Riyadh Region weather in September
September is one of the least pleasant months in Riyadh Region: highs of 40°C (104°F) and about 0 mm (0.0 in) of rain on average. Nights average 25°C (76°F) and cloud cover 15% (NASA POWER, 2001–2025 averages). It is the 2nd driest month of the year and the 4th warmest. Compared with August, it is cooler and about as wet; October brings highs of 35°C (94°F) and 0 mm (0.0 in) of rain.
Figures are long-term averages for Riyadh, the largest city in Riyadh Region. See below for other places.
Is September a good time to visit Riyadh Region?
least pleasant month Weather score 60/100.
September is one of the least pleasant months for weather in Riyadh Region. For better conditions, consider Oct–Mar.
Does it rain a lot in Riyadh Region in September?
No, it is usually dry: about 0 mm (0.0 in) falls in an average September. It is the 2nd driest month of the year.
How warm is Riyadh Region in September?
Days average 40°C (104°F) and nights 25°C (76°F).
Riyadh Region weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 21°C (70°F) | 7°C (44°F) | 6 mm | 24% | best |
| February | 24°C (76°F) | 9°C (48°F) | 4 mm | 25% | best |
| March | 29°C (84°F) | 13°C (56°F) | 2 mm | 30% | best |
| April | 34°C (94°F) | 19°C (66°F) | 5 mm | 40% | fair |
| May | 40°C (104°F) | 24°C (75°F) | 1 mm | 28% | least pleasant |
| June | 43°C (109°F) | 26°C (79°F) | 0 mm | 14% | least pleasant |
| July | 44°C (111°F) | 28°C (82°F) | 0 mm | 21% | least pleasant |
| August | 44°C (110°F) | 28°C (82°F) | 0 mm | 21% | least pleasant |
| September | 40°C (104°F) | 25°C (76°F) | 0 mm | 15% | least pleasant |
| October | 35°C (94°F) | 20°C (67°F) | 0 mm | 11% | best |
| November | 27°C (81°F) | 14°C (57°F) | 7 mm | 22% | best |
| December | 22°C (71°F) | 8°C (47°F) | 6 mm | 22% | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Riyadh Region in September
Weather can differ a lot within Riyadh Region: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Riyadh | 40°C (104°F) | 25°C (76°F) | 0 mm | least pleasant |
| Al Kharj | 41°C (106°F) | 25°C (77°F) | 0 mm | least pleasant |
| Az Zulfī | 40°C (104°F) | 24°C (75°F) | 0 mm | least pleasant |
| Ad Dawādimī | 39°C (102°F) | 23°C (74°F) | 0 mm | least pleasant |
| Ad Dir‘īyah | 39°C (103°F) | 24°C (74°F) | 0 mm | least pleasant |
| Afif | 39°C (102°F) | 23°C (74°F) | 0 mm | least pleasant |
| ‘Irqah | 40°C (104°F) | 25°C (76°F) | 0 mm | least pleasant |
| Ad Dilam | 40°C (103°F) | 24°C (76°F) | 0 mm | least pleasant |
| Shaqra | 40°C (103°F) | 24°C (75°F) | 0 mm | least pleasant |
| Ḥawṭah Banī Tamīm | 40°C (103°F) | 25°C (76°F) | 0 mm | least pleasant |
| Laylá | 40°C (104°F) | 25°C (77°F) | 0 mm | least pleasant |
| Rumāḩ | 40°C (104°F) | 24°C (76°F) | 0 mm | least pleasant |