September weather forecast
Auckland, New Zealand

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The city of Auckland, New Zealand, viewed across the water early morning
The city of Auckland, New Zealand, viewed across the water early morning

Weather in September

With the arrival of September, Auckland ushers in the spring season. Sea temperatures begin to climb, hitting marks close to 15°C (59°F). The wind speed peaks to 19km/h (11.8mph), giving the city an early taste of the revitalizing spring breeze. The amount of rainfall sees a significant drop, making the weather increasingly agreeable for outdoor activities. With longer daylight hours and an increase in sunshine, Auckland bursts into springtime bloom.

Temperature

As September takes its course, Auckland's average high-temperature registers at a still mild 14.8°C (58.6°F), closely aligning with the preceding month. Auckland's nights in September maintain a consistent average of 10.9°C (51.6°F), demonstrating a minimal differential from its daytime temperature.

Humidity

The months with the highest humidity are August and September, with an average relative humidity of 79%.

Rainfall

In Auckland, in September, it is raining for 17.5 days, with typically 61mm (2.4") of accumulated precipitation. In Auckland, during the entire year, the rain falls for 186.5 days and collects up to 625mm (24.61") of precipitation.

Sea temperature

In September, the average sea temperature is 15°C (59°F).
Note: A surface water temperature of 15°C (59°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).

Daylight

In Auckland, the average length of the day in September is 11h and 51min.
On the first day of September, sunrise is at 6:41 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

In September, the average sunshine is 6.5h.

UV index

In Auckland, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.

Frequently asked questions

What are September temperatures in Auckland?

The high-temperature during September is 14.8°C (58.6°F) and the low-temperature is 10.9°C (51.6°F).

What is the most humid month?

The months with the highest humidity are August and September, with an average relative humidity of 79%.

What is the average humidity in September?

The average relative humidity in September is 79%.

How many days does it rain in September?

In Auckland, during September, the rain falls for 17.5 days and regularly aggregates up to 61mm (2.4") of precipitation.

What is the sea water temperature in September?

In September, the average sea temperature is 15°C (59°F). For most, swimming in 15°C (59°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

How many hours of daylight does Auckland have in September?

In Auckland, the average day length in September is 11h and 51min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:41 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.

When does Daylight Saving Time (DST) start in September?

On Sunday, 29. September 2024, at 2:00 am, Daylight Saving Time starts, 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 Auckland have in September?

In September, the average sunshine duration in Auckland is 6.5h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.

Average temperature in September
Auckland, New Zealand

Average temperature in September - Auckland, 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
Auckland, New Zealand

Average pressure in September - Auckland, 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
Auckland, New Zealand

Average wind speed in September - Auckland, 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
Auckland, New Zealand

Average humidity in September - Auckland, 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
Auckland, New Zealand

Average rainfall in September - Auckland, 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
Auckland, New Zealand

Average rainfall days in September - Auckland, 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 sea temperature in September
Auckland, New Zealand

Average sea temperature in September - Auckland, New Zealand
  • Average sea temperature in September: 15°C

The best month for swimming (with the highest average sea temperature) is February (21.3°C).
The coldest month (with the lowest average sea temperature) is August (14.7°C).

Average daylight in September /
Average sunshine in September
Auckland, New Zealand

Average daylight in September / Average sunshine in September - Auckland, 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
Auckland, New Zealand

Average sunshine days in September - Auckland, 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
Auckland, New Zealand

Average UV index in September - Auckland, 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
Auckland, New Zealand

Average cloud cover in September - Auckland, 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
Auckland, New Zealand

Average visibility in September - Auckland, 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).

Auckland, New Zealand

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