Grottaferrata Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Grottaferrata.
Climate overview of Grottaferrata
Temperatures in Grottaferrata, Lazio, Italy, vary greatly throughout the year. August is the hottest month at 31°C (88°F), while January is the coldest at 13°C (55°F).
Rainfall is high, totalling around 1014 mm (40 in) per year. November is the wettest month and July the driest. The city also experiences a distinct dry season from July to August, with very warm summers and mild winters. The sunniest month is July, with 11.1 hours of sunshine per day on average.
Grottaferrata Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Grottaferrata - and find the best time to visit.
Monthly Temperature in Grottaferrata
The climate in Grottaferrata is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a very warm 31°C (88°F) in August, the warmest time of the year, to a moderate 13°C (55°F) during cooler months like January.
At night, you can expect temperatures ranging from 20°C (68°F) in August to around 4°C (39°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Grottaferrata
Grottaferrata has a notably wet climate with abundant precipitation, recording 1014 mm (40 in) of rainfall per year. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, November it receives high rainfall, averaging 149 mm (5.9 in) of precipitation, recorded across 15 rainy days. In contrast, the driest month July brings less rainfall, with 28 mm (1.1 in) over 5 rainy days. For more details, please visit our Grottaferrata 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 Grottaferrata
Seasonal changes in sunshine hours are quite dramatic in Grottaferrata. While July receives considerable daily sunshine with up to 11.1 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Grottaferrata by Month
The relative humidity is high throughout the year in Grottaferrata.
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 Grottaferrata
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 mild winters
Frequently asked questions about the climate in Grottaferrata
What is the best time to visit Grottaferrata?
May, June and September typically offer the most optimal weather in Grottaferrata. In contrast, December tends to have less optimal conditions. Grottaferrata has a distinct dry season from July to August, with very warm summers and mild winters.
What temperatures can I expect in Grottaferrata?
Daytime highs range from 13°C (55°F) in January to 31°C (88°F) in August. Nighttime lows range from 4°C (39°F) to 20°C (68°F). Temperatures vary considerably through the year.
How much rain does Grottaferrata get?
Annual rainfall is around 1014 mm (40 in). November is the wettest month with 149 mm (5.9 in), while July is the driest with 28 mm (1.1 in).
How sunny is Grottaferrata?
Grottaferrata 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, Grottaferrata enjoys abundant sunshine.
Grottaferrata 3-Day Forecast
Grottaferrata 3-Day Forecast
Grottaferrata on the map
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