May 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
May, the last month of the spring, in Naples, is a pleasant month, with temperature in the range of an average high of 21.3°C (70.3°F) and an average low of 14.8°C (58.6°F).

Temperature

In Naples, Italy, the average high-temperature is essentially the same as in April - a pleasant 21.3°C (70.3°F). In May, the average low-temperature is 14.8°C (58.6°F).

Humidity

The average relative humidity in Naples, Italy, is 69%.

Rainfall

In Naples, during May, the rain falls for 12.3 days and regularly aggregates up to 43mm (1.69") 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 May, the average water temperature is 19°C (66.2°F).
Note: For swimming, a surface water temperature of 19°C (66.2°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

In Naples, the average length of the day is 14.5h.

Sunshine

The average sunshine is 10.9h.

UV index

In Naples, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in May in Naples?

In May, the average high-temperature is 21.3°C (70.3°F), and the average low-temperature is 14.8°C (58.6°F).

What is the average humidity in May in Naples?

In Naples, Italy, the average relative humidity in May is 69%.

How much does it rain in Naples in May?

In Naples, in May, during 12.3 rainfall days, 43mm (1.69") of precipitation is typically accumulated.

When it does not snow in Naples?

In Naples snow does not fall in March through December.

What is the sea temperature in May in Naples?

In Naples, the average seawater temperature in May is 19°C (66.2°F). For most, swimming in 19°C (66.2°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

How many hours of daylight does Naples have in May?

In May, the average length of the day is 14.5h.

How many hours of sunshine does Naples have in May?

The average sunshine in May in Naples, Italy, is 10.9h.

What is the UV index reading in May in Naples?

The average daily maximum UV index in May in Naples, Italy, is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in May - Naples, Italy
  • Average high temperature in May: 21.3°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 May: 14.8°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 May - Naples, Italy
  • Average pressure in May: 1014.2mbar

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 May - Naples, Italy
  • Average wind speed in May: 10.1km/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 May - Naples, Italy
  • Average humidity in May: 69%

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

Average rainfall in May - Naples, Italy
  • Average rainfall in May: 43mm

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

Average rainfall days in May - Naples, Italy
  • Average rainfall days in May: 12.3 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 May - Naples, Italy
  • Average snowfall in May: 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 May - Naples, Italy
  • Average snowfall days in May: 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 May - Naples, Italy
  • Average sea temperature in May: 19°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 May / Average sunshine in May - Naples, Italy
  • Average daylight in May: 14.5h

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 May: 10.9h

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 May - Naples, Italy
  • Average sunshine days in May: 16.3 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 May - Naples, Italy
  • Average UV index in May: 5

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 May - Naples, Italy
  • Average cloud cover in May: 25

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 May - Naples, Italy
  • Average visibility in May: 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).