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September Weather in Eltham, New Zealand

Last updated: August 31, 2025

In September, the average temperature in Eltham, New Zealand hovers around 11°C (52°F), with a minimum of 2°C (36°F) and a maximum reaching 18°C (64°F). This month brings about 134 mm (5.3 in) of precipitation spread across 16 days, resulting in an average humidity of 80%. Be prepared for a mix of mild temperatures and damp days!

September Temperature in Eltham

In September in Eltham, the average temperature is 11°C (52°F). Maximum temperatures can reach 18°C (64°F), while minimums can drop to as low as 2°C (36°F). It’s advisable to pack layers and prepare for varying weather conditions during your travel.

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

The chart illustrates September temperature patterns in Eltham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Eltham, September typically has an average temperature of 11°C (52°F), with highs reaching up to 18°C (64°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec646562585451505052555963
Data source: Temperature data for Eltham 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 Eltham

In Eltham in September, the total precipitation amount is 134 mm (5.3 in), distributed over 16 days.

September Precipitation Trends in Eltham

The chart displays monthly precipitation patterns in Eltham, 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 Eltham, September typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec71651061491009514413213410297137
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Eltham

In Eltham in September, humidity is 80%. With an average temperature of 11°C (52°F), this humidity feels like a damp blanket wrapping around you, making travel a bit uncomfortable as you navigate through the thick, languid air.

September Average Humidity in Eltham

This chart illustrates the average monthly humidity levels in Eltham, 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 Eltham is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%77%75%76%81%83%84%81%80%82%82%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Eltham

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

Maximum UV Index Levels in Eltham for September

The chart shows the monthly maximum UV Index (UVI) for Eltham 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 Eltham typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1413974234691113
Data source: Eltham 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 Eltham Compares to Other Months

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

This table compares monthly weather conditions in Eltham, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)71 mm (2.8 inches)79%extreme
February Weather18°C (65°F)65 mm (2.5 inches)77%extreme
March Weather17°C (62°F)106 mm (4.2 inches)75%very high
April Weather14°C (58°F)149 mm (5.9 inches)76%high
May Weather12°C (55°F)100 mm (3.9 inches)81%moderate
June Weather10°C (51°F)94 mm (3.7 inches)83%low
July Weather10°C (50°F)144 mm (5.7 inches)84%moderate
August Weather10°C (50°F)132 mm (5.2 inches)81%moderate
September Weather11°C (52°F)134 mm (5.3 inches)80%high
October Weather13°C (55°F)102 mm (4.0 inches)82%very high
November Weather15°C (59°F)97 mm (3.8 inches)82%extreme
December Weather17°C (63°F)137 mm (5.4 inches)80%extreme

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