September weather forecast
Trentham, New Zealand

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September

Weather in September

The first month of the spring, September, is still a cool month in Trentham, New Zealand, with an average temperature ranging between min 7.9°C (46.2°F) and max 12.3°C (54.1°F).

Temperature

September observes an average high-temperature of a still fresh 12.3°C (54.1°F), marking an insignificant difference from August's 11.5°C (52.7°F). In Trentham, the nighttime temperature shows a slight difference from the daytime high, averaging to a chilly 7.9°C (46.2°F) during September.

Humidity

The average relative humidity in September in Trentham is 82%.

Rainfall

In Trentham, in September, it is raining for 15.5 days, with typically 46mm (1.81") of accumulated precipitation. In Trentham, during the entire year, the rain falls for 172.3 days and collects up to 622mm (24.49") of precipitation.

Snowfall

January through July, September through December are months without snowfall in Trentham.

Daylight

In September, the average length of the day in Trentham is 11h and 49min.
On the first day of September, sunrise is at 6:44 am and sunset at 5:55 pm NZST. On the last day of the month, sunrise is at 6:55 am and sunset at 7:24 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 Trentham, New Zealand, is 7.1h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 4 translates into these guidelines:
Take precautions - Protection against sun damage is advised. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Updated: Jan 27, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Trentham in September?
The average high-temperature, in September, in Trentham, is 12.3°C (54.1°F), while the average low-temperature is 7.9°C (46.2°F).
What is the average humidity in September in Trentham?
In September, the average relative humidity is 82%.
How much does it rain in Trentham in September?
In September, the rain falls for 15.5 days. Throughout September, 46mm (1.81") of precipitation is accumulated.
When it does not snow in Trentham?
In Trentham, New Zealand, snow does not fall in January through July, September through December.
Does it snow in Trentham in September?
In September, it doesn't snow. August is the latest month when it typically snows.
What is the average length of the day in September in Trentham?
The average day length in September is 11h and 49min.
When is the sunrise / sunset in September in Trentham?
On the first day of September in Trentham, New Zealand, sunrise is at 6:44 am and sunset at 5:55 pm NZST. On the last day of the month, sunrise is at 6:55 am and sunset at 7:24 pm NZDT.
When does Daylight Saving Time (DST) start in September in Trentham?
On Sunday, 29. September 2024, at 2:00 am, Daylight Saving Time starts in Trentham, New Zealand, and the time zone changes from NZST to NZDT. DST ends on Sunday, 06. April 2025, at 3:00 am.
How long on average sun shines in September in Trentham?
In Trentham, the average sunshine duration in September is 7.1h.
How high is the UV index in September in Trentham?
The average daily maximum UV index in September in Trentham is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASeptemberOND
Aug
September
Oct
Average high temperature
11.5°C
12.3°C
14°C
Average low temperature
7.4°C
7.9°C
8.7°C
Average pressure
1013.4mbar
1012.4mbar
1012.6mbar
Average wind speed
17.6km/h
20.6km/h
20.4km/h
Average max. wind speed
18.6km/h
21.2km/h
21.5km/h
Average wind speed gusts
26.6km/h
30.6km/h
29.5km/h
Average humidity
83%
82%
81%
Average rainfall
56mm
46mm
60mm
Average rainfall days
17.2
15.5
17.5
Average snowfall days
0.1
0
0
Average daylight
10h 3min
11h 5min
13h 1min
Average sunshine
6h 3min
7h 1min
7h 1min
Average sunshine days
11.8
10.7
10.8
Average UV index
3
4
4
Average cloud cover
46%
43%
42%
Average visibility
9km
9km
9km
Average temperature in September
Trentham, New Zealand
  • Average high temperature in September: 12.3°C

The warmest month (with the highest average high temperature) is February (19.7°C).
The month with the lowest average high temperature is July (10.8°C).

  • Average low temperature in September: 7.9°C

The month with the highest average low temperature is February (13.9°C).
The coldest month (with the lowest average low temperature) is July (7.1°C).

Average pressure in September
Trentham, New Zealand
  • Average pressure in September: 1012.4mbar

The month with the highest atmospheric pressure is March (1017.8mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).

Average wind speed in September
Trentham, New Zealand
  • Average wind speed in September: 20.6km/h

The windiest month (with the highest average wind speed) is September (20.6km/h).
The calmest month (with the lowest average wind speed) is March (16.9km/h).

Average humidity in September
Trentham, New Zealand
  • Average humidity in September: 82%

The month with the highest relative humidity is June (84%).
The months with the lowest relative humidity are January, February and November (80%).

Average rainfall in September
Trentham, New Zealand
  • Average rainfall in September: 46mm

The wettest months (with the highest rainfall) are June and July (66mm).
The driest month (with the least rainfall) is February (29mm).

Average rainfall days in September
Trentham, New Zealand
  • Average rainfall days in September: 15.5 days

The month with the highest number of rainy days is October (17.5 days).
The month with the least rainy days is February (9.2 days).

Average snowfall days in September
Trentham, New Zealand
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is August (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, September, October, November and December (0 days).

Average daylight in September /
Average sunshine in September
Trentham, New Zealand
  • Average daylight in September: 11h and 5min

The month with the longest days is December (Average daylight: 15h and 6min).
The month with the shortest days is June (Average daylight: 9h and 18min).

  • Average sunshine in September: 7h and 1min

The month with the most sunshine is November (Average sunshine: 8h and 48min).
The month with the least sunshine is June (Average sunshine: 4h and 54min).

Average sunshine days in September
Trentham, New Zealand
  • Average sunshine days in September: 10.7 days

The month with the most sunshine days is March (18.4 days).
The month with the least sunshine days is September (10.7 days).

Average UV index in September
Trentham, New Zealand
  • Average UV index in September: 4

The months with the highest UV index are January, February and December (UV index 5).
The months with the lowest UV index are May, June, July and August (UV index 3).

Average cloud cover in September
Trentham, New Zealand
  • Average cloud cover in September: 43

The month with the most cloud cover is June (Cloud cover 49).
The month with the least cloud cover is February (Cloud cover 34).

Average visibility in September
Trentham, New Zealand
  • Average visibility in September: 9km

The months with the highest visibility are February and March (10km).
The months with the lowest visibility are January, April, May, June, July, August, September, October, November and December (9km).

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