July Weather at Genoa Cristoforo Colombo Airport Italy

Daily high temperatures increase by 4°F, from 78°F to 82°F, rarely falling below 73°F or exceeding 87°F.

Daily low temperatures increase by 3°F, from 69°F to 72°F, rarely falling below 64°F or exceeding 77°F.

For reference, on August 5, the hottest day of the year, temperatures at Genoa Cristoforo Colombo Airport typically range from 72°F to 82°F, while on January 15, the coldest day of the year, they range from 43°F to 52°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Itō, Japan (6,134 miles away) is the far-away foreign place with temperatures most similar to Genoa Cristoforo Colombo Airport (view comparison).

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The month of July at Genoa Cristoforo Colombo Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 23% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 21% on July 20.

The clearest day of the month is July 20, with clear, mostly clear, or partly cloudy conditions 79% of the time.

For reference, on November 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 53%, while on July 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 79%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Genoa Cristoforo Colombo Airport, the chance of a wet day over the course of July is essentially constant, remaining around 13% throughout.

For reference, the year's highest daily chance of a wet day is 28% on November 1, and its lowest chance is 11% on July 19.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during July at Genoa Cristoforo Colombo Airport is essentially constant, remaining about 1.1 inches throughout, and rarely exceeding 2.7 inches or falling below 0.1 inches.

The lowest average 31-day accumulation is 0.9 inches on July 15.

Over the course of July at Genoa Cristoforo Colombo Airport, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 49 minutes, implying an average daily decrease of 1 minute, 38 seconds, and weekly decrease of 11 minutes, 26 seconds.

The shortest day of the month is July 31, with 14 hours, 40 minutes of daylight and the longest day is July 1, with 15 hours, 28 minutes of daylight.

The earliest sunrise of the month at Genoa Cristoforo Colombo Airport is 5:44 AM on July 1 and the latest sunrise is 27 minutes later at 6:10 AM on July 31.

The latest sunset is 9:12 PM on July 1 and the earliest sunset is 22 minutes earlier at 8:50 PM on July 31.

Daylight saving time is observed at Genoa Cristoforo Colombo Airport during 2024, but it neither starts nor ends during July, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:40 AM and sets 15 hours, 33 minutes later, at 9:12 PM, while on December 21, the shortest day of the year, it rises at 7:57 AM and sets 8 hours, 50 minutes later, at 4:48 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for July 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy at Genoa Cristoforo Colombo Airport is rapidly increasing during July, rising from 46% to 59% over the course of the month.

For reference, on August 7, the muggiest day of the year, there are muggy conditions 61% of the time, while on November 20, the least muggy day of the year, there are muggy conditions 0% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Genoa Cristoforo Colombo Airport is essentially constant during July, remaining within 0.2 miles per hour of 5.8 miles per hour throughout.

For reference, on February 7, the windiest day of the year, the daily average wind speed is 7.6 miles per hour, while on August 9, the calmest day of the year, the daily average wind speed is 5.4 miles per hour.

The hourly average wind direction at Genoa Cristoforo Colombo Airport throughout July is predominantly from the south, with a peak proportion of 64% on July 5.

Genoa Cristoforo Colombo Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature at Genoa Cristoforo Colombo Airport is gradually increasing during July, rising by 4°F, from 73°F to 76°F, over the course of the month.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

While it does not do so every year, freezing temperatures are seen at Genoa Cristoforo Colombo Airport over some winters. The day least likely to be in the growing season is January 16, with a 61% chance.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days at Genoa Cristoforo Colombo Airport are rapidly increasing during July, increasing by 778°F, from 1,568°F to 2,345°F, over the course of the month.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy at Genoa Cristoforo Colombo Airport is gradually decreasing during July, falling by 0.5 kWh, from 7.4 kWh to 6.9 kWh, over the course of the month.

The highest average daily incident shortwave solar energy during July is 7.4 kWh on July 5.

For the purposes of this report, the geographical coordinates of Genoa Cristoforo Colombo Airport are 44.415 deg latitude, 8.850 deg longitude, and 23 ft elevation.

The topography within 2 miles of Genoa Cristoforo Colombo Airport contains very significant variations in elevation, with a maximum elevation change of 1,348 feet and an average elevation above sea level of 102 feet. Within 10 miles contains very significant variations in elevation (3,898 feet). Within 50 miles also contains extreme variations in elevation (7,005 feet).

The area within 2 miles of Genoa Cristoforo Colombo Airport is covered by water (42%), artificial surfaces (40%), and trees (12%), within 10 miles by water (46%) and trees (31%), and within 50 miles by water (35%) and trees (35%).