July Weather in Naples, United States

Last updated: June 24, 2025

In July, the average temperature in Naples, United States is a warm 28°C (84°F), with daily fluctuations ranging from a minimum of 17°C (63°F) to a maximum of 39°C (103°F). Visitors should also prepare for approximately 79 mm (3.1 in) of precipitation over about 11 days, accompanied by an average humidity level of 72%.

July Temperature in Naples

In July in Naples, the average temperature is 28°C (84°F). Maximum temperatures can reach 39°C (103°F), while minimums can drop to as low as 17°C (63°F). This makes it a great time to explore Naples, offering warm days and cooler evenings for a comfortable travel experience.

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 28°C (84°F), with highs reaching up to 39°C (103°F) and lows dropping to around 17°C (63°F).

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

July Precipitation in Naples

In Naples in July, the total precipitation amount is 79 mm (3.1 in), falling over the course of 11 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 79 mm (3.1 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in Naples

In Naples in July humidity is 72%. With an average temperature of 28°C (84°F), this humidity feels like walking through a warm, dense fog, making outdoor activities exhausting and encouraging travelers to stay hydrated and seek shade more often.

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 72%, offering insight into how humid the weather typically is during this month.

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 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 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 11, which falls under the extreme exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	102 mm (4.0 inches)	82%	moderate
February Weather	9°C (49°F)	146 mm (5.8 inches)	80%	high
March Weather	15°C (59°F)	130 mm (5.1 inches)	78%	very high
April Weather	18°C (64°F)	198 mm (7.8 inches)	79%	very high
May Weather	23°C (73°F)	163 mm (6.4 inches)	81%	extreme
June Weather	27°C (80°F)	103 mm (4.1 inches)	77%	extreme
July Weather	28°C (84°F)	79 mm (3.1 inches)	72%	extreme
August Weather	28°C (83°F)	83 mm (3.3 inches)	65%	extreme
September Weather	26°C (78°F)	86 mm (3.4 inches)	63%	very high
October Weather	20°C (67°F)	120 mm (4.7 inches)	70%	very high
November Weather	13°C (55°F)	67 mm (2.6 inches)	82%	high
December Weather	10°C (51°F)	118 mm (4.6 inches)	88%	moderate