January Weather in Rolleston, New Zealand

Last updated: August 31, 2025

In Rolleston, New Zealand, the average temperature in January hovers around 18°C (64°F), making it a pleasant time to visit. Expect a refreshing range, with minimums dipping to 6°C (43°F) and maximums soaring to 34°C (93°F). During your stay, prepare for 48 mm (1.9 in) of precipitation spread across approximately 6 days, while the average humidity sits at a comfortable 81%.

January Temperature in Rolleston

In January in Rolleston, the average temperature is 18°C (64°F). Maximum temperatures can reach up to 34°C (93°F), while minimum temperatures can drop as low as 6°C (43°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities, from warm afternoons to cool evenings.

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

The chart illustrates January 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, January typically has an average temperature of 18°C (64°F), with highs reaching up to 34°C (93°F) and lows dropping to around 6°C (43°F).

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

January Precipitation in Rolleston

In Rolleston in January, the precipitation amount is 48 mm (1.9 in) distributed over 6 days.

January Precipitation Trends in Rolleston

The chart displays monthly precipitation patterns in Rolleston, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Rolleston, January typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 6 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Rolleston

In Rolleston in January, humidity is 81%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making travel both refreshing and slightly stifling at the same time.

January Average Humidity in Rolleston

This chart illustrates the average monthly humidity levels in Rolleston, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Rolleston is approximately 81%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Rolleston

In Rolleston in January, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Rolleston.

Maximum UV Index Levels in Rolleston for January

The chart shows the monthly maximum UV Index (UVI) for Rolleston in January, 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 January, the maximum UV index in Rolleston typically reaches 13, which falls under the extreme exposure category.

Data source: Rolleston January 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 January 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 January’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 January’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