Saudi Arabia Riyadh Weather in September — Climate Guide
September in Riyadh is moderate
Riyadh Weather in September — Quick Answer
As of 2026- Avg temp
- 41° / 24°
- Rainfall
- 0mm · 0 days
- Crowds
- Quiet
As of 2026, Riyadh in September averages a high of 41°C and low of 24°C with 0mm of rain over about 0 days. Still very hot — highs around 41°C, nights near 24°C. Light loose covering clothing and full sun protection. Heat starts to ease late in the month. Very dry.
September is moderate for Riyadh.
September is still firmly summer, with highs around 41°C, though the very end of the month hints at the coming relief. Nights ease slightly to about 24°C.
It remains very dry and rainless. Daytime outdoor activity is still uncomfortable, so plan around air-conditioning and after-dark hours much as in midsummer, easing into longer outdoor windows toward month's end.
Travel score
Riyadh September Weather Stats
Avg High
41°C
Avg Low
24°C
Rainy Days
0
0mm total
Sunshine
10.5h
Daily avg
Humidity
14%
dry
UV Index
9
Very high
Wind
13 km/h
Gusts 28
Crowds
Quiet
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
46 μg/m³
PM10
100 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
42°C
Nighttime
24°C
Humidity and wind affect how the actual temperature feels.
Wind
13 km/h
Max gust 28 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Saudi National Day celebrations (Sep 23)
- Low prices and crowds
- Heat easing by late September
- No rain disruption
Cons
- Still very hot most of the month (41°C)
- High UV (9)
- Daytime outdoor activity still tough
- Warm nights
September Events & Festivals
- Saudi National Day (Sep 23) — major celebrations
- Heat beginning to ease late September
- Still essentially no rain
Riyadh in September — Full Picture
September is still firmly summer, with highs around 41°C, though the very end of the month hints at the coming relief. Nights ease slightly to about 24°C.
It remains very dry and rainless. Daytime outdoor activity is still uncomfortable, so plan around air-conditioning and after-dark hours much as in midsummer, easing into longer outdoor windows toward month's end.
Saudi National Day (September 23) is the year's biggest national celebration, with fireworks, events, and the city draped in green — a lively time to be in Riyadh even if the days are hot.
Still low season for pricing and crowds. By late September, early mornings and evenings start to feel manageable for outdoor sights, a preview of the comfortable season ahead.
What to Wear & What to Pack
Still very hot — highs around 41°C, nights near 24°C. Light loose covering clothing and full sun protection. Heat starts to ease late in the month. Very dry.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
33.3°C
19.3°C
3.3/mo
Summer (Jun·Jul·Aug)
43.7°C
27.3°C
0/mo
Autumn (Sep·Oct·Nov)
Current34.7°C
19°C
1.3/mo
Winter (Dec·Jan·Feb)
22.3°C
10°C
3/mo
Riyadh Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 21° | 9° | 3d·12mm | 8.5h | 45% | 4 | Busy | Peak |
| February (Best) | 23° | 11° | 3d·12mm | 9h | 42% | 5 | Busy | Peak |
| 28° | 15° | 4d·22mm | 9h | 40% | 7 | Busy | Shoulder | |
| 33° | 19° | 5d·24mm | 9.5h | 35% | 9 | Moderate | Shoulder | |
| 39° | 24° | 1d·6mm | 10.5h | 22% | 11 | Quiet | Low season | |
| 43° | 27° | 0d·0mm | 11.5h | 12% | 11 | Quiet | Low season | |
| 44° | 28° | 0d·0mm | 11.5h | 10% | 11 | Quiet | Low season | |
| 44° | 27° | 0d·1mm | 11h | 12% | 11 | Quiet | Low season | |
| 41° | 24° | 0d·0mm | 10.5h | 14% | 9 | Quiet | Low season | |
| 35° | 19° | 1d·4mm | 10h | 25% | 7 | Moderate | Shoulder | |
| November (Best) | 28° | 14° | 3d·18mm | 8.5h | 40% | 5 | Busy | Peak |
| December (Best) | 23° | 10° | 3d·14mm | 8h | 45% | 4 | Busy | Peak |
View Other Months
Riyadh September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Riyadh?
Riyadh in September is moderate. Tourist crowds are quiet and flight/hotel prices are low season.
What's the average temperature in Riyadh in September?
Riyadh September averages a high of 41°C and a low of 24°C.
Does it rain much in Riyadh in September?
Riyadh September averages 0mm of rainfall over about 0 rainy days.
What should I wear in Riyadh in September?
Still very hot — highs around 41°C, nights near 24°C. Light loose covering clothing and full sun protection. Heat starts to ease late in the month. Very dry.
What time are sunrise and sunset in Riyadh in September?
Riyadh September sunrise is 05:25 and sunset is 18:00, with 12h 35min of daylight.
What's the air quality like in Riyadh in September?
Riyadh September air quality (AQI) averages 88, rated Moderate. PM2.5 averages 46μg/m³.
What activities are recommended in Riyadh in September?
In September, Riyadh is great for Saudi National Day events (Sep 23), Indoor National Museum, Edge of the World at sunset (late Sep).
Is September peak season in Riyadh?
Riyadh September crowds are quiet and prices are low season. You can travel relatively comfortably without long queues.
Best Months to Visit Riyadh
View Other Months
Planning a September trip to Riyadh?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.