight
In Castle Hill, the average length of the day in September is 11h and 47min.On the first day of September in Castle Hill, sunrise is at 6:59 am and sunset at 6:06 pm NZST. On the last day of the month, sunrise is at 7:07 am and sunset at 7:38 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 is 5.3h.UV index
In Castle Hill, the average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 2 translates into these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
How cold is September in Castle Hill?
What is the average humidity in September in Castle Hill?
How many days does it rain in September in Castle Hill?
How many days does it snow in September in Castle Hill?
What is the average length of the day in September in Castle Hill?
When is the sunrise / sunset in September in Castle Hill?
When does Daylight Saving Time (DST) start in September in Castle Hill?
How many hours of sunshine does Castle Hill have in September?
What is the UV index reading in September in Castle Hill?
Average temperature in September
Castle Hill, New Zealand
- Average high temperature in September: 5.5°C
The warmest month (with the highest average high temperature) is February (15.7°C).
The month with the lowest average high temperature is July (3.5°C).
- Average low temperature in September: -1.1°C
The months with the highest average low temperature are January and February (6.4°C).
The coldest month (with the lowest average low temperature) is July (-2.4°C).
Average pressure in September
Castle Hill, New Zealand
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is March (1017.3mbar).
The months with the lowest atmospheric pressure are September and November (1011.7mbar).
Average wind speed in September
Castle Hill, New Zealand
- Average wind speed in September: 11.2km/h
The windiest month (with the highest average wind speed) is January (12.6km/h).
The calmest month (with the lowest average wind speed) is August (9.8km/h).
Average humidity in September
Castle Hill, New Zealand
- Average humidity in September: 91%
The months with the highest relative humidity are July and August (92%).
The months with the lowest relative humidity are January and February (83%).
Average rainfall in September
Castle Hill, New Zealand
- Average rainfall in September: 114mm
The wettest month (with the highest rainfall) is November (176mm).
The driest month (with the least rainfall) is February (87mm).
Average rainfall days in September
Castle Hill, New Zealand
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is December (18.5 days).
The month with the least rainy days is July (7.3 days).
Average snowfall in September
Castle Hill, New Zealand
- Average snowfall in September: 428mm
The month with the highest snowfall is August (734mm).
The month with the least snowfall is January (9mm).
Average snowfall days in September
Castle Hill, New Zealand
- Average snowfall days in September: 16.5 days
The month with the highest number of snowfall days is August (20.3 days).
The month with the least snowfall days is February (0.8 days).
Average daylight in September /
Average sunshine in September
Castle Hill, New Zealand
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 15h and 18min).
The month with the shortest days is June (Average daylight: 9h and 0min).
- Average sunshine in September: 5h and 2min
The month with the most sunshine is December (Average sunshine: 8h and 0min).
The month with the least sunshine is June (Average sunshine: 4h and 18min).
Average sunshine days in September
Castle Hill, New Zealand
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is March (14.1 days).
The month with the least sunshine days is October (7.4 days).
Average UV index in September
Castle Hill, New Zealand
- Average UV index in September: 2
The month with the highest UV index is January (UV index 4).
The months with the lowest UV index are June and July (UV index 1).
Average cloud cover in September
Castle Hill, New Zealand
- Average cloud cover in September: 64
The month with the most cloud cover is October (Cloud cover 68).
The month with the least cloud cover is February (Cloud cover 55).
Average visibility in September
Castle Hill, New Zealand
- Average visibility in September: 7km
The months with the highest visibility are January, March and December (8km).
The month with the lowest visibility is August (6km).
Castle Hill, New Zealand
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