Guidonia Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Guidonia.
Climate overview of Guidonia
The climate in Guidonia, Lazio, Italy, is marked by large temperature swings across the seasons, ranging from 32°C (90°F) in August to 12°C (54°F) in January.
The city receives around 985 mm (39 in) of rain/snowfall per year. It experiences a distinct dry season from July to August, with very warm summers and cold winters. November is the wettest month and July the driest. Sunshine peaks in July, when the city sees around 11.1 hours of sunshine per day.
Guidonia Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Guidonia - and find the best time to visit.
Monthly Temperature in Guidonia
In Guidonia, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a very warm 32°C (90°F) in August to a chilly 12°C (54°F) in January.
Nighttime temperatures range from 19°C (66°F) in August to 2°C (36°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Guidonia
On average, Guidonia receives a reasonable amount of rain/snowfall, with an annual precipitation of 985 mm (39 in). The seasons in Guidonia bring significant changes in precipitation. The wettest month, November, receives high rainfall, with an average of 136 mm (5.4 in) of precipitation. This rainfall is distributed across 15 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 29 mm (1.1 in) over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Guidonia Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Guidonia
In Guidonia, summer days are longer and more sunny, with daily sunshine hours peaking at 11.1 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 3.7 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Guidonia by Month
The relative humidity is high throughout the year in Guidonia.
The city experiences its highest humidity in November, reaching 77%. In July, the humidity drops to its lowest level at 72%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Guidonia
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June and September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July and August
- Seasonal pattern: A distinct dry season from July to August, with very warm summers and cold winters
Frequently asked questions about the climate in Guidonia
What is the best time to visit Guidonia?
May, June and September typically offer the most optimal weather in Guidonia. In contrast, December tends to have less optimal conditions. Guidonia has a distinct dry season from July to August, with very warm summers and cold winters.
What temperatures can I expect in Guidonia?
Daytime highs range from 12°C (54°F) in January to 32°C (90°F) in August. Nighttime lows range from 2°C (36°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Guidonia get?
Annual rainfall is around 985 mm (39 in). November is the wettest month with 136 mm (5.4 in), while July is the driest with 29 mm (1.1 in).
How sunny is Guidonia?
Guidonia receives around 2,473 hours of sunshine per year. July is the sunniest month with 332 hours, while December is the cloudiest with just 112 hours. Overall, Guidonia enjoys abundant sunshine.
Guidonia 3-Day Forecast
Guidonia on the map
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