August Weather in Rolleston, New Zealand

Last updated: August 31, 2025

In August, the average temperature in Rolleston, New Zealand hovers around 8°C (47°F). Expect a chilly minimum of -2°C (28°F), while the mercury can rise to a pleasant 21°C (71°F) at times. With a precipitation amount of 50 mm (2.0 in) spread over 9 days, you'll want to prepare for some wet weather. Don't forget to account for the average humidity of 85%, which can make the air feel quite damp!

August Temperature in Rolleston

In August in Rolleston, the average temperature is 8°C (47°F). The maximum can reach 21°C (71°F), while the minimum can be as low as -2°C (28°F). Be prepared for a mix of mild and chilly weather, making it essential to pack layers for your travels.

August Weather in Rolleston: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Rolleston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rolleston, August typically has an average temperature of 8°C (47°F), with highs reaching up to 21°C (71°F) and lows dropping to around -2°C (28°F).

Data source: Temperature data for Rolleston generated using information from the Copernicus Climate Change Service.

August Precipitation in Rolleston

In Rolleston in August, the precipitation amount is 50 mm (2.0 in) over the course of 9 days.

August Precipitation Trends in Rolleston

The chart displays monthly precipitation patterns in Rolleston, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Rolleston, August typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Rolleston

In Rolleston in August humidity is 85%. With an average temperature of 8°C (47°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities feel less refreshing and more uncomfortable for traveling.

August Average Humidity in Rolleston

This chart illustrates the average monthly humidity levels in Rolleston, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Rolleston is approximately 85%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Rolleston

In Rolleston in August, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Rolleston, you can check the information here.

Maximum UV Index Levels in Rolleston for August

The chart shows the monthly maximum UV Index (UVI) for Rolleston in August, 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 August, the maximum UV index in Rolleston typically reaches 3, which falls under the moderate exposure category.

Data source: Rolleston August 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 August Weather in Rolleston Compares to Other Months

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

This table compares monthly weather conditions in Rolleston, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (64°F)	48 mm (1.9 inches)	81%	extreme
February Weather	18°C (64°F)	40 mm (1.6 inches)	79%	extreme
March Weather	16°C (60°F)	53 mm (2.1 inches)	81%	very high
April Weather	13°C (55°F)	69 mm (2.7 inches)	84%	high
May Weather	10°C (50°F)	56 mm (2.2 inches)	87%	moderate
June Weather	7°C (46°F)	61 mm (2.4 inches)	87%	low
July Weather	7°C (45°F)	72 mm (2.8 inches)	87%	low
August Weather	8°C (47°F)	50 mm (2.0 inches)	85%	moderate
September Weather	10°C (50°F)	53 mm (2.1 inches)	85%	moderate
October Weather	12°C (54°F)	63 mm (2.5 inches)	84%	very high
November Weather	15°C (58°F)	75 mm (2.9 inches)	82%	very high
December Weather	16°C (62°F)	77 mm (3.0 inches)	84%	extreme