May Weather in Mahwah, United States

Last updated: June 24, 2025

In Mahwah, United States, the average temperature in May hovers around 16°C (61°F). The weather can be quite variable, with minimums dipping to 0°C (33°F) and maximums soaring to 33°C (92°F). Expect 130 mm (5.1 in) of precipitation spread across about 13 days, contributing to an average humidity of 69%. Prepare for a mix of pleasant and unpredictable weather during your visit!

May Temperature in Mahwah

In May in Mahwah, the average temperature is 16°C (61°F), with maximums reaching up to 33°C (92°F) and minimums dropping as low as 0°C (33°F). Be sure to pack for a range of temperatures when traveling during this time!

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

The chart illustrates May temperature patterns in Mahwah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mahwah, May typically has an average temperature of 16°C (61°F), with highs reaching up to 33°C (92°F) and lows dropping to around 0°C (33°F).

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

May Precipitation in Mahwah

In Mahwah in May, the precipitation amount is 130 mm (5.1 in) spread over 13 days.

May Precipitation Trends in Mahwah

The chart displays monthly precipitation patterns in Mahwah, 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 Mahwah, May typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 13 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 Mahwah

In Mahwah in May, humidity is 69%. With an average temperature of 16°C (61°F), this humidity feels like a mild, humid embrace, making travel enjoyable yet requiring a light layer for comfort while exploring.

May Average Humidity in Mahwah

This chart illustrates the average monthly humidity levels in Mahwah, 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 Mahwah is approximately 69%, 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 Mahwah

In Mahwah 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 Mahwah.

Maximum UV Index Levels in Mahwah for May

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

Data source: Mahwah 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 Mahwah Compares to Other Months

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

This table compares monthly weather conditions in Mahwah, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	70 mm (2.8 inches)	84%	moderate
February Weather	2°C (35°F)	99 mm (3.9 inches)	82%	moderate
March Weather	4°C (40°F)	95 mm (3.8 inches)	81%	high
April Weather	10°C (51°F)	118 mm (4.7 inches)	78%	very high
May Weather	16°C (61°F)	130 mm (5.1 inches)	69%	very high
June Weather	21°C (70°F)	99 mm (3.9 inches)	69%	very high
July Weather	24°C (76°F)	147 mm (5.8 inches)	62%	very high
August Weather	23°C (74°F)	131 mm (5.2 inches)	65%	very high
September Weather	20°C (68°F)	114 mm (4.5 inches)	68%	very high
October Weather	14°C (58°F)	141 mm (5.6 inches)	74%	high
November Weather	6°C (44°F)	88 mm (3.5 inches)	82%	moderate
December Weather	2°C (36°F)	111 mm (4.4 inches)	80%	low