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September Weather in Invercargill, New Zealand

Last updated: August 31, 2025

In September, the average temperature in Invercargill, New Zealand is a cool 9°C (49°F), with temperatures ranging from a minimum of 1°C (34°F) to a pleasant maximum of 20°C (68°F). Expect 127 mm (5.0 in) of precipitation spread over approximately 16 days, contributing to an average humidity of 83%.

September Temperature in Invercargill

In September in Invercargill, the average temperature is 9°C (49°F). Maximums can reach 20°C (68°F) and minimums can be as low as 1°C (34°F). This makes it a great time for travelers to enjoy the cool weather while exploring the beautiful sights of Invercargill.

September Weather in Invercargill: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Invercargill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Invercargill, September typically has an average temperature of 9°C (49°F), with highs reaching up to 20°C (68°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec595957545046454749525558
Data source: Temperature data for Invercargill generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Invercargill

In Invercargill in September, the precipitation amount is 127 mm (5.0 in), distributed over 16 days.

September Precipitation Trends in Invercargill

The chart displays monthly precipitation patterns in Invercargill, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Invercargill, September typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec10112285109103859497127117121106
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Invercargill

In Invercargill in September, humidity is 83%. With an average temperature of 9°C (49°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities uncomfortable for traveling and requiring extra layers to stay warm and dry.

September Average Humidity in Invercargill

This chart illustrates the average monthly humidity levels in Invercargill, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Invercargill is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%84%84%85%85%85%84%83%82%83%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Invercargill

In Invercargill in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Invercargill.

Maximum UV Index Levels in Invercargill for September

The chart shows the monthly maximum UV Index (UVI) for Invercargill in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Invercargill typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121185322358912
Data source: Invercargill September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Invercargill Compares to Other Months

Weather in Invercargill varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Invercargill, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Invercargill, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)101 mm (4.0 inches)83%extreme
February Weather15°C (59°F)122 mm (4.8 inches)82%extreme
March Weather14°C (58°F)85 mm (3.4 inches)84%very high
April Weather12°C (54°F)109 mm (4.3 inches)84%moderate
May Weather10°C (50°F)103 mm (4.0 inches)85%moderate
June Weather8°C (46°F)85 mm (3.3 inches)85%low
July Weather7°C (46°F)94 mm (3.7 inches)85%low
August Weather8°C (47°F)97 mm (3.8 inches)84%moderate
September Weather9°C (49°F)127 mm (5.0 inches)83%moderate
October Weather11°C (52°F)117 mm (4.6 inches)82%very high
November Weather13°C (55°F)121 mm (4.8 inches)82%very high
December Weather14°C (58°F)106 mm (4.2 inches)83%extreme

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