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Castel di Decima Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Castel di Decima.
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10-day forecastForecast
Climate overview of Castel di Decima
The climate in Castel di Decima, Lazio, Italy, is marked by large temperature swings across the seasons, ranging from 30°C (86°F) in August to 13°C (55°F) in January.
The city receives around 946 mm (37 in) of rainfall per year. It experiences a distinct dry season from June to August, with warm summers and mild 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.
Castel di Decima Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castel di Decima - and find the best time to visit.
Monthly Temperature in Castel di Decima
In Castel di Decima, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 30°C (86°F) in August to a moderate 13°C (55°F) in January.
Nighttime temperatures range from 22°C (72°F) in August to 7°C (45°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Castel di Decima
On average, Castel di Decima receives a reasonable amount of rainfall, with an annual precipitation of 946 mm (37 in). The seasons in Castel di Decima bring significant changes in precipitation. The wettest month, November, receives high rainfall, with an average of 156 mm (6.1 in) of precipitation. This rainfall is distributed across 15 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 19 mm (0.7 in) over 4 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Castel di Decima 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 Castel di Decima
In Castel di Decima, 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
Data from: Rome, Italy (17 KM, 10 Miles).
Daily hours of sunshine
Data from: Rome, Italy (17 KM, 10 Miles).
Humidity in Castel di Decima by Month
The relative humidity is high throughout the year in Castel di Decima.
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
Data from: Rome, Italy (17 KM, 10 Miles).
Wind Speed in Castel di Decima
The average wind speed over the year ranges from 3 m/s (6 knots) to 4 m/s (8 knots). It is lower in August and higher in December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Data from: Rome, Italy (17 KM, 10 Miles).
Best Time to Visit Castel di Decima
For comfortable weather, consider visiting Castel di Decima in May, June, July and September. Conditions are usually least favourable in January and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
mixed
Feb
good
Mar
good
Apr
very good
May
excellent
Jun
excellent
Jul
excellent
Aug
very good
Sep
excellent
Oct
very good
Nov
good
Dec
mixed
- Best overall: May, June, July and September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July and August
- Wettest months: January, February, September, October, November and December, when rainfall is highest.
- Seasonal pattern: A distinct dry season from June to August, with warm summers and mild winters
Frequently asked questions about the climate in Castel di Decima
What is the best time to visit Castel di Decima?
May, June, July and September typically offer the most optimal weather in Castel di Decima. In contrast, January and December tend to have less optimal conditions. Castel di Decima has a distinct dry season from June to August, with warm summers and mild winters.
What temperatures can I expect in Castel di Decima?
Daytime highs range from 13°C (55°F) in January to 30°C (86°F) in August. Nighttime lows range from 7°C (45°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Castel di Decima get?
Annual rainfall is around 946 mm (37 in). November is the wettest month with 156 mm (6.1 in), while July is the driest with 19 mm (0.7 in).
How sunny is Castel di Decima?
Castel di Decima 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, Castel di Decima enjoys abundant sunshine.
Castel di Decima 3-Day Forecast
Castel di Decima on the map
Castel di Decima is highlighted - select any city to see its climate.
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