Lajoux Weather in September

September in Lajoux sees daytime temperatures around 20°C (68°F) and lows of 10°C (50°F) at night. With around 140 mm (5.5 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Lajoux in September

Records from the past 30 years suggest around 13 days of rain, with 140 mm (5.5 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Lajoux in September

In September, expect pleasant temperatures in Lajoux, with highs of 20°C (68°F) and lows of 10°C (50°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 10°C (50°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Lajoux in September

The city usually sees around 183 hours of sunlight, indicating a moderately sunny period.

Average water temperature in September

At 20°C (68°F), the water is pleasant for swimming. Most people find this range ideal — cool enough to be refreshing, warm enough to stay in comfortably.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Lajoux.

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

Lajoux Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 20°C (68°F)  

Water Temperature 20°C (68°F) *  

Chance of Rain 42%  

Precipitation 140 mm (5.5 in)  

Rainy days 13 days  

Humidity 74% *  

Sunshine 183 hours *  

Percentage Sunshine 55% *  

* Data from: Geneva, Switzerland (22 KM, 14 Miles).

What to Wear in Lajoux in September

For Lajoux in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Expect water temperatures of around 20°C (68°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Lajoux in September

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

3/10

Outdoor sports

9/10

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 Lajoux's climate page.

More climate data for Lajoux

Temperature Rainfall Sunshine Humidity Water Temp

See the full Lajoux climate overview or explore weather in France.