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May Weather in Naples, United States

Last updated: June 24, 2025

In Naples, United States, the average temperature in May hovers around 14°C (57°F). During this month, temperatures can dip as low as -4°C (25°F) or soar to a warm 31°C (88°F). Expect about 126 mm (5.0 in) of precipitation spread over 16 days, and be prepared for a high humidity level of 82%, making it a rather damp time of year.

May Temperature in Naples

In May in Naples, the average temperature is 14°C (57°F). Maximum temperatures can reach 31°C (88°F), while minimums can drop as low as -4°C (25°F). Be prepared for a wide range of temperatures when traveling this month.

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 31°C (88°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec252734455765706962523730
Data source: Temperature data for Naples generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Naples

In Naples in May, the precipitation amount is 126 mm (5.0 in), occurring over the course of 16 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 126 mm (5.0 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec75857611212610614487861388488
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Naples

In Naples in May, humidity is 82%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making outdoor activities uncomfortable and travel more challenging due to the heavy, damp air.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
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 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 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
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.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)75 mm (3.0 inches)91%moderate
February Weather-3°C (27°F)85 mm (3.4 inches)91%moderate
March Weather1°C (34°F)76 mm (3.0 inches)88%high
April Weather7°C (45°F)112 mm (4.4 inches)88%very high
May Weather14°C (57°F)126 mm (5.0 inches)82%very high
June Weather19°C (66°F)106 mm (4.2 inches)79%very high
July Weather21°C (71°F)144 mm (5.7 inches)77%very high
August Weather20°C (69°F)87 mm (3.4 inches)72%very high
September Weather17°C (62°F)86 mm (3.4 inches)76%very high
October Weather11°C (52°F)138 mm (5.4 inches)83%high
November Weather3°C (37°F)84 mm (3.3 inches)88%moderate
December Weather-1°C (30°F)88 mm (3.5 inches)87%low

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