May Weather in Riwaka, New Zealand

Last updated: August 31, 2025

In May, the average temperature in Riwaka, New Zealand reaches a mild 12°C (54°F), with a minimum of 4°C (40°F) and a comfortable maximum of 18°C (65°F). Expect 168 mm (6.6 in) of precipitation spread over 12 days, contributing to an average humidity of 84%. Prepare for a mix of cooler days and refreshing rain!

May Temperature in Riwaka

In May in Riwaka, the average temperature is 12°C (54°F), with maximums reaching 18°C (65°F) and minimums dropping to as low as 4°C (40°F). It's a great time to visit if you enjoy mild weather and want to explore without the heat of summer.

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

The chart illustrates May 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, May typically has an average temperature of 12°C (54°F), with highs reaching up to 18°C (65°F) and lows dropping to around 4°C (40°F).

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

May Precipitation in Riwaka

In Riwaka in May, the precipitation amount is 168 mm (6.6 in) over the course of 12 days.

May Precipitation Trends in Riwaka

The chart displays monthly precipitation patterns in Riwaka, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Riwaka, May typically receives around 168 mm (6.6 inches) of precipitation spread over approximately 12 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Riwaka

In Riwaka in May, humidity is 84%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket enveloping you, making travel uncomfortable and sticky.

May Average Humidity in Riwaka

This chart illustrates the average monthly humidity levels in Riwaka, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Riwaka is approximately 84%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Riwaka

In Riwaka in May, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Riwaka for better planning.

Maximum UV Index Levels in Riwaka for May

The chart shows the monthly maximum UV Index (UVI) for Riwaka in May, 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 May, the maximum UV index in Riwaka typically reaches 4, which falls under the moderate exposure category.

Data source: Riwaka May 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 May 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 May’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 May’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