Fos-sur-Mer Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Fos-sur-Mer.
Climate overview of Fos-sur-Mer
Fos-sur-Mer, Provence-Alpes-Côte d'Azur, France, experiences significant temperature variation throughout the year. Summers bring daytime highs of 31°C (88°F) in July, while winters cool to 13°C (55°F) in January.
Fos-sur-Mer sees a moderate amount of rainfall, totalling around 631 mm (25 in) per year. It experiences a distinct dry season from June to August, with very warm summers and mild winters, creating some seasonal variation. The most sunshine falls in July, with an average of 12.3 hours of daily sunshine.
Fos-sur-Mer Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Fos-sur-Mer - and find the best time to visit.
Monthly Temperature in Fos-sur-Mer
Depending on the time of the year, temperatures range from very warm to moderate in Fos-sur-Mer. Average maximum daytime temperatures range from a very warm 31°C (88°F) in July, the warmest time of the year, to a moderate 13°C (55°F) during cooler months like January.
At night, you can expect temperatures ranging from 21°C (70°F) in July to around 5°C (41°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Fos-sur-Mer
Generally, Fos-sur-Mer has a moderate amount of precipitation, averaging 631 mm (25 in) of rainfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, November it receives moderate rainfall, averaging 92 mm (3.6 in) of precipitation, recorded across 9 rainy days. In contrast, the driest month July brings less rainfall, with 14 mm (0.6 in) over 4 rainy days. For more details, please visit our Fos-sur-Mer 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 Fos-sur-Mer
Seasonal changes in sunshine hours are quite dramatic in Fos-sur-Mer. While July receives considerable daily sunshine with up to 12.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 4.5 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
Humidity in Fos-sur-Mer by Month
The relative humidity is high throughout the year in Fos-sur-Mer.
The city experiences its highest humidity in December, reaching 77%. In July, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Fos-sur-Mer
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, June, September and October
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July and August
- Seasonal pattern: A distinct dry season from June to August, with very warm summers and mild winters
Frequently asked questions about the climate in Fos-sur-Mer
What is the best time to visit Fos-sur-Mer?
April, May, June, September and October typically offer the most optimal weather in Fos-sur-Mer. In contrast, January and December tend to have less optimal conditions. Fos-sur-Mer has a distinct dry season from June to August, with very warm summers and mild winters.
What temperatures can I expect in Fos-sur-Mer?
Daytime highs range from 13°C (55°F) in January to 31°C (88°F) in July. Nighttime lows range from 5°C (41°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Fos-sur-Mer get?
Annual rainfall is around 631 mm (25 in). November is the wettest month with 92 mm (3.6 in), while July is the driest with 14 mm (0.6 in).
How sunny is Fos-sur-Mer?
Fos-sur-Mer receives around 2,872 hours of sunshine per year. July is the sunniest month with 370 hours, while December is the cloudiest with just 136 hours. Overall, Fos-sur-Mer enjoys abundant sunshine.
Fos-sur-Mer 3-Day Forecast
Fos-sur-Mer 3-Day Forecast
Fos-sur-Mer on the map
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