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March Weather in Naples, United States

Last updated: June 24, 2025

In March, the average temperature in Naples, United States hovers around 2°C (37°F). Expect a chill, with minimums dipping as low as -18°C (0°F) and highs reaching up to 21°C (70°F). During this month, anticipate about 40 mm (1.6 in) of precipitation spread over 9 days, and don’t forget to prepare for the average humidity of 85% that lingers in the air!

March Temperature in Naples

In March in Naples, the average temperature is 2°C (37°F). Maximum temperatures can reach 21°C (70°F), while minimums can drop as low as -18°C (0°F). Travelers should be prepared for a wide range of temperatures, so layering clothing is essential.

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

The chart illustrates March 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, March typically has an average temperature of 2°C (37°F), with highs reaching up to 21°C (70°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec202536465770767364463725
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.

March Precipitation in Naples

In Naples in March, the precipitation amount is 40 mm (1.6 in) over the course of 9 days.

March Precipitation Trends in Naples

The chart displays monthly precipitation patterns in Naples, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Naples, March typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec263840313317111819352328
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Naples

In Naples in March, humidity is 85%. With an average temperature of 2°C (37°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions feel much colder than the thermometer suggests.

March Average Humidity in Naples

This chart illustrates the average monthly humidity levels in Naples, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Naples is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%85%73%64%57%45%41%50%70%84%90%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Naples

In Naples in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Naples.

Maximum UV Index Levels in Naples for March

The chart shows the monthly maximum UV Index (UVI) for Naples in March, 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 March, the maximum UV index in Naples typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec368101112121110753
Data source: Naples March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
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 Weather2°C (37°F)40 mm (1.6 inches)85%very high
April Weather8°C (46°F)31 mm (1.2 inches)73%very high
May Weather14°C (57°F)33 mm (1.3 inches)64%extreme
June Weather21°C (70°F)17 mm (0.7 inches)57%extreme
July Weather25°C (77°F)11 mm (0.4 inches)45%extreme
August Weather23°C (73°F)18 mm (0.7 inches)41%extreme
September Weather18°C (64°F)19 mm (0.8 inches)50%very high
October Weather8°C (46°F)35 mm (1.4 inches)70%high
November Weather3°C (37°F)22 mm (0.9 inches)84%moderate
December Weather-4°C (25°F)28 mm (1.1 inches)90%moderate

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