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Cast Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Cast.
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Climate overview of Cast
Temperatures in Cast, Brittany, France, shift moderately through the seasons. The warmest month is August at 21°C (70°F), and the coolest is January at 11°C (52°F).
The city receives considerable rainfall, with around 1071 mm (42 in) annually. December is the wettest month. It has pleasant summers and cold winters. July is the sunniest month, averaging 7.6 hours of sunshine per day.
Cast Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cast - and find the best time to visit.
Monthly Temperature in Cast
The climate in Cast experiences moderate temperature changes, with mild shifts between seasons. Typically, average maximum daytime temperatures range from a pleasant 21°C (70°F) in August to a chilly 11°C (52°F) in the coolest month, January.
Nights vary from 14°C (57°F) in August to around 5°C (41°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Cast
Cast has a notably wet climate with abundant precipitation, recording 1071 mm (42 in) of rainfall per year. The climate in Cast shows significant variation throughout the year. Expect high rainfall in December, the wettest month, with an average of 132 mm (5.2 in) of precipitation over 21 rainy days.
In contrast, the driest month July offers drier and sunnier days, with around 58 mm (2.3 in) of rainfall over 13 rainy days. For more details, please visit our Cast 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 Cast
For those who appreciate different seasons, Cast serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 7.6 hours of sunshine daily, and embrace the darker days in December, offering only 2.1 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Brest, France (38 KM, 23 Miles).
Daily hours of sunshine
Data from: Brest, France (38 KM, 23 Miles).
Daily percentage of sunshine
Data from: Brest, France (38 KM, 23 Miles).
Humidity in Cast by Month
The city experiences its highest humidity in January, reaching 86%. In April, the humidity drops to its lowest level at 81%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Brest, France (38 KM, 23 Miles).
Best Time to Visit Cast
The most comfortable overall weather for exploring Cast is usually found in July, August and September. Conditions are generally least comfortable in January, February and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
wet
Feb
wet
Mar
mixed
Apr
good
May
good
Jun
very good
Jul
excellent
Aug
excellent
Sep
excellent
Oct
mixed
Nov
mixed
Dec
wet
- Best overall: July, August and September
- Warmest weather: July, August and September
- Most sunshine: July
- Fewest rainy days: June, July, August and September
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Cast
What is the best time to visit Cast?
July, August and September typically offer the most optimal weather in Cast. In contrast, January, February and December tend to have less optimal conditions. Cast has pleasant summers and cold winters.
What temperatures can I expect in Cast?
Daytime highs range from 11°C (52°F) in January to 21°C (70°F) in August. Nighttime lows range from 5°C (41°F) to 14°C (57°F).
How much rain does Cast get?
Annual rainfall is around 1071 mm (42 in). December is the wettest month with 132 mm (5.2 in), while July is the driest with 58 mm (2.3 in).
How sunny is Cast?
Cast receives around 1,752 hours of sunshine per year. July is the sunniest month with 229 hours, while December is the cloudiest with just 63 hours.
Cast 3-Day Forecast
Cast on the map
Cast is highlighted - select any city to see its climate.
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