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Weather in September
September, in Nelson, is a month that ushers in spring, welcomed by a gentle climb in the mercury levels. The city receives 85mm (3.35") of rainfall, saturating the fertile soils of this New Zealand town. Nelson, in September, transforms into an artist's palette of vivid colours, teeming with new life. The return of longer daylight hours rejuvenates the city's outdoor life. A hike or a leisurely walk becomes a popular activity, attributed to the mellow climatic conditions.
Note: Entering waters of 14°C (57.2°F) is life-endangering. A mere moment in 13°C (55.4°F) waters feels piercing cold, and below 10°C (50°F) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
On the first day of September, sunrise is at 6:51 am and sunset at 6:02 pm NZST. On the last day of the month, sunrise is at 7:02 am and sunset at 7:31 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.
Note: The UV index of 4 during September translates into the following guidance:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
[Resources]Temperature
Nelson's shift into September sets the average high-temperature at a still refreshing 15°C (59°F), a figure that deviates only slightly from August's 13.4°C (56.1°F). In Nelson, an average nighttime temperature of 5.7°C (42.3°F) is expected during September.Humidity
The average relative humidity in September in Nelson is 79.7%.Rainfall
In Nelson, in September, during 9.9 rainfall days, 85mm (3.35") of precipitation is typically accumulated. In Nelson, during the entire year, the rain falls for 93.4 days and collects up to 960mm (37.8") of precipitation.Sea temperature
July through October, with an average sea temperature of 14°C (57.2°F), are months with the coldest seawater in Nelson.Note: Entering waters of 14°C (57.2°F) is life-endangering. A mere moment in 13°C (55.4°F) waters feels piercing cold, and below 10°C (50°F) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
Daylight
The average length of the day in September in Nelson is 11h and 49min.On the first day of September, sunrise is at 6:51 am and sunset at 6:02 pm NZST. On the last day of the month, sunrise is at 7:02 am and sunset at 7:31 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
In September, the average sunshine in Nelson is 6.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 4 during September translates into the following guidance:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the average September temperature in Nelson?
In September, in Nelson, the average high-temperature is 15°C (59°F), and the average low-temperature is 5.7°C (42.3°F).
What is the average humidity in September in Nelson?
The average relative humidity in September in Nelson, New Zealand, is 79.7%.
How many days does it rain in September in Nelson?
In Nelson, New Zealand, in September, it is raining for 9.9 days, with typically 85mm (3.35") of accumulated precipitation.
What are the months with the coldest sea water in Nelson?
July through October, with an average sea temperature of 14°C (57.2°F), are months with the coldest seawater in Nelson.
What is the sea water temperature in September in Nelson?
In Nelson, New Zealand, in September, the average water temperature is 14°C (57.2°F). Swimming in 14°C (57.2°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
How many hours of daylight does Nelson have in September?
The average day length in September in Nelson, New Zealand, is 11h and 49min.
What time are sunrise and sunset in September in Nelson?
On the first day of September in Nelson, New Zealand, sunrise is at 6:51 am and sunset at 6:02 pm NZST. On the last day of the month, sunrise is at 7:02 am and sunset at 7:31 pm NZDT.
When does Daylight Saving Time (DST) start in September in Nelson?
On Sunday, 29. September 2024, at 2:00 am, Daylight Saving Time starts in Nelson, New Zealand, and the time zone changes from NZST to NZDT. DST ends on Sunday, 06. April 2025, at 3:00 am.
How many hours of sunshine does Nelson have in September?
The average sunshine duration in September in Nelson, New Zealand, is 6.3h.
What is the UV index reading in September in Nelson?
The average daily maximum UV index in September in Nelson, New Zealand, is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average temperature in September
Nelson, New Zealand
- Average high temperature in September: 15°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 (12.5°C).
- Average low temperature in September: 5.7°C
The month with the highest average low temperature is February (13.3°C).
The coldest month (with the lowest average low temperature) is July (1.9°C).
Average humidity in September
Nelson, New Zealand
- Average humidity in September: 79.7%
The month with the highest relative humidity is July (90%).
The month with the lowest relative humidity is November (73.7%).
Average rainfall in September
Nelson, New Zealand
- Average rainfall in September: 85.1mm
The wettest month (with the highest rainfall) is June (92.7mm).
The driest month (with the least rainfall) is February (63.5mm).
Average rainfall days in September
Nelson, New Zealand
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is September (9.9 days).
The month with the least rainy days is February (5.8 days).
Average sea temperature in September
Nelson, New Zealand
- Average sea temperature in September: 14°C
The best months for swimming (with the highest average sea temperature) are February and March (19°C).
The coldest months (with the lowest average sea temperature) are July, August, September and October (14°C).
Average daylight in September /
Average sunshine in September
Nelson, 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 12min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is January (Average sunshine: 8h and 36min).
The month with the least sunshine is June (Average sunshine: 4h and 48min).
Average UV index in September
Nelson, New Zealand
- Average UV index in September: 4
The month with the highest UV index is January (UV index 11).
The months with the lowest UV index are June and July (UV index 1).
Nelson, New Zealand
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