January Weather in Riwaka, New Zealand

Last updated: August 31, 2025

In January, the average temperature in Riwaka, New Zealand is a pleasant 18°C (64°F). Expect a minimum of 10°C (51°F) and a maximum of 26°C (79°F), making it an ideal time for outdoor activities. However, be prepared for some rain, as 85 mm (3.4 in) of precipitation can be expected over 8 days. With an average humidity of 79%, the air will feel comfortably warm, adding to the charm of the season.

January Temperature in Riwaka

In January in Riwaka, the average temperature is 18°C (64°F), with maximums reaching up to 26°C (79°F) and minimums dropping as low as 10°C (51°F). This pleasant climate makes Riwaka an ideal destination for travelers looking to enjoy mild weather and outdoor activities.

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

The chart illustrates January temperature patterns in Riwaka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riwaka, January typically has an average temperature of 18°C (64°F), with highs reaching up to 26°C (79°F) and lows dropping to around 10°C (51°F).

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

January Precipitation in Riwaka

In Riwaka in January, the precipitation amount is 85 mm (3.4 in) over the course of 8 days.

January Precipitation Trends in Riwaka

The chart displays monthly precipitation patterns in Riwaka, 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 Riwaka, January typically receives around 85 mm (3.4 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Riwaka

In Riwaka in January, humidity is 79%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities more challenging but also creates a lush, vibrant atmosphere that's perfect for exploring local culture and scenery.

January Average Humidity in Riwaka

This chart illustrates the average monthly humidity levels in Riwaka, 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 Riwaka is approximately 79%, 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 Riwaka

In Riwaka 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 Riwaka.

Maximum UV Index Levels in Riwaka for January

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

Data source: Riwaka 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 Riwaka Compares to Other Months

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

This table compares monthly weather conditions in Riwaka, 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)	85 mm (3.4 inches)	79%	extreme
February Weather	17°C (63°F)	94 mm (3.7 inches)	79%	extreme
March Weather	16°C (61°F)	128 mm (5.0 inches)	79%	very high
April Weather	14°C (57°F)	154 mm (6.1 inches)	80%	high
May Weather	12°C (54°F)	168 mm (6.6 inches)	84%	moderate
June Weather	10°C (50°F)	86 mm (3.4 inches)	86%	low
July Weather	9°C (48°F)	184 mm (7.3 inches)	86%	low
August Weather	9°C (49°F)	156 mm (6.2 inches)	83%	moderate
September Weather	10°C (51°F)	125 mm (4.9 inches)	83%	high
October Weather	12°C (54°F)	137 mm (5.4 inches)	82%	very high
November Weather	14°C (58°F)	132 mm (5.2 inches)	82%	extreme
December Weather	16°C (62°F)	151 mm (5.9 inches)	81%	extreme