May Weather in Naples, United States

Last updated: June 24, 2025

In Naples, United States, the average temperature in May is a mild 14°C (57°F), with a potential range from a chilly -5°C (24°F) to a warm 30°C (87°F). Expect approximately 33 mm (1.3 in) of precipitation spread over 8 days, contributing to an average humidity of 64%. Whether you're planning outdoor activities or cozy indoor days, this month offers a delightful mix of weather experiences!

May Temperature in Naples

In May in Naples, the average temperature is 14°C (57°F). The maximum can reach 30°C (87°F), and the minimum can be as low as -5°C (24°F). This varied climate makes Naples a unique destination for travelers seeking both warmth and a chance to experience cooler weather.

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

The chart illustrates May temperature patterns in Naples, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Naples, May typically has an average temperature of 14°C (57°F), with highs reaching up to 30°C (87°F) and lows dropping to around -5°C (24°F).

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

May Precipitation in Naples

In Naples in May, the precipitation amount is 33 mm (1.3 in) during a span of 8 days.

May Precipitation Trends in Naples

The chart displays monthly precipitation patterns in Naples, 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 Naples, May typically receives around 33 mm (1.3 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 Naples

In Naples in May, humidity is 64%. With an average temperature of 14°C (57°F), this humidity feels like a mild embrace, making it comfortable for traveling but with a slight stickiness in the air that encourages you to stay hydrated and seek shade during the warmest part of the day.

May Average Humidity in Naples

This chart illustrates the average monthly humidity levels in Naples, 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 Naples is approximately 64%, 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 Naples

In Naples 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 Naples.

Maximum UV Index Levels in Naples for May

The chart shows the monthly maximum UV Index (UVI) for Naples 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 Naples typically reaches 11, which falls under the extreme exposure category.

Data source: Naples 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 Naples Compares to Other Months

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

This table compares monthly weather conditions in Naples, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	26 mm (1.0 inches)	92%	moderate
February Weather	-4°C (25°F)	38 mm (1.5 inches)	93%	high
March Weather	2°C (37°F)	40 mm (1.6 inches)	85%	very high
April Weather	8°C (46°F)	31 mm (1.2 inches)	73%	very high
May Weather	14°C (57°F)	33 mm (1.3 inches)	64%	extreme
June Weather	21°C (70°F)	17 mm (0.7 inches)	57%	extreme
July Weather	25°C (77°F)	11 mm (0.4 inches)	45%	extreme
August Weather	23°C (73°F)	18 mm (0.7 inches)	41%	extreme
September Weather	18°C (64°F)	19 mm (0.8 inches)	50%	very high
October Weather	8°C (46°F)	35 mm (1.4 inches)	70%	high
November Weather	3°C (37°F)	22 mm (0.9 inches)	84%	moderate
December Weather	-4°C (25°F)	28 mm (1.1 inches)	90%	moderate