nomadseason

December Weather in Naples, United States

Last updated: June 24, 2025

In December, the average temperature in Naples, United States hovers around 10°C (51°F). Expect a range where the minimum dips to -4°C (25°F) and the maximum can reach a warm 27°C (82°F). With 118 mm (4.6 in) of precipitation over about 8 days, the atmosphere tends to be quite humid, boasting an average humidity of 88%.

December Temperature in Naples

In December in Naples, the average temperature is 10°C (51°F), with maximums reaching 27°C (82°F) and minimums dropping as low as -4°C (25°F). This diverse temperature range makes it essential for travelers to pack accordingly to ensure comfort throughout their adventures.

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

The chart illustrates December 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, December typically has an average temperature of 10°C (51°F), with highs reaching up to 27°C (82°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec464959647380838378675551
Data source: Temperature data for Naples generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Naples

In Naples in December, the total precipitation amount is 118 mm (4.6 in) which falls over the course of 8 days.

December Precipitation Trends in Naples

The chart displays monthly precipitation patterns in Naples, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Naples, December typically receives around 118 mm (4.6 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec10314613119916410379848612067118
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Naples

In Naples in December, humidity is 88%. With an average temperature of 10°C (51°F), this humidity feels like a thick blanket of moisture enveloping you, making every step feel heavier and leaving you yearning for a refreshing breeze as you navigate the streets.

December Average Humidity in Naples

This chart illustrates the average monthly humidity levels in Naples, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Naples is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%78%79%81%77%72%65%63%70%82%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Naples

In Naples in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Naples for better planning.

Maximum UV Index Levels in Naples for December

The chart shows the monthly maximum UV Index (UVI) for Naples in December, 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 December, the maximum UV index in Naples typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101112111110864
Data source: Naples December 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 December 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 December’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 December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)102 mm (4.0 inches)82%moderate
February Weather9°C (49°F)146 mm (5.8 inches)80%high
March Weather15°C (59°F)130 mm (5.1 inches)78%very high
April Weather18°C (64°F)198 mm (7.8 inches)79%very high
May Weather23°C (73°F)163 mm (6.4 inches)81%extreme
June Weather27°C (80°F)103 mm (4.1 inches)77%extreme
July Weather28°C (84°F)79 mm (3.1 inches)72%extreme
August Weather28°C (83°F)83 mm (3.3 inches)65%extreme
September Weather26°C (78°F)86 mm (3.4 inches)63%very high
October Weather20°C (67°F)120 mm (4.7 inches)70%very high
November Weather13°C (55°F)67 mm (2.6 inches)82%high
December Weather10°C (51°F)118 mm (4.6 inches)88%moderate

Compare Naples's Climate with Cities Worldwide