Riyadh weather in September 2025

Expect daytime maximum temperatures of 40°C in Riyadh in September and very high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 40°C maximum daytime temperature in September in Riyadh40
    40°C max day temperature
  • 10 hours of sunshine per day
  • 0 days with some rainfall in September in Riyadh0
    0 days with some rainfall
  • 24°C minimum night-time temperature in September in Riyadh24
    24°C min night temperature
  • 12 hours of daylight per day in September in Riyadh12
    12 hours of daylight per day
  • Very high heat & humidity in September in RiyadhVH
    Very High heat & humidity
  • 0 mm monthly rainfall in September in Riyadh0
    0 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Riyadh11
    11 (Extreme) UV index

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The September weather guide for Saudi Arabia (Riyadh) 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Riyadh in September?

Daytime temperatures usually reach 40°C in Riyadh in September with very high heat and humidity, falling to 24°C at night.

How sunny is it in Riyadh in September?

There are normally 10 hours of bright sunshine each day in Riyadh in September - that's 84% of daylight hours.

Does it ever rain in Riyadh in September?

There are usually no days with some rain in Riyadh in September and the average monthly rainfall is 0mm.

Riyadh September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:34 18:12
Monday, 15th September 2025 05:39 17:57
Tuesday, 30th September 2025 05:45 17:41

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