July weather forecast
Naples, Italy

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A distant view of Mount Vesuvius, from Naples in Italy, with a beautiful blue waterfront
A distant view of Mount Vesuvius, from Naples in Italy, with a beautiful blue waterfront

Weather in July

July is the heart of the summer in Naples, characterized by high temperatures and low rainfall. The scorching temperatures reach their apex with a torrid 30°C (86°F) high. This is the driest period of the year with a remarkably low rainfall of 14mm (0.55"). Despite the scorching temperatures, the constant sea breezes pleasantly moderate the warm air. If sun and sand feature heavily in the plan, July is certainly the month to mark.

Temperature

July marks a minor ascent in the average high-temperature in Naples, adjusting from June's moderately hot 26°C (78.8°F) to a still warm 29.3°C (84.7°F). In the month of July, the average temperature dips to a pleasant 21.8°C (71.2°F) during the night.

Heat index

In July, the heat index is calculated to be a tropical 32°C (89.6°F). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
Heat index determinations are made taking into account the shade and light air movements. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

The average relative humidity in July in Naples is 62%.

Rainfall

In Naples, during July, the rain falls for 5.2 days and regularly aggregates up to 14mm (0.55") of precipitation. In Naples, during the entire year, the rain falls for 139.4 days and collects up to 569mm (22.4") of precipitation.

Snowfall

March through December are months without snowfall in Naples.

Sea temperature

In Naples, in July, the average water temperature is 25.8°C (78.4°F).
Note: For swimming, diving, or other water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) provide the most enjoyable experience for extended periods without discomfort.

Daylight

In Naples, Italy, the average length of the day in July is 14h and 46min.
On the first day of July, sunrise is at 05:35 and sunset at 20:38. On the last day of the month, sunrise is at 05:58 and sunset at 20:19 CEST.

Sunshine

The month with the most sunshine in Naples is July, with an average of 12.1h of sunshine.

UV index

With an average maximum UV index of 7, July is the month with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 7 in July translates into this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.
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Frequently asked questions

How hot does it get in Naples in July?

Naples in July has an average high-temperature of 29.3°C (84.7°F) and an average low-temperature of 21.8°C (71.2°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in July is calculated to be 32°C (89.6°F).

What is the average humidity in July in Naples?

In July, the average relative humidity in Naples is 62%.

How many days does it rain in July in Naples?

In Naples, in July, during 5.2 rainfall days, 14mm (0.55") of precipitation is typically accumulated.

When it does not snow in Naples?

March through December are months without snowfall in Naples, Italy.

What is the sea water temperature in July in Naples?

In Naples, Italy, in July, the average water temperature is 25.8°C (78.4°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in July in Naples?

The average day length in July is 14h and 46min.

When is the sunrise / sunset in July in Naples?

In July, on the first day of the month, sunrise is at 05:35 and sunset at 20:38. On the last day of the month, in Naples, Italy, sunrise is at 05:58 and sunset at 20:19 CEST.

What month has the most sunshine in Naples?

With an average of 12.1h of sunshine, July has the most sunshine of the year.

How many hours of sunshine does Naples have in July?

In July, the average sunshine duration is 12.1h.

What is the month with the highest UV index in Naples?

July is the month with the highest UV index, with an average maximum UV index of 7.

How high is the UV index in July in Naples?

In Naples, Italy, the average daily maximum UV index in July is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in July
Naples, Italy

Average temperature in July - Naples, Italy
  • Average high temperature in July: 29.3°C

The warmest month (with the highest average high temperature) is August (30°C).
The month with the lowest average high temperature is January (12.3°C).

  • Average low temperature in July: 21.8°C

The month with the highest average low temperature is August (22.7°C).
The coldest months (with the lowest average low temperature) are January and February (7.8°C).

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Average pressure in July
Naples, Italy

Average pressure in July - Naples, Italy
  • Average pressure in July: 1014.1mbar

The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is April (1014mbar).

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Average wind speed in July
Naples, Italy

Average wind speed in July - Naples, Italy
  • Average wind speed in July: 9km/h

The windiest month (with the highest average wind speed) is February (13.9km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).

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Average humidity in July
Naples, Italy

Average humidity in July - Naples, Italy
  • Average humidity in July: 62%

The months with the highest relative humidity are January and November (73%).
The month with the lowest relative humidity is August (61%).

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Average rainfall in July
Naples, Italy

Average rainfall in July - Naples, Italy
  • Average rainfall in July: 14mm

The wettest month (with the highest rainfall) is November (114mm).
The driest month (with the least rainfall) is August (8mm).

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Average rainfall days in July
Naples, Italy

Average rainfall days in July - Naples, Italy
  • Average rainfall days in July: 5.2 days

The month with the highest number of rainy days is January (15.4 days).
The months with the least rainy days are July and August (5.2 days).

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Average snowfall in July
Naples, Italy

Average snowfall in July - Naples, Italy
  • Average snowfall in July: 0mm

The months with the highest snowfall are January and February (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in July
Naples, Italy

Average snowfall days in July - Naples, Italy
  • Average snowfall days in July: 0 days

The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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Average sea temperature in July
Naples, Italy

Average sea temperature in July - Naples, Italy
  • Average sea temperature in July: 25.8°C

The best month for swimming (with the highest average sea temperature) is August (26°C).
The coldest month (with the lowest average sea temperature) is February (13.9°C).

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Average daylight in July /
Average sunshine in July
Naples, Italy

Average daylight in July / Average sunshine in July - Naples, Italy
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in July: 12h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

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Average sunshine days in July
Naples, Italy

Average sunshine days in July - Naples, Italy
  • Average sunshine days in July: 24 days

The month with the most sunshine days is July (24 days).
The month with the least sunshine days is February (11.1 days).

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Average UV index in July
Naples, Italy

Average UV index in July - Naples, Italy
  • Average UV index in July: 7

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in July
Naples, Italy

Average cloud cover in July - Naples, Italy
  • Average cloud cover in July: 10

The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in July
Naples, Italy

Average visibility in July - Naples, Italy
  • Average visibility in July: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Naples, Italy

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