July weather forecast and climate
Naples, Italy

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
July, like June, in Naples, Italy, is a moderately hot summer month, with temperature in the range of an average low of 21.8°C (71.2°F) and an average high of 29.3°C (84.7°F).
An excellent water temperature of 25.8°C (78.4°F) and only 5.2 rainfall days, with 14mm (0.55") of accumulated rainfall, makes July a prime for swimming and other water activities.

Temperature

In July, the average high-temperature in Naples slightly increases, from 26°C (78.8°F) in June, to a still moderately hot 29.3°C (84.7°F). In July, in Naples, Italy, the average low-temperature is 21.8°C (71.2°F).

Heat index

In July, the average heat index is calculated to a hot 31.9°C (89.4°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, differences in body mass, height, and shape, wind), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Naples, the average relative humidity is 62%.

Rainfall

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

Snowfall

In Naples snow does not fall in March through December.

Sea temperature

In Naples, the average water temperature is 25.8°C (78.4°F).
Note: 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.

Daylight

In Naples, the average length of the day is 14.8h.

Sunshine

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

UV index

July is the month with the highest UV index in Naples, Italy, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in July in Naples?

In Naples, in July, the average high-temperature is 29.3°C (84.7°F), and the average low-temperature is 21.8°C (71.2°F). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that calculates temperature value influenced by the moisture in the air, is evaluated at 31.9°C (89.4°F).

What is the average humidity in July in Naples?

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

How many days does it rain in July in Naples?

In July, the rain falls for 5.2 days. Throughout July, 14mm (0.55") of precipitation is accumulated.

When it does not snow in Naples?

In Naples, Italy, snow does not fall in March through December.

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). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Naples have in July?

In July, the average length of the day is 14.8h.

What month has the most sunshine in Naples?

July has the most sunshine of the year in Naples, Italy, with an average of 12.1h of sunshine.

How many hours of sunshine does Naples have in July?

In Naples, Italy, the average sunshine in July is 12.1h.

When is the highest UV index in Naples?

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

What is the UV index intensity in July in Naples?

In July, the average daily maximum UV index in Naples, Italy, is 7. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to the Sun's UV rays.
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).

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).

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).

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

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

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).

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).
Months with the least rainy days are July and August (5.2 days).

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

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

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

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

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).

Average daylight in July / Average sunshine in July - Naples, Italy
  • Average daylight in July: 14.8h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in July: 12.1h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is January (Average sunshine: 5.6h).

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).

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).
Months with the lowest UV index are January, February and December (UV index 3).

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).

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

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