Castellet Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Castellet.
Climate overview of Castellet
Castellet, Catalonia, Spain, experiences significant temperature variation throughout the year. Summers bring daytime highs of 29°C (84°F) in August, while winters cool to 14°C (57°F) in January.
The city receives around 650 mm (26 in) of rainfall per year. It experiences a distinct dry season from June to July, with warm summers and mild winters. September is the wettest month and July the driest. July is the sunniest month, averaging 10.4 hours of sunshine per day.
Castellet Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castellet - and find the best time to visit.
Monthly Temperature in Castellet
Depending on the time of the year, temperatures range from comfortable to moderate in Castellet. On average, daytime temperatures range from a comfortable 29°C (84°F) in August to a moderate 14°C (57°F) in January.
Nighttime temperatures range from 21°C (70°F) in August to 5°C (41°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Castellet
Generally, Castellet has a moderate amount of precipitation, averaging 650 mm (26 in) of rainfall annually. The seasons in Castellet bring significant changes in precipitation. The wettest month, September, receives moderate rainfall, with an average of 96 mm (3.8 in) of precipitation. This rainfall is distributed across 9 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 33 mm (1.3 in) over 6 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Castellet 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 Castellet
In Castellet, summer days are longer and more sunny, with daily sunshine hours peaking at 10.4 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.6 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Castellet by Month
The relative humidity is high throughout the year in Castellet.
The city experiences its highest humidity in September, reaching 74%. In July, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Castellet
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, July, August, September and October
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July
- Seasonal pattern: A distinct dry season from June to July, with warm summers and mild winters
Frequently asked questions about the climate in Castellet
What is the best time to visit Castellet?
May, June, July, August, September and October typically offer the most optimal weather in Castellet. In contrast, January, February, March and December tend to have less optimal conditions. Castellet has a distinct dry season from June to July, with warm summers and mild winters.
What temperatures can I expect in Castellet?
Daytime highs range from 14°C (57°F) in January to 29°C (84°F) in August. Nighttime lows range from 5°C (41°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Castellet get?
Annual rainfall is around 650 mm (26 in). September is the wettest month with 96 mm (3.8 in), while July is the driest with 33 mm (1.3 in).
How sunny is Castellet?
Castellet receives around 2,510 hours of sunshine per year. July is the sunniest month with 311 hours, while December is the cloudiest with just 137 hours. Overall, Castellet enjoys abundant sunshine.
Castellet 3-Day Forecast
Castellet on the map
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