Grotte di Castro Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Grotte di Castro.
Climate overview of Grotte di Castro
The climate in Grotte di Castro, Lazio, Italy, is marked by large temperature swings across the seasons, ranging from 30°C (86°F) in August to 10°C (50°F) in January.
The city receives around 986 mm (39 in) of rain/snowfall per year. It experiences very warm summers and cold winters. November is the wettest month and July the driest. Sunshine peaks in July, when the city sees around 9.5 hours of sunshine per day.
Grotte di Castro Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Grotte di Castro - and find the best time to visit.
Monthly Temperature in Grotte di Castro
In Grotte di Castro, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a very warm 30°C (86°F) in August to a chilly 10°C (50°F) in January.
Nighttime temperatures range from 19°C (66°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 Grotte di Castro
On average, Grotte di Castro receives a reasonable amount of rain/snowfall, with an annual precipitation of 986 mm (39 in). The seasons in Grotte di Castro bring significant changes in precipitation. The wettest month, November, receives high rainfall, with an average of 133 mm (5.2 in) of precipitation. This rainfall is distributed across 15 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 37 mm (1.5 in) over 6 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Grotte di Castro 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 Grotte di Castro
In Grotte di Castro, summer days are longer and more sunny, with daily sunshine hours peaking at 9.5 hours in July. As the darker season arrives, the brightness of the sun becomes less. November sees a soft sun for only 3.1 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Grotte di Castro by Month
The relative humidity is high throughout the year in Grotte di Castro.
The city experiences its highest humidity in December, reaching 85%. In July, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Grotte di Castro
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: Very warm summers and cold winters
Frequently asked questions about the climate in Grotte di Castro
What is the best time to visit Grotte di Castro?
May, June and September typically offer the most optimal weather in Grotte di Castro. In contrast, January tends to have less optimal conditions. Grotte di Castro has very warm summers and cold winters.
What temperatures can I expect in Grotte di Castro?
Daytime highs range from 10°C (50°F) in January to 30°C (86°F) in August. Nighttime lows range from 3°C (37°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Grotte di Castro get?
Annual rainfall is around 986 mm (39 in). November is the wettest month with 133 mm (5.2 in), while July is the driest with 37 mm (1.5 in).
How sunny is Grotte di Castro?
Grotte di Castro receives around 2,007 hours of sunshine per year. July is the sunniest month with 286 hours, while November is the cloudiest with just 92 hours. Overall, Grotte di Castro enjoys abundant sunshine.
Grotte di Castro 3-Day Forecast
Grotte di Castro on the map
Grotte di Castro is highlighted - select any city to see its climate.
Popular this month
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 10 most beautiful historical towns in Italy
Discover Italy's top 10 historic towns, featuring breathtaking medieval architecture and deep-rooted history, ideal for enthusiasts of extraordinary cities.
Experience mystical Assisi
Assisi is the most famous town in Umbria and best known because of Saints Francis and Clare of Assisi. Many visitors come to see the breathtaking San Francesco basilica.
The Battle of Oranges
This is one of the most unusual festivals in Italy. The festival is held in the middle of winter during the winter carnival. The entire city of Ivrea near Turin turns into a battlefield.
The most beautiful fishing village of Italy
Portofino is the most beautiful fishing village in Italy and maybe even in the world. We absolutely recommend that you add this beautiful place to your bucket list.