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 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
September's presence marks an average high-temperature of a still refreshing 14.8°C (58.6°F), subtly varied from August's 14.4°C (57.9°F). Saint Heliers, in September, registers an average low temperature of 10.9°C (51.6°F), showing a minute reduction from daily highs.Humidity
August and September, with an average relative humidity of 79%, are the most humid months in Saint Heliers.Rainfall
In Saint Heliers, in September, during 17.5 rainfall days, 61mm (2.4") of precipitation is typically accumulated. In Saint Heliers, during the entire year, the rain falls for 186.5 days and collects up to 625mm (24.61") of precipitation.Daylight
In Saint Heliers, New Zealand, the average length of the day in September is 11h and 51min.On the first day of September in Saint Heliers, sunrise is at 6:40 am and sunset at 6:00 pm NZST. On the last day of the month, sunrise is at 6:57 am and sunset at 7:23 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 6.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 suggests this advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What are the temperatures in Saint Heliers in September?
What are the most humid months in Saint Heliers?
What is the average humidity in September in Saint Heliers?
How many days does it rain in September in Saint Heliers?
How many hours of daylight does Saint Heliers have in September?
When are sunrise and sunset in September in Saint Heliers?
When does Daylight Saving Time (DST) start in September in Saint Heliers?
How long on average sun shines in September in Saint Heliers?
What is the UV index intensity in September in Saint Heliers?
Average temperature in September
Saint Heliers, New Zealand
- Average high temperature in September: 14.8°C
The warmest month (with the highest average high temperature) is February (22.6°C).
The month with the lowest average high temperature is July (13.8°C).
- Average low temperature in September: 10.9°C
The month with the highest average low temperature is February (17.5°C).
The coldest month (with the lowest average low temperature) is July (10.4°C).
Average pressure in September
Saint Heliers, New Zealand
- Average pressure in September: 1014.8mbar
The month with the highest atmospheric pressure is March (1018.3mbar).
The months with the lowest atmospheric pressure are January and September (1014.8mbar).
Average wind speed in September
Saint Heliers, New Zealand
- Average wind speed in September: 19km/h
The windiest month (with the highest average wind speed) is September (19km/h).
The calmest month (with the lowest average wind speed) is February (13.9km/h).
Average humidity in September
Saint Heliers, New Zealand
- Average humidity in September: 79%
The months with the highest relative humidity are August and September (79%).
The months with the lowest relative humidity are January, February, March and November (77%).
Average rainfall in September
Saint Heliers, New Zealand
- Average rainfall in September: 61mm
The wettest month (with the highest rainfall) is June (71mm).
The driest month (with the least rainfall) is January (34mm).
Average rainfall days in September
Saint Heliers, New Zealand
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is August (18.9 days).
The month with the least rainy days is January (11.1 days).
Average daylight in September /
Average sunshine in September
Saint Heliers, New Zealand
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 36min).
The month with the shortest days is June (Average daylight: 9h and 42min).
- Average sunshine in September: 6h and 3min
The month with the most sunshine is December (Average sunshine: 8h and 18min).
The month with the least sunshine is August (Average sunshine: 6h and 24min).
Average sunshine days in September
Saint Heliers, New Zealand
- Average sunshine days in September: 7.7 days
The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is September (7.7 days).
Average UV index in September
Saint Heliers, New Zealand
- Average UV index in September: 4
The months with the highest UV index are January, February, March, April and December (UV index 5).
The month with the lowest UV index is June (UV index 3).
Average cloud cover in September
Saint Heliers, New Zealand
- Average cloud cover in September: 49
The month with the most cloud cover is September (Cloud cover 49).
The month with the least cloud cover is January (Cloud cover 37).
Average visibility in September
Saint Heliers, New Zealand
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Saint Heliers, New Zealand
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