May Weather in Wellington, United States

Last updated: June 24, 2025

In May, the average temperature in Wellington, United States hovers around 20°C (68°F). Expect a minimum of 4°C (40°F) and a maximum of 35°C (96°F), offering a wide range of comfort. Be prepared for 170 mm (6.7 in) of rainfall over 14 days, contributing to the average humidity of 83% that makes this destination feel lush and vibrant.

May Temperature in Wellington

In May in Wellington, the average temperature is 20°C (68°F). Maximum can reach 35°C (96°F) and minimum can be as low as 4°C (40°F). This diverse temperature range makes Wellington an ideal destination for travelers seeking both warm and cool experiences.

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 20°C (68°F), with highs reaching up to 35°C (96°F) and lows dropping to around 4°C (40°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 total precipitation amount is 170 mm (6.7 in) accumulated over the course of 14 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 170 mm (6.7 inches) of precipitation spread over approximately 14 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 83%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket enveloping you, making it feel much warmer than it is. Traveling in such conditions can be quite taxing, as the air feels thick, often leading to a sense of exhaustion and requiring frequent breaks to seek shade or hydration.

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 83%, 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	2°C (35°F)	43 mm (1.7 inches)	77%	moderate
February Weather	2°C (36°F)	32 mm (1.3 inches)	76%	high
March Weather	10°C (50°F)	84 mm (3.3 inches)	71%	high
April Weather	14°C (57°F)	91 mm (3.6 inches)	73%	very high
May Weather	20°C (68°F)	170 mm (6.7 inches)	83%	very high
June Weather	26°C (79°F)	108 mm (4.3 inches)	83%	extreme
July Weather	27°C (82°F)	58 mm (2.3 inches)	81%	extreme
August Weather	26°C (79°F)	96 mm (3.8 inches)	73%	very high
September Weather	23°C (75°F)	77 mm (3.1 inches)	67%	very high
October Weather	15°C (59°F)	136 mm (5.4 inches)	72%	high
November Weather	8°C (47°F)	25 mm (1.0 inches)	82%	moderate
December Weather	5°C (40°F)	30 mm (1.2 inches)	85%	moderate