Castel di Guido Temperature by Month

The average annual maximum temperature in Castel di Guido, Italy is 21°C (70°F), with daytime highs ranging from 13°C (55°F) in January to 30°C (86°F) in August. This page covers monthly averages, day-night differences, and how Castel di Guido compares to cities worldwide.

Depending on the time of the year, temperatures range from comfortable to mild in Castel di Guido. At night, minimum temperatures range from 22°C (72°F) in August to 6°C (43°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Castel di Guido 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 298 hours of sunshine.

The chart below shows the average temperature throughout the year:

Castel di Guido's average annual maximum temperature is 21°C (70°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

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 Castel di Guido, January is the coolest month, with average highs of 13°C (55°F) and humidity around 75%, considered high. In August, the warmest month, temperatures average 30°C (86°F) with 73% 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.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

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