May Weather in Wellington, United States

Last updated: June 24, 2025

In May, the average temperature in Wellington, United States is a comfortable 16°C (61°F). However, temperatures can vary significantly, dipping as low as -1°C (31°F) and soaring to a maximum of 30°C (87°F). Expect 126 mm (5.0 in) of precipitation spread over 15 days, with an average humidity of 81%.

May Temperature in Wellington

In May in Wellington, the average temperature is 16°C (61°F). Maximums can reach 30°C (87°F), and minimums can be as low as -1°C (31°F). Be prepared for a diverse range of temperatures and pack accordingly for your travels!

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

The chart illustrates May temperature patterns in Wellington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wellington, May typically has an average temperature of 16°C (61°F), with highs reaching up to 30°C (87°F) and lows dropping to around -1°C (31°F).

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

May Precipitation in Wellington

In Wellington in May, the precipitation amount is 126 mm (5.0 in) spread over 15 days.

May Precipitation Trends in Wellington

The chart displays monthly precipitation patterns in Wellington, 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 Wellington, May typically receives around 126 mm (5.0 inches) of precipitation spread over approximately 15 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Wellington

In Wellington in May, humidity is 81%. With an average temperature of 16°C (61°F), this humidity feels like a warm, heavy blanket wrapping around you as you explore the sights, making it essential to stay hydrated and take regular breaks in the shade.

May Average Humidity in Wellington

This chart illustrates the average monthly humidity levels in Wellington, 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 Wellington is approximately 81%, 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 Wellington

In Wellington in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Wellington.

Maximum UV Index Levels in Wellington for May

The chart shows the monthly maximum UV Index (UVI) for Wellington 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 Wellington typically reaches 10, which falls under the very high exposure category.

Data source: Wellington 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 Wellington Compares to Other Months

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

This table compares monthly weather conditions in Wellington, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	86 mm (3.4 inches)	88%	moderate
February Weather	0°C (32°F)	97 mm (3.8 inches)	88%	moderate
March Weather	4°C (39°F)	99 mm (3.9 inches)	87%	high
April Weather	9°C (49°F)	124 mm (4.9 inches)	87%	very high
May Weather	16°C (61°F)	126 mm (5.0 inches)	81%	very high
June Weather	21°C (70°F)	129 mm (5.1 inches)	83%	very high
July Weather	24°C (75°F)	124 mm (4.9 inches)	82%	very high
August Weather	23°C (73°F)	91 mm (3.6 inches)	76%	very high
September Weather	20°C (68°F)	86 mm (3.4 inches)	77%	very high
October Weather	14°C (57°F)	107 mm (4.2 inches)	82%	high
November Weather	5°C (42°F)	100 mm (3.9 inches)	89%	moderate
December Weather	2°C (35°F)	92 mm (3.6 inches)	86%	low