Riano Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Riano.
Climate overview of Riano
Temperatures in Riano, Lazio, Italy, vary greatly throughout the year. August is the hottest month at 32°C (90°F), while January is the coldest at 12°C (54°F).
The city receives around 965 mm (38 in) of rainfall per year. It experiences a distinct dry season from July to August, with very warm summers and mild winters. November is the wettest month and July the driest. July is the sunniest month, averaging 11.1 hours of sunshine per day.
Riano Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Riano - and find the best time to visit.
Monthly Temperature in Riano
The climate in Riano is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 32°C (90°F) in August to a moderate 12°C (54°F) in January.
Nighttime temperatures range from 20°C (68°F) in August to 3°C (37°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Riano
Generally, Riano receives mid-range precipitation levels, with 965 mm (38 in) annually. The seasons in Riano bring significant changes in precipitation. The wettest month, November, receives high rainfall, with an average of 139 mm (5.5 in) of precipitation. This rainfall is distributed across 15 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 26 mm (1 in) over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Riano 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 Riano
In Riano, 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 Riano by Month
The relative humidity is high throughout the year in Riano.
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 Riano
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, 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 mild winters
Frequently asked questions about the climate in Riano
What is the best time to visit Riano?
April, May, June and September typically offer the most optimal weather in Riano. In contrast, December tends to have less optimal conditions. Riano has a distinct dry season from July to August, with very warm summers and mild winters.
What temperatures can I expect in Riano?
Daytime highs range from 12°C (54°F) in January to 32°C (90°F) in August. Nighttime lows range from 3°C (37°F) to 20°C (68°F). Temperatures vary considerably through the year.
How much rain does Riano get?
Annual rainfall is around 965 mm (38 in). November is the wettest month with 139 mm (5.5 in), while July is the driest with 26 mm (1 in).
How sunny is Riano?
Riano 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, Riano enjoys abundant sunshine.
Riano 3-Day Forecast
Riano 3-Day Forecast
Riano on the map
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