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May Weather in Wairau Valley, New Zealand

Last updated: August 31, 2025

In May, the average temperature in Wairau Valley, New Zealand hovers around 8°C (46°F). Be prepared for chilly days, as temperatures can dip to a minimum of -5°C (24°F), while occasionally reaching a mild maximum of 18°C (65°F). Expect 139 mm (5.5 in) of precipitation over about 10 days, contributing to an overall average humidity of 84%.

May Temperature in Wairau Valley

In May in Wairau Valley, the average temperature is 8°C (46°F), with maximums reaching 18°C (65°F) and minimums dipping as low as -5°C (24°F). This weather makes it a great time for travelers to enjoy outdoor activities while preparing for cool evenings.

May Weather in Wairau Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Wairau Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wairau Valley, May typically has an average temperature of 8°C (46°F), with highs reaching up to 18°C (65°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec615956514642404345505458
Data source: Temperature data for Wairau Valley 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 Wairau Valley

In Wairau Valley, in May, the total precipitation amount is 139 mm (5.5 in) accumulated over 10 days.

May Precipitation Trends in Wairau Valley

The chart displays monthly precipitation patterns in Wairau Valley, 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 Wairau Valley, May typically receives around 139 mm (5.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec829511213813975176127136127132183
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Wairau Valley

In Wairau Valley in May humidity is 84%. With an average temperature of 8°C (46°F), this humidity feels like a chilly mist wrapping around you, making outdoor exploration cumbersome and layering your clothing a necessity for comfort.

May Average Humidity in Wairau Valley

This chart illustrates the average monthly humidity levels in Wairau Valley, 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 Wairau Valley is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%79%80%84%86%86%83%83%82%82%81%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Wairau Valley

In Wairau Valley 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 Wairau Valley for better planning.

Maximum UV Index Levels in Wairau Valley for May

The chart shows the monthly maximum UV Index (UVI) for Wairau Valley 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 Wairau Valley typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1313974224691113
Data source: Wairau Valley 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 Wairau Valley Compares to Other Months

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

This table compares monthly weather conditions in Wairau Valley, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)82 mm (3.2 inches)79%extreme
February Weather15°C (60°F)95 mm (3.7 inches)79%extreme
March Weather13°C (57°F)112 mm (4.4 inches)79%very high
April Weather10°C (51°F)138 mm (5.4 inches)80%high
May Weather8°C (46°F)139 mm (5.5 inches)84%moderate
June Weather5°C (42°F)75 mm (3.0 inches)86%low
July Weather5°C (41°F)176 mm (6.9 inches)86%low
August Weather6°C (43°F)127 mm (5.0 inches)83%moderate
September Weather7°C (45°F)136 mm (5.3 inches)83%high
October Weather10°C (50°F)127 mm (5.0 inches)82%very high
November Weather12°C (54°F)132 mm (5.2 inches)82%extreme
December Weather14°C (58°F)183 mm (7.2 inches)81%extreme

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