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July Weather in Naples, United States

Last updated: June 24, 2025

In Naples, United States, the average temperature in July is a pleasant 21°C (71°F). However, temperatures can range from a cool 10°C (50°F) to a warm 34°C (93°F). Expect some rainfall too, with an average precipitation of 144 mm (5.7 in) spread over 17 days. Be prepared for a humid atmosphere, as the average humidity sits at 77%.

July Temperature in Naples

In July in Naples, the average temperature is 21°C (71°F). The maximum can reach 34°C (93°F), while the minimum can drop as low as 10°C (50°F). It’s a great time to visit if you enjoy warm weather with some cooler evenings!

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

The chart illustrates July 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, July typically has an average temperature of 21°C (71°F), with highs reaching up to 34°C (93°F) and lows dropping to around 10°C (50°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.

July Precipitation in Naples

In Naples in July, the precipitation amount is 144 mm (5.7 in) over the course of 17 days.

July Precipitation Trends in Naples

The chart displays monthly precipitation patterns in Naples, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Naples, July typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec75857611212610614487861388488
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Naples

In Naples in July, humidity is 77%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace that envelops you, making it both refreshing and slightly heavy, which can be a bit tiring for traveling.

July Average Humidity in Naples

This chart illustrates the average monthly humidity levels in Naples, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Naples is approximately 77%, 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 July generated using information from the Copernicus Climate Change Service.

July UV Index in Naples

In Naples in July, 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 July

The chart shows the monthly maximum UV Index (UVI) for Naples in July, 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 July, the maximum UV index in Naples typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
Data source: Naples July 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 July 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 July’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 July’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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