Climate and Average Weather Year Round in San Giorgio Ionico Italy

In San Giorgio Ionico, the summers are short, hot, dry, and mostly clear and the winters are long, cold, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 40°F to 90°F and is rarely below 32°F or above 97°F.

Based on the beach/pool score, the best time of year to visit San Giorgio Ionico for hot-weather activities is from mid June to early September.

The hot season lasts for 2.8 months, from June 14 to September 8, with an average daily high temperature above 83°F. The hottest month of the year in San Giorgio Ionico is July, with an average high of 89°F and low of 68°F.

The cool season lasts for 4.2 months, from November 21 to March 27, with an average daily high temperature below 62°F. The coldest month of the year in San Giorgio Ionico is January, with an average low of 40°F and high of 55°F.

In San Giorgio Ionico, 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 San Giorgio Ionico begins around June 9 and lasts for 3.1 months, ending around September 13.

The clearest month of the year in San Giorgio Ionico is July, during which on average the sky is clear, mostly clear, or partly cloudy 91% of the time.

The cloudier part of the year begins around September 13 and lasts for 8.9 months, ending around June 9.

The cloudiest month of the year in San Giorgio Ionico is December, during which on average the sky is overcast or mostly cloudy 46% 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 San Giorgio Ionico varies throughout the year.

The wetter season lasts 7.8 months, from September 10 to May 3, with a greater than 15% chance of a given day being a wet day. The month with the most wet days in San Giorgio Ionico is November, with an average of 7.0 days with at least 0.04 inches of precipitation.

The drier season lasts 4.2 months, from May 3 to September 10. The month with the fewest wet days in San Giorgio Ionico is July, with an average of 2.2 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 San Giorgio Ionico is November, with an average of 7.0 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 25% on November 28.

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. San Giorgio Ionico experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in San Giorgio Ionico. The month with the most rain in San Giorgio Ionico is November, with an average rainfall of 2.4 inches.

The month with the least rain in San Giorgio Ionico is July, with an average rainfall of 0.5 inches.

The length of the day in San Giorgio Ionico varies significantly over the course of the year. In 2025, the shortest day is December 21, with 9 hours, 17 minutes of daylight; the longest day is June 21, with 15 hours, 4 minutes of daylight.

The earliest sunrise is at 5:19 AM on June 14, and the latest sunrise is 1 hour, 54 minutes later at 7:13 AM on January 4. The earliest sunset is at 4:23 PM on December 7, and the latest sunset is 4 hours, 1 minute later at 8:24 PM on June 27.

Daylight saving time (DST) is observed in San Giorgio Ionico during 2025, starting in the spring on March 30, lasting 6.9 months, and ending in the fall on October 26.

The figure below presents a compact representation of key lunar data for 2025. 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.

San Giorgio Ionico experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.2 months, from June 7 to October 13, during which time the comfort level is muggy, oppressive, or miserable at least 9% of the time. The month with the most muggy days in San Giorgio Ionico is August, with 10.6 days that are muggy or worse.

The least muggy day of the year is February 22, 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 San Giorgio Ionico experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.6 months, from November 2 to April 21, with average wind speeds of more than 10.9 miles per hour. The windiest month of the year in San Giorgio Ionico is February, with an average hourly wind speed of 12.5 miles per hour.

The calmer time of year lasts for 6.4 months, from April 21 to November 2. The calmest month of the year in San Giorgio Ionico is August, with an average hourly wind speed of 9.3 miles per hour.

The predominant average hourly wind direction in San Giorgio Ionico varies throughout the year.

The wind is most often from the south for 1.0 months, from April 4 to May 4, with a peak percentage of 38% on April 19. The wind is most often from the north for 11 months, from May 4 to April 4, with a peak percentage of 45% on January 1.

San Giorgio Ionico 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 3.0 months, from June 29 to September 28, with an average temperature above 74°F. The month of the year in San Giorgio Ionico with the warmest water is August, with an average temperature of 79°F.

The time of year with cooler water lasts for 4.6 months, from December 9 to April 28, with an average temperature below 61°F. The month of the year in San Giorgio Ionico with the coolest water is February, with an average temperature of 56°F.

To characterize how pleasant the weather is in San Giorgio Ionico 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 times of year to visit San Giorgio Ionico for general outdoor tourist activities are from early May to early July and from late August to mid October, with a peak score in the last week of May.

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 San Giorgio Ionico for hot-weather activities is from mid June to early September, with a peak score in the first 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 San Giorgio Ionico typically lasts for 10 months (312 days), from around February 15 to around December 24, rarely starting after March 23, or ending before December 2.

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 San Giorgio Ionico should appear around February 15, only rarely appearing before February 1 or after March 7.

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 12 to August 17, with an average daily incident shortwave energy per square meter above 6.7 kWh. The brightest month of the year in San Giorgio Ionico is July, with an average of 7.7 kWh.

The darker period of the year lasts for 3.6 months, from October 29 to February 16, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest month of the year in San Giorgio Ionico is December, with an average of 1.9 kWh.

For the purposes of this report, the geographical coordinates of San Giorgio Ionico are 40.458 deg latitude, 17.380 deg longitude, and 253 ft elevation.

The topography within 2 miles of San Giorgio Ionico contains only modest variations in elevation, with a maximum elevation change of 449 feet and an average elevation above sea level of 202 feet. Within 10 miles contains only modest variations in elevation (1,142 feet). Within 50 miles also contains very significant variations in elevation (1,886 feet).

The area within 2 miles of San Giorgio Ionico is covered by cropland (60%), artificial surfaces (23%), and grassland (17%), within 10 miles by cropland (69%) and water (15%), and within 50 miles by water (53%) and cropland (39%).