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September Weather in Richmond, New Zealand

Last updated: August 31, 2025

In September, the average temperature in Richmond, New Zealand hovers around 10°C (50°F), with a minimum as low as 3°C (37°F) and a maximum reaching up to 16°C (62°F). Be prepared for some wet days, as the area sees an average precipitation of 116 mm (4.6 in) over approximately 11 days. With an average humidity of 83%, it’s a month that’s both refreshing and a tad damp!

September Temperature in Richmond

In September in Richmond, the average temperature is 10°C (50°F), with maximums reaching 16°C (62°F) and minimums dipping as low as 3°C (37°F). This mild climate makes it an ideal time to explore the outdoors and enjoy the local attractions.

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

The chart illustrates September temperature patterns in Richmond, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Richmond, September typically has an average temperature of 10°C (50°F), with highs reaching up to 16°C (62°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec646361565349474850535761
Data source: Temperature data for Richmond 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 Richmond

In Richmond in September, the precipitation amount is 116 mm (4.6 in) over the course of 11 days.

September Precipitation Trends in Richmond

The chart displays monthly precipitation patterns in Richmond, 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 Richmond, September typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec728612414314876165130116120118145
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Richmond

In Richmond in September, humidity is 83%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration less comfortable and prompting visitors to seek cozy indoor activities.

September Average Humidity in Richmond

This chart illustrates the average monthly humidity levels in Richmond, 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 Richmond is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%79%80%84%86%86%83%83%82%82%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Richmond

In Richmond 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 Richmond, you can refer to this Hourly UV Index in Richmond.

Maximum UV Index Levels in Richmond for September

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

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

This table compares monthly weather conditions in Richmond, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)72 mm (2.8 inches)79%extreme
February Weather17°C (63°F)86 mm (3.4 inches)79%extreme
March Weather16°C (61°F)124 mm (4.9 inches)79%very high
April Weather14°C (57°F)143 mm (5.6 inches)80%high
May Weather11°C (53°F)148 mm (5.8 inches)84%moderate
June Weather9°C (49°F)76 mm (3.0 inches)86%low
July Weather8°C (47°F)165 mm (6.5 inches)86%low
August Weather9°C (48°F)130 mm (5.1 inches)83%moderate
September Weather10°C (50°F)116 mm (4.6 inches)83%high
October Weather12°C (54°F)120 mm (4.7 inches)82%very high
November Weather14°C (57°F)118 mm (4.7 inches)82%extreme
December Weather16°C (61°F)145 mm (5.7 inches)81%extreme

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