This report describes the typical weather at the Naples International Airport (Capodichino Airport) (Naples, Italy) weather station over the course of an average April. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Naples has a mediterranean climate with dry hot summers and mild winters. The area within 25 mi of this station is covered by croplands (41%), oceans and seas (34%), forests (16%), shrublands (6%), and built-up areas (3%).
The month of April is characterized by rising daily high temperatures, with daily highs increasing from 63°F to 69°F over the course of the month, exceeding 76°F or dropping below 56°F only one day in ten.
Over the course of April, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 1:15 hours, implying an average day-over-day increase of 2.5 minutes.
The shortest day of the month is April 1 with 12:42 hours of daylight; the longest day is April 30 with 13:57 hours of daylight.
The earliest sunrise is at 6:02am on April 30; the latest sunset is at 7:59pm on April 30; the latest sunrise is at 6:46am on April 1; the earliest sunset is at 7:28pm on April 1.
Daylight savings time is observed in 2012 but it neither starts nor ends in April, so the entire month is in daylight time.
The median cloud cover is 46% (partly cloudy) and does not vary substantially over the course of the month.
On April 15, a representative day, the sky is clear or mostly clear 40% of the time, partly cloudy 36% of the time, and mostly cloudy or overcast 16% of the time.
The average probability that some form of precipitation will be observed in a given day is 42%, with little variation over the course of the month.
Throughout April, the most common forms of precipitation are moderate rain, thunderstorms, and light rain.
Moderate rain is the most severe precipitation observed during 50% of those days with precipitation. It is most likely around April 7, when it is observed during 22% of all days.
Thunderstorms are the most severe precipitation observed during 23% of those days with precipitation. They are most likely around April 15, when it is observed during 10% of all days.
Light rain is the most severe precipitation observed during 17% of those days with precipitation. It is most likely around April 7, when it is observed during 7% of all days.
Either snow is exceptionally unlikely to fall at this location in April or this station does not reliably report precipitation types.
The relative humidity typically ranges from 50% (mildly humid) to 93% (very humid) over the course of a typical April, rarely dropping below 32% (comfortable) and reaching as high as 100% (very humid).
The air is driest around April 30, at which time the relative humidity drops below 60% (mildly humid) three days out of four; it is most humid around April 14, rising above 89% (very humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a typical April, the dew point typically varies from 40°F (dry) to 56°F (comfortable) and is rarely below 29°F (dry) or above 61°F (comfortable).
The time of the month between April 1 and April 30 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of April typical wind speeds vary from 0 mph to 12 mph (calm to moderate breeze), rarely exceeding 21 mph (fresh breeze).
The highest average wind speed of 6 mph (light breeze) occurs around April 3, at which time the average daily maximum wind speed is 12 mph (moderate breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around April 30, at which time the average daily maximum wind speed is 12 mph (gentle breeze).