Climate and Average Weather Year Round in Sonnino Italy

In Sonnino, the summers are short, warm, humid, dry, and mostly clear and the winters are long, very cold, wet, and partly cloudy. Over the course of the year, the temperature typically varies from 34°F to 84°F and is rarely below 27°F or above 90°F.

Based on the beach/pool score, the best time of year to visit Sonnino for hot-weather activities is from early July to late August.

The warm season lasts for 2.8 months, from June 16 to September 9, with an average daily high temperature above 77°F. The hottest month of the year in Sonnino is August, with an average high of 83°F and low of 62°F.

The cool season lasts for 4.0 months, from November 19 to March 20, with an average daily high temperature below 56°F. The coldest month of the year in Sonnino is January, with an average low of 34°F and high of 49°F.

In Sonnino, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Sonnino begins around June 8 and lasts for 3.1 months, ending around September 10.

The clearest month of the year in Sonnino is July, during which on average the sky is clear, mostly clear, or partly cloudy 88% of the time.

The cloudier part of the year begins around September 10 and lasts for 8.9 months, ending around June 8.

The cloudiest month of the year in Sonnino is January, during which on average the sky is overcast or mostly cloudy 48% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Sonnino varies throughout the year.

The wetter season lasts 7.5 months, from September 10 to April 26, with a greater than 22% chance of a given day being a wet day. The month with the most wet days in Sonnino is November, with an average of 10.1 days with at least 0.04 inches of precipitation.

The drier season lasts 4.5 months, from April 26 to September 10. The month with the fewest wet days in Sonnino is July, with an average of 2.8 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Sonnino is November, with an average of 10.0 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 36% on November 16.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Sonnino experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Sonnino. The month with the most rain in Sonnino is November, with an average rainfall of 3.7 inches.

The month with the least rain in Sonnino is July, with an average rainfall of 0.6 inches.

The length of the day in Sonnino varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 11 minutes of daylight; the longest day is June 20, with 15 hours, 11 minutes of daylight.

The earliest sunrise is at 5:32 AM on June 14, and the latest sunrise is 2 hours, 1 minute later at 7:33 AM on January 4. The earliest sunset is at 4:37 PM on December 8, and the latest sunset is 4 hours, 7 minutes later at 8:44 PM on June 27.

Daylight saving time (DST) is observed in Sonnino during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

The figure below presents a compact representation of key lunar data for 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.

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.

Sonnino experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.3 months, from June 14 to September 23, during which time the comfort level is muggy, oppressive, or miserable at least 12% of the time. The month with the most muggy days in Sonnino is August, with 13.0 days that are muggy or worse.

The least muggy day of the year is February 25, when muggy conditions are essentially unheard of.

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 in Sonnino experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.9 months, from October 23 to April 21, with average wind speeds of more than 6.9 miles per hour. The windiest month of the year in Sonnino is December, with an average hourly wind speed of 7.5 miles per hour.

The calmer time of year lasts for 6.1 months, from April 21 to October 23. The calmest month of the year in Sonnino is August, with an average hourly wind speed of 6.1 miles per hour.

The predominant average hourly wind direction in Sonnino varies throughout the year.

The wind is most often from the west for 6.4 months, from March 19 to October 1, with a peak percentage of 48% on July 5. The wind is most often from the east for 5.6 months, from October 1 to March 19, with a peak percentage of 34% on January 1.

Sonnino 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 water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.8 months, from June 28 to September 22, with an average temperature above 74°F. The month of the year in Sonnino with the warmest water is August, with an average temperature of 78°F.

The time of year with cooler water lasts for 4.3 months, from December 17 to April 27, with an average temperature below 61°F. The month of the year in Sonnino with the coolest water is February, with an average temperature of 57°F.

To characterize how pleasant the weather is in Sonnino throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Sonnino for general outdoor tourist activities is from late May to late September, with a peak score in the last week of June.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Sonnino for hot-weather activities is from early July to late August, with a peak score in the last week of July.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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).

The growing season in Sonnino typically lasts for 8.7 months (265 days), from around March 11 to around December 1, rarely starting before February 19 or after April 5, and rarely ending before November 11 or after December 20.

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.

Based on growing degree days alone, the first spring blooms in Sonnino should appear around April 4, only rarely appearing before March 20 or after April 19.

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 experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.2 months, from May 10 to August 16, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest month of the year in Sonnino is July, with an average of 7.5 kWh.

The darker period of the year lasts for 3.6 months, from October 27 to February 15, with an average daily incident shortwave energy per square meter below 2.9 kWh. The darkest month of the year in Sonnino is December, with an average of 1.8 kWh.

For the purposes of this report, the geographical coordinates of Sonnino are 41.417 deg latitude, 13.246 deg longitude, and 965 ft elevation.

The topography within 2 miles of Sonnino contains large variations in elevation, with a maximum elevation change of 2,644 feet and an average elevation above sea level of 1,337 feet. Within 10 miles contains large variations in elevation (3,527 feet). Within 50 miles also contains extreme variations in elevation (7,487 feet).

The area within 2 miles of Sonnino is covered by cropland (44%), trees (30%), and sparse vegetation (22%), within 10 miles by cropland (55%) and trees (29%), and within 50 miles by water (41%) and cropland (28%).