May Weather in Wellington, United States

Last updated: June 24, 2025

In Wellington, United States, the average temperature in May is a pleasant 14°C (58°F). However, temperatures can vary significantly, with minimums dipping to -4°C (25°F) and maximums soaring to 33°C (91°F). Expect about 23 mm (0.9 in) of precipitation over 5 days, accompanied by an average humidity of 54%. Make sure to prepare for these diverse weather conditions!

May Temperature in Wellington

In May in Wellington, the average temperature is 14°C (58°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as -4°C (25°F). Travelers should be prepared for a wide range of temperatures during their visit.

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 14°C (58°F), with highs reaching up to 33°C (91°F) and lows dropping to around -4°C (25°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 23 mm (0.9 in) over the course of 5 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 23 mm (0.9 inches) of precipitation spread over approximately 5 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 Wellington

In Wellington in May, humidity is 54%. With an average temperature of 14°C (58°F), this humidity feels like a refreshing embrace, making it quite pleasant for traveling as long as you stay hydrated and enjoy mild, invigorating air during your adventures.

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 54%, 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 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 11, which falls under the extreme 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	-5°C (24°F)	26 mm (1.0 inches)	87%	moderate
February Weather	-2°C (30°F)	27 mm (1.0 inches)	88%	high
March Weather	5°C (41°F)	31 mm (1.2 inches)	77%	very high
April Weather	9°C (49°F)	11 mm (0.4 inches)	69%	very high
May Weather	14°C (58°F)	23 mm (0.9 inches)	54%	extreme
June Weather	22°C (71°F)	8 mm (0.3 inches)	45%	extreme
July Weather	25°C (78°F)	9 mm (0.4 inches)	37%	extreme
August Weather	24°C (75°F)	12 mm (0.5 inches)	34%	extreme
September Weather	19°C (66°F)	12 mm (0.5 inches)	47%	very high
October Weather	9°C (48°F)	20 mm (0.8 inches)	67%	high
November Weather	3°C (39°F)	18 mm (0.7 inches)	82%	moderate
December Weather	-3°C (27°F)	24 mm (0.9 inches)	87%	moderate