Challans Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Challans.
Climate overview of Challans
Challans, Pays de la Loire, France, sees big temperature differences between seasons, with August peaking at 25°C (77°F) and January dropping to 11°C (52°F).
The city receives around 776 mm (31 in) of rainfall per year. It experiences warm summers and cold winters. December is the wettest month and July the driest. The sunniest month is August, with 7.6 hours of sunshine per day on average.
Challans Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Challans - and find the best time to visit.
Monthly Temperature in Challans
Visitors to Challans can expect significant temperature changes throughout the year. On average, daytime temperatures range from a comfortable 25°C (77°F) in August to a chilly 11°C (52°F) in January.
Nighttime temperatures range from 16°C (61°F) in August to 4°C (39°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Challans
Generally, Challans experiences moderate precipitation patterns, averaging 776 mm (31 in) yearly. The amount of precipitation varies moderately throughout the year. The wettest month, December, sees around 87 mm (3.4 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, July, still receives a respectable 45 mm (1.8 in) of rainfall. For more details, please visit our Challans 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 Challans
In Challans, summer days are longer and more sunny, with daily sunshine hours peaking at 7.6 hours in August. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 2.4 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 Challans by Month
The city experiences its highest humidity in December, reaching 89%. In July, the humidity drops to its lowest level at 75%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Challans
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 and September
- Warmest weather: July and August
- Most sunshine: August
- Fewest rainy days: June, July, August and September
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Challans
What is the best time to visit Challans?
May, June, July, August and September typically offer the most optimal weather in Challans. In contrast, January, February and December tend to have less optimal conditions. Challans has warm summers and cold winters.
What temperatures can I expect in Challans?
Daytime highs range from 11°C (52°F) in January to 25°C (77°F) in August. Nighttime lows range from 4°C (39°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Challans get?
Annual rainfall is around 776 mm (31 in). December is the wettest month with 87 mm (3.4 in), while July is the driest with 45 mm (1.8 in).
How sunny is Challans?
Challans receives around 1,797 hours of sunshine per year. August is the sunniest month with 228 hours, while January is the cloudiest with just 73 hours.
Challans 3-Day Forecast
Challans on the map
Challans is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Marseille
32°C (90°F) Toulouse
29°C (84°F) Bordeaux29°C (84°F) Lyon28°C (82°F) Cannes27°C (81°F) Nice27°C (81°F) Paris26°C (79°F) Chamonix-Mont-Blanc
18°C (64°F) 
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