December Weather in Riwaka, New Zealand

Last updated: August 31, 2025

In December, the average temperature in Riwaka, New Zealand hovers around 16°C (62°F), providing a pleasant climate. Expect a minimum of 9°C (48°F) and a maximum of 24°C (76°F), making it ideal for various outdoor activities. However, be prepared for some rain, as 151 mm (5.9 in) of precipitation is expected over 14 days, contributing to an average humidity level of 81%. Stay comfortable and enjoy the unique atmosphere of this beautiful location!

December Temperature in Riwaka

In December in Riwaka, the average temperature is 16°C (62°F). Maximums can reach 24°C (76°F) and minimums can be as low as 9°C (48°F). This pleasant climate makes it an ideal time for travelers to explore the outdoors and enjoy the local attractions.

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

The chart illustrates December 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, December typically has an average temperature of 16°C (62°F), with highs reaching up to 24°C (76°F) and lows dropping to around 9°C (48°F).

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

December Precipitation in Riwaka

In Riwaka in December, the total precipitation amount is 151 mm (5.9 in) spread over 14 days.

December Precipitation Trends in Riwaka

The chart displays monthly precipitation patterns in Riwaka, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Riwaka, December typically receives around 151 mm (5.9 inches) of precipitation spread over approximately 14 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Riwaka

In Riwaka in December, humidity is 81%. With an average temperature of 16°C (62°F), this humidity feels like a warm embrace that can quickly leave travelers feeling sticky and drained, making outdoor adventures a bit challenging unless they stay properly hydrated and take breaks in the shade.

December Average Humidity in Riwaka

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

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

December UV Index in Riwaka

In Riwaka in December, 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 December

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

Data source: Riwaka December 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 December 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 December’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 December’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