Mers-les-Bains Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Mers-les-Bains.
Climate overview of Mers-les-Bains
Temperatures in Mers-les-Bains, Picardy, France, vary greatly throughout the year. August is the hottest month at 22°C (72°F), while January is the coldest at 9°C (48°F).
Mers-les-Bains sees a moderate amount of rainfall, totalling around 957 mm (38 in) per year. It experiences warm summers and cold winters, creating some seasonal variation. July is the sunniest month, averaging 7.3 hours of sunshine per day.
Mers-les-Bains Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mers-les-Bains - and find the best time to visit.
Monthly Temperature in Mers-les-Bains
The climate in Mers-les-Bains is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 22°C (72°F) in August, the warmest time of the year, to a chilly 9°C (48°F) during cooler months like January.
At night, you can expect temperatures ranging from 15°C (59°F) in August to around 3°C (37°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Mers-les-Bains
Generally, Mers-les-Bains receives mid-range precipitation levels, with 957 mm (38 in) annually. While rainfall varies throughout the year, each season offers its own charm. December brings wetter days averaging 107 mm (4.2 in) of precipitation, spread over 17 rainy days.
In contrast, the driest month April experiences a drier climate, with about 65 mm (2.6 in) of rainfall spread across 15 rainy days. For more details, please visit our Mers-les-Bains 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 Mers-les-Bains
Seasonal changes in sunshine hours are quite dramatic in Mers-les-Bains. While July receives considerable daily sunshine with up to 7.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.8 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Mers-les-Bains by Month
The city experiences its highest humidity in November, reaching 89%. In April, the humidity drops to its lowest level at 82%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Mers-les-Bains
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: June, July and August
- Fewer rainy days: February, June, July, August and September
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Mers-les-Bains
What is the best time to visit Mers-les-Bains?
June, July, August and September typically offer the most optimal weather in Mers-les-Bains. In contrast, January, February, November and December tend to have less optimal conditions. Mers-les-Bains has warm summers and cold winters.
What temperatures can I expect in Mers-les-Bains?
Daytime highs range from 9°C (48°F) in January to 22°C (72°F) in August. Nighttime lows range from 3°C (37°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Mers-les-Bains get?
Annual rainfall is around 957 mm (38 in). December is the wettest month with 107 mm (4.2 in), while April is the driest with 65 mm (2.6 in).
How sunny is Mers-les-Bains?
Mers-les-Bains receives around 1,687 hours of sunshine per year. July is the sunniest month with 218 hours, while December is the cloudiest with just 55 hours.
Mers-les-Bains 3-Day Forecast
Mers-les-Bains 3-Day Forecast
Mers-les-Bains on the map
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