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Saint-Jean-de-Luz Weather in September
September in Saint-Jean-de-Luz brings high temperatures, with daytime highs of 23°C (73°F) and nights around 15°C (59°F). Quite a bit of rainfall is expected, around 102 mm (4 in), so pack an umbrella.
Rainfall in Saint-Jean-de-Luz in September
Historically, September sees about 13 days of rain, with a monthly average of 102 mm (4 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Saint-Jean-de-Luz in September
September in Saint-Jean-de-Luz sees highs of 23°C (73°F) and lows of 15°C (59°F) overnight. This month falls in the summer season. This kind of day-to-night contrast is typical for this time of year. At 15°C (59°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Saint-Jean-de-Luz in September
The city usually sees around 193 hours of sunlight, indicating many sunny days , a great month for sightseeing.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for Saint-Jean-de-Luz.
Saint-Jean-de-Luz Temperature in September
Min Temperature
15°C (59°F)
Max Temperature
23°C (73°F)
Chance of Rain
42%
Precipitation
102 mm (4 in)
Rainy days
13 days
Humidity
80% *
Sunshine
193 hours *
Percentage Sunshine
*
* Data from: Biarritz, France (13 KM, 8 Miles).
Saint-Jean-de-Luz Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint-Jean-de-Luz - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Saint-Jean-de-Luz typically stay consistent throughout September, with daily highs averaging around 23°C (73°F). Nights are pleasant, with lows typically ranging from 13°C (55°F) to 16°C (61°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Saint-Jean-de-Luz in September
Browse day-by-day weather records for Saint-Jean-de-Luz spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Saint-Jean-de-Luz historical weather extremes in September
Based on 49 years of weather observations in Saint-Jean-de-Luz between 1976 and 2025, these are the recorded extremes.
- On September 12, 2016, temperatures climbed to 37°C (99°F), marking the warmest September day on record.
- The coldest September day was on September 23, 1994, with a maximum of 15°C (59°F).
- The lowest overnight temperature recorded in September was 6°C (43°F) (September 26, 2002).
Best Places in France in September
Find out more about the weather in France and which places have the best travel conditions in this month. See all of France in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Saint-Jean-de-Luz in September
For Saint-Jean-de-Luz 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Saint-Jean-de-Luz in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping6/10 -
Outdoor sports9/10
Saint-Jean-de-Luz 3-Day Forecast
More climate data for Saint-Jean-de-Luz
Temperature Rainfall Sunshine Humidity
See the full Saint-Jean-de-Luz climate overview or explore weather in France.
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Where to go in September - average daytime high across popular destinations.
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The 10 most charming villages in France
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