September weather forecast and climate
Wellington, New Zealand

A red cable bus on the road in Wellington, New Zealand, with the view of the sea, mountains and the city in the distance
A red cable bus on the road in Wellington, New Zealand, with the view of the sea, mountains and the city in the distance

What is the temperature in September in Wellington?

In September, in Wellington, the average high-temperature is 13.4°C (56.1°F), and the average low-temperature is 7.5°C (45.5°F).

How many days does it rain in September in Wellington?

In Wellington, New Zealand, in September, during 11 rainfall days, typically, 99.6mm (3.9") of precipitation is accumulated.

What is the sea water temperature in September in Wellington?

The average seawater temperature, in September, in Wellington, New Zealand, is 12.7°C (54.9°F). Swimming in 12.7°C (54.9°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
Average temperature in September - Wellington, New Zealand
  • Average high temperature in September: 13.4°C

The warmest month (with the highest average high temperature) is February (20.3°C).
The month with the lowest average high temperature is July (11.1°C).

  • Average low temperature in September: 7.5°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 (5.9°C).

Average humidity in September - Wellington, New Zealand
  • Average humidity in September: 80.6%

The month with the highest relative humidity is July (86.1%).
The month with the lowest relative humidity is November (78.9%).

Average rainfall in September - Wellington, New Zealand
  • Average rainfall in September: 99.6mm

The wettest month (with the highest rainfall) is July (136.4mm).
The driest month (with the lowest rainfall) is February (76.9mm).

Average rainfall days in September - Wellington, New Zealand
  • Average rainfall days in September: 11 days

Months with the highest number of rainy days are June and July (13.3 days).
The month with the lowest number of rainy days is February (7 days).

Average sea temperature in September - Wellington, New Zealand
  • Average sea temperature in September: 12.7°C

The best month for swimming (with the highest average sea temperature) is February (17.1°C).
The coldest month (with the lowest average sea temperature) is August (12.3°C).

Average daylight in September / Average sunshine in September - Wellington, New Zealand
  • Average daylight in September: 11.8h

The month with the longest days is December (Average daylight: 15.1h).
The month with shortest days is June (Average daylight: 9.2h).

  • Average sunshine in September: 5.4h

The month with most sunshine is January (Average sunshine: 7.8h).
The month with least sunshine is June (Average sunshine: 3.4h).

Average UV index in September - Wellington, New Zealand
  • Average UV index in September: 4

The month with the highest UV index is January (UV index 11).
Months with the lowest UV index are June and July (UV index 1).

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