San Giovanni di Galermo Temperature by Month

The average annual maximum temperature in San Giovanni di Galermo, Sicily, Italy is 22°C (72°F), with daytime highs ranging from 15°C (59°F) in January to 31°C (88°F) in August. This page covers monthly averages, day-night differences, and how San Giovanni di Galermo compares to cities worldwide.

Visitors to San Giovanni di Galermo can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 23°C (73°F) in August to 7°C (45°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in San Giovanni di Galermo by month:

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. August, the warmest month, sees 281 hours of sunshine.

The chart below shows the average temperature throughout the year:

San Giovanni di Galermo's average annual maximum temperature is 22°C (72°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In San Giovanni di Galermo, January is the coolest month, with average highs of 15°C (59°F) and humidity around 73%, considered high. In August, the warmest month, temperatures average 31°C (88°F) with 67% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in San Giovanni di Galermo this rarely lasts long on the ground.

For more on San Giovanni di Galermo's weather, including monthly rainfall, sunshine hours, and humidity, visit our San Giovanni di Galermo climate page.