Fos-sur-Mer Weather in September

September in Fos-sur-Mer sees daytime temperatures around 26°C (79°F) and lows of 17°C (63°F) at night. With around 78 mm (3.1 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Fos-sur-Mer in September

Records from the past 30 years suggest around 7 days of rain, with 78 mm (3.1 in) average for the month. Although rain is not especially frequent, individual showers can still be quite heavy.

Temperature in Fos-sur-Mer in September

Weather in Fos-sur-Mer is at its excellent in September. Highs reach 26°C (79°F), while nights settle around 17°C (63°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Fos-sur-Mer in September

The days are predominantly sunny, with an estimated total of around 260 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, June, September and October typically offer the best weather for Fos-sur-Mer.

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For a detailed overview over the year and the best time to visit France, check out our Fos-sur-Mer's climate page.

Fos-sur-Mer Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 22%  

Precipitation 78 mm (3.1 in)  

Rainy days 7 days  

Humidity 70% *  

Sunshine 260 hours *  

Percentage Sunshine 68% *  

* Data from: Marseille, France (18 KM, 11 Miles).

What to Wear in Fos-sur-Mer in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Rain gear is recommended, you can expect wet weather on multiple days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Fos-sur-Mer in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit France, check out our Fos-sur-Mer's climate page.

More climate data for Fos-sur-Mer

Temperature Rainfall Sunshine Humidity

See the full Fos-sur-Mer climate overview or explore weather in France.