May Weather in Koumac, New Caledonia

Last updated: August 31, 2025

In May, the average temperature in Koumac, New Caledonia hovers around 24°C (75°F), offering a pleasant climate. Expect minimums of 18°C (65°F) and highs reaching up to 29°C (85°F). Visitors should prepare for 49 mm (1.9 in) of rain spread across approximately 8 days, resulting in an average humidity of 79%.

May Temperature in Koumac

In May, in Koumac, the average temperature is 24°C (75°F), with maximums reaching 29°C (85°F) and minimums dropping as low as 18°C (65°F). This pleasant weather makes it an ideal time for travelers to explore and enjoy all that Koumac has to offer.

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

The chart illustrates May temperature patterns in Koumac, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koumac, May typically has an average temperature of 24°C (75°F), with highs reaching up to 29°C (85°F) and lows dropping to around 18°C (65°F).

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

May Precipitation in Koumac

In Koumac in May, the precipitation amount is 49 mm (1.9 in) spread over 8 days.

May Precipitation Trends in Koumac

The chart displays monthly precipitation patterns in Koumac, 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 Koumac, May typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 8 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 Koumac

In Koumac in May, humidity is 79%. With an average temperature of 24°C (75°F), this humidity feels like a warm, tropical embrace, making traveling quite sticky and requiring ample hydration and light clothing to keep comfortable while exploring.

May Average Humidity in Koumac

This chart illustrates the average monthly humidity levels in Koumac, 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 Koumac is approximately 79%, 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 Koumac

In Koumac in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Koumac.

Maximum UV Index Levels in Koumac for May

The chart shows the monthly maximum UV Index (UVI) for Koumac 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 Koumac typically reaches 9, which falls under the very high exposure category.

Data source: Koumac 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 Koumac Compares to Other Months

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

This table compares monthly weather conditions in Koumac, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (80°F)	174 mm (6.9 inches)	81%	extreme
February Weather	27°C (80°F)	183 mm (7.2 inches)	81%	extreme
March Weather	26°C (80°F)	121 mm (4.7 inches)	81%	extreme
April Weather	25°C (78°F)	104 mm (4.1 inches)	82%	extreme
May Weather	24°C (75°F)	49 mm (1.9 inches)	79%	very high
June Weather	22°C (72°F)	30 mm (1.2 inches)	74%	high
July Weather	21°C (71°F)	54 mm (2.1 inches)	71%	very high
August Weather	21°C (71°F)	53 mm (2.1 inches)	74%	very high
September Weather	22°C (72°F)	16 mm (0.6 inches)	73%	extreme
October Weather	24°C (75°F)	61 mm (2.4 inches)	75%	extreme
November Weather	25°C (77°F)	40 mm (1.6 inches)	79%	extreme
December Weather	26°C (79°F)	148 mm (5.8 inches)	80%	extreme