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May Weather in Riverhead, New Zealand

Last updated: August 31, 2025

In Riverhead, New Zealand, the average temperature in May hovers around 15°C (60°F), with minimums dipping to 9°C (48°F) and maximums reaching 20°C (68°F). Be prepared for some rain, as precipitation measures about 95 mm (3.7 in) over approximately 12 days during the month. With an average humidity of 80%, expect a lush and refreshing atmosphere throughout your stay!

May Temperature in Riverhead

In May in Riverhead, the average temperature is 15°C (60°F). Maximums can reach 20°C (68°F) and minimums can be as low as 9°C (48°F). This mild climate makes Riverhead an ideal destination for travelers looking to enjoy comfortable outdoor activities.

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

The chart illustrates May temperature patterns in Riverhead, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riverhead, May typically has an average temperature of 15°C (60°F), with highs reaching up to 20°C (68°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec686967646057555556596266
Data source: Temperature data for Riverhead generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Riverhead

In Riverhead in May, the precipitation amount is 95 mm (3.7 in) over the course of 12 days.

May Precipitation Trends in Riverhead

The chart displays monthly precipitation patterns in Riverhead, 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 Riverhead, May typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec55758510495111120130116858071
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Riverhead

In Riverhead in May humidity is 80%. With an average temperature of 15°C (60°F), this humidity feels like a warm, sticky embrace that can make even the simplest stroll feel like a workout, leaving travelers yearning for a refreshing breeze or shade to escape the weight of the air.

May Average Humidity in Riverhead

This chart illustrates the average monthly humidity levels in Riverhead, 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 Riverhead is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%76%74%75%80%82%83%81%80%80%80%78%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Riverhead

In Riverhead 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 Riverhead for better planning.

Maximum UV Index Levels in Riverhead for May

The chart shows the monthly maximum UV Index (UVI) for Riverhead 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 Riverhead typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141410743357101113
Data source: Riverhead 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 Riverhead Compares to Other Months

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

This table compares monthly weather conditions in Riverhead, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)55 mm (2.2 inches)79%extreme
February Weather21°C (69°F)75 mm (2.9 inches)76%extreme
March Weather20°C (67°F)85 mm (3.3 inches)74%very high
April Weather18°C (64°F)104 mm (4.1 inches)74%high
May Weather15°C (60°F)95 mm (3.7 inches)80%moderate
June Weather14°C (57°F)111 mm (4.4 inches)82%moderate
July Weather13°C (55°F)120 mm (4.7 inches)83%moderate
August Weather13°C (55°F)130 mm (5.1 inches)80%moderate
September Weather13°C (56°F)116 mm (4.6 inches)80%high
October Weather15°C (59°F)85 mm (3.4 inches)80%very high
November Weather17°C (62°F)80 mm (3.2 inches)80%extreme
December Weather19°C (66°F)71 mm (2.8 inches)78%extreme

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