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September Weather in Palmerston, New Zealand

Last updated: August 31, 2025

In Palmerston, New Zealand, the average temperature in September hovers around 9°C (48°F), with a minimum dipping to 1°C (33°F) and a maximum peaking at 19°C (67°F). You can expect about 48 mm (1.9 in) of precipitation spread over 11 days, while the air retains an average humidity of 83%. Get ready for a month of cool, damp weather!

September Temperature in Palmerston

In September in Palmerston, the average temperature is 9°C (48°F). The maximum can reach 19°C (67°F), while the minimum can be as low as 1°C (33°F). Be prepared for cool weather, and pack layers to stay comfortable while exploring.

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

The chart illustrates September temperature patterns in Palmerston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Palmerston, September typically has an average temperature of 9°C (48°F), with highs reaching up to 19°C (67°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec595957534844434548505457
Data source: Temperature data for Palmerston 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 Palmerston

In Palmerston in September, the precipitation amount is 48 mm (1.9 in) over a span of 11 days.

September Precipitation Trends in Palmerston

The chart displays monthly precipitation patterns in Palmerston, 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 Palmerston, September typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec889750764037653848779097
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Palmerston

In Palmerston in September humidity is 83%. With an average temperature of 9°C (48°F), this humidity feels like an enveloping blanket, making outdoor activities quite uncomfortable and encouraging travelers to seek shelter or shade frequently.

September Average Humidity in Palmerston

This chart illustrates the average monthly humidity levels in Palmerston, 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 Palmerston is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%76%78%81%84%85%85%84%83%80%78%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Palmerston

In Palmerston 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 Palmerston.

Maximum UV Index Levels in Palmerston for September

The chart shows the monthly maximum UV Index (UVI) for Palmerston 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 Palmerston typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1311853223581012
Data source: Palmerston 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 Palmerston Compares to Other Months

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

This table compares monthly weather conditions in Palmerston, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)88 mm (3.5 inches)79%extreme
February Weather15°C (59°F)97 mm (3.8 inches)76%extreme
March Weather14°C (57°F)50 mm (2.0 inches)78%very high
April Weather11°C (53°F)76 mm (3.0 inches)81%moderate
May Weather9°C (49°F)40 mm (1.6 inches)84%moderate
June Weather7°C (44°F)37 mm (1.5 inches)85%low
July Weather6°C (43°F)65 mm (2.6 inches)85%low
August Weather7°C (46°F)38 mm (1.5 inches)84%moderate
September Weather9°C (48°F)48 mm (1.9 inches)83%moderate
October Weather10°C (51°F)77 mm (3.0 inches)80%very high
November Weather12°C (55°F)90 mm (3.5 inches)78%very high
December Weather14°C (58°F)97 mm (3.8 inches)81%extreme

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