Saint-Louis Weather in September
September in Saint-Louis typically sees daytime highs of 32°C (90°F) and nighttime lows of 27°C (81°F). Expect some rainfall during the month.
Rainfall in Saint-Louis in September
The climate data from previous years indicates about 6 days of rain, averaging 58 mm (2.3 in) for the month. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.
Temperature in Saint-Louis in September
September in Saint-Louis brings very high temperatures, with highs of 32°C (90°F) and nights around 27°C (81°F). Mornings and evenings are often more comfortable than the peak afternoon hours. At 27°C (81°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.
Sunshine in Saint-Louis in September
There are approximately 228 hours of sunshine this month, resulting in mostly clear days.
Wind Speed in Saint-Louis in September
In September, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Saint-Louis. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Senegal, check out our Saint-Louis's climate page.
Saint-Louis Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
32°C (90°F)
Chance of Rain
20%
Precipitation
58 mm (2.3 in)
Rainy days
6 days
Humidity
78%
Windspeed
4 m/s (8 knots)
Sunshine
228 hours
Percentage Sunshine
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Saint-Louis typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Historical weather for Saint-Louis in September
Browse day-by-day weather records for Saint-Louis spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Saint-Louis historical weather extremes in September
The extremes listed below come from historical weather data collected in Saint-Louis from 2004 through 2025.
- On September 21, 2017, temperatures climbed to 40°C (104°F), marking the warmest September day on record.
- On September 15, 2013, Saint-Louis saw its coldest September day with temperatures maxing out at 28°C (82°F).
- The coldest night in September in Saint-Louis was on September 5, 2017, with a minimum of 21°C (70°F).
Best Places in Senegal in September
Find out more about the weather in Senegal and which places have the best travel conditions in this month. See all of Senegal in September →
perfect weather
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What to Wear in Saint-Louis 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 Saint-Louis in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Senegal, check out our Saint-Louis's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Saint-Louis climate overview or explore weather in Senegal.
