Riyadh weather in September
September is very hot in Riyadh, with afternoons above 35°C — plan outdoor activity for early morning or after sunset. Rain is virtually absent this month.
September climate normals for Riyadh
Avg high
40°C
Avg low
26°C
Rain days
0
Humidity
15%
Riyadh climate through the year
Normals computed from Open-Meteo's ERA5 reanalysis archive (2015–2024).