Saint-Louis weather in September 2025

Expect 90°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Saint-Louis in September. Check more long-term weather averages for Saint-Louis in September before you book your next holiday to Senegal in 2025/2026.

  • 90°F maximum daytime temperature in September in Saint-Louis90
    90°F max day temperature
  • 8 hours of sunshine per day
  • 6 days with some rainfall in September in Saint-Louis6
    6 days with some rainfall
  • 77°F minimum night-time temperature in September in Saint-Louis77
    77°F min night temperature
  • 12 hours of daylight per day in September in Saint-Louis12
    12 hours of daylight per day
  • Very high heat & humidity in September in Saint-LouisVH
    Very High heat & humidity
  • 3.7 inches monthly rainfall in September in Saint-Louis3.7
    3.7 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Saint-Louis11
    11+ (Extreme) UV index
  • 82°F sea temperature in September in Saint-Louis82
    82°F sea temperature

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The September weather guide for Senegal (Saint-Louis) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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More about Senegal

How hot is it in Saint-Louis in September?

Daytime temperatures usually reach 90°F in Saint-Louis in September with very high heat and humidity, falling to 77°F at night.

How sunny is it in Saint-Louis in September?

There are normally 8 hours of bright sunshine each day in Saint-Louis in September - that's 62% of daylight hours.

How warm is the sea around Saint-Louis in September?

The average sea temperature around Saint-Louis in September is 82°F.

Does it ever rain in Saint-Louis in September?

There are usually 6 days with some rain in Saint-Louis in September and the average monthly rainfall is 3.7 inches.

Saint-Louis September sunrise & sunset times

Browse the sunrise and sunset times for Saint-Louis in September 2025. Select a month to view Saint-Louis sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:53 19:18
Monday, 15th September 2025 06:54 19:08
Tuesday, 30th September 2025 06:56 18:56

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