Genazzano Temperature by Month

The average annual maximum temperature in Genazzano, Lazio, Italy is 20°C (68°F), with daytime highs ranging from 11°C (52°F) in January to 30°C (86°F) in August. This page covers monthly averages, day-night differences, and how Genazzano compares to cities worldwide.

Visitors to Genazzano will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 18°C (64°F) in August to 1°C (34°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Genazzano by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. August, the city's warmest month, gets 298 hours of sunshine.

The chart below shows the average temperature throughout the year:

Genazzano's average annual maximum temperature is 20°C (68°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

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 the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.

In Genazzano, January is the coolest month, with average highs of 11°C (52°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.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

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