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September Weather in Masterton, New Zealand

Last updated: August 31, 2025

In September, the average temperature in Masterton, New Zealand hovers around 10°C (50°F), with minimums dipping to 1°C (33°F) and maximums reaching 17°C (64°F). Expect precipitation of about 102 mm (4.0 in) spread over 13 days, contributing to an average humidity of 80%.

September Temperature in Masterton

In September in Masterton, the average temperature is 10°C (50°F). The maximum can reach 17°C (64°F), while the minimum can drop as low as 1°C (33°F). Overall, this time of year offers a cool yet pleasant climate suitable for travelers seeking to explore and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in Masterton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Masterton, September typically has an average temperature of 10°C (50°F), with highs reaching up to 17°C (64°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec626260555249474850535660
Data source: Temperature data for Masterton 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 Masterton

In Masterton in September, precipitation amounts to 102 mm (4.0 in) over the course of 13 days.

September Precipitation Trends in Masterton

The chart displays monthly precipitation patterns in Masterton, 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 Masterton, September typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec53618410460102888010286103132
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Masterton

In Masterton in September, humidity is 80%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill enveloping you, making traveling somewhat uncomfortable as it seeps into your clothes and clings to your skin, leaving you longing for a cozy indoor refuge.

September Average Humidity in Masterton

This chart illustrates the average monthly humidity levels in Masterton, 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 Masterton is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%76%77%82%83%84%81%80%79%78%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Masterton

In Masterton in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Masterton, you can refer to this Hourly UV Index in Masterton.

Maximum UV Index Levels in Masterton for September

The chart shows the monthly maximum UV Index (UVI) for Masterton 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 Masterton typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1313974224691113
Data source: Masterton 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 Masterton Compares to Other Months

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

This table compares monthly weather conditions in Masterton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)53 mm (2.1 inches)75%extreme
February Weather17°C (63°F)61 mm (2.4 inches)76%extreme
March Weather15°C (60°F)84 mm (3.3 inches)75%very high
April Weather13°C (56°F)104 mm (4.1 inches)77%high
May Weather11°C (52°F)60 mm (2.3 inches)82%moderate
June Weather9°C (49°F)102 mm (4.0 inches)83%low
July Weather8°C (47°F)88 mm (3.5 inches)83%low
August Weather9°C (48°F)80 mm (3.1 inches)81%moderate
September Weather10°C (50°F)102 mm (4.0 inches)80%high
October Weather11°C (53°F)86 mm (3.4 inches)79%very high
November Weather14°C (57°F)103 mm (4.0 inches)78%extreme
December Weather16°C (60°F)132 mm (5.2 inches)75%extreme

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