Aci Castello Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Aci Castello.
Climate overview of Aci Castello
Temperatures in Aci Castello, Sicily, Italy, vary greatly throughout the year. August is the hottest month at 30°C (86°F), while January is the coldest at 15°C (59°F).
Aci Castello sees a moderate amount of rainfall, totalling around 702 mm (28 in) per year. It experiences a distinct dry season from May to August, with very warm summers and mild winters, creating some seasonal variation. The sunniest month is July, with 10.5 hours of sunshine per day on average.
Aci Castello Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Aci Castello - and find the best time to visit.
Monthly Temperature in Aci Castello
The climate in Aci Castello is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a very warm 30°C (86°F) in August, the warmest time of the year, to a moderate 15°C (59°F) during cooler months like January.
At night, you can expect temperatures ranging from 24°C (75°F) in August to around 8°C (46°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Aci Castello
Generally, Aci Castello receives mid-range precipitation levels, with 702 mm (28 in) annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, January it receives moderate rainfall, averaging 93 mm (3.7 in) of precipitation, recorded across 10 rainy days. In contrast, the driest month July brings less rainfall, with 9.9 mm (0.4 in) over a single rainy day. For more details, please visit our Aci Castello 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 Aci Castello
Seasonal changes in sunshine hours are quite dramatic in Aci Castello. While July receives considerable daily sunshine with up to 10.5 hours, January 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
Daily percentage of sunshine
Water Temperature in Aci Castello
The mean water temperature over the year ranges from 15°C (59°F) in January to 26°C (79°F) in August.
Water temperature over the year
Humidity in Aci Castello by Month
The relative humidity is high throughout the year in Aci Castello.
The city experiences its highest humidity in December, reaching 76%. In July, the humidity drops to its lowest level at 64%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Aci Castello
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, September, October and November
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: June, July and August
- Best for swimming: June, July, August, September, October and November.
- Seasonal pattern: A distinct dry season from May to August, with very warm summers and mild winters
Frequently asked questions about the climate in Aci Castello
What is the best time to visit Aci Castello?
May, June, September, October and November typically offer the most optimal weather in Aci Castello. In contrast, January, February, March and December tend to have less optimal conditions. Aci Castello has a distinct dry season from May to August, with very warm summers and mild winters.
What temperatures can I expect in Aci Castello?
Daytime highs range from 15°C (59°F) in January to 30°C (86°F) in August. Nighttime lows range from 8°C (46°F) to 24°C (75°F). Temperatures vary considerably through the year.
How much rain does Aci Castello get?
Annual rainfall is around 702 mm (28 in). January is the wettest month with 93 mm (3.7 in), while July is the driest with 9.9 mm (0.4 in).
How sunny is Aci Castello?
Aci Castello receives around 2,452 hours of sunshine per year. July is the sunniest month with 315 hours, while January is the cloudiest with just 111 hours. Overall, Aci Castello enjoys abundant sunshine.
Aci Castello 3-Day Forecast
Aci Castello on the map
Aci Castello 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.