Ar Riyāḑ has a warm subtropical climate with warm summers and mild winters.
Ar Riyāḑ has an average annual temperature of 25.7°C across all 14 cities, with approximately 46 mm of annual precipitation and average humidity of 25%. Temperatures peak in July and drop to their lowest in January, while rainfall is highest during spring and early summer months.
The warmest city is Al Kharj with average July highs of 46.8°C, while Az Zulfī is the coldest with average January lows of 0.0°C. Humidity remains relatively low throughout the year, especially during winter months, creating warm and dry conditions. These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
| Month | 🌤️ | High | Low | Avg | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|
| January | 🌤️ | 27.9°C | 1.3°C | 14.6°C | 43% | 8 | 2.9 | 4.30 |
| February | ☀️ | 31.1°C | 3.0°C | 17.0°C | 36% | 6 | 3.1 | 5.20 |
| March | ☀️ | 35.1°C | 6.8°C | 21.0°C | 31% | 9 | 3.3 | 6.10 |
| April | 😎 | 38.9°C | 12.4°C | 25.7°C | 27% | 7 | 3.2 | 6.70 |
| May | 🥵 | 43.1°C | 18.5°C | 30.8°C | 18% | 2 | 3.0 | 7.30 |
| June | 🥵 | 44.6°C | 22.6°C | 33.6°C | 12% | 0 | 3.1 | 7.90 |
| July | 🥵 | 45.4°C | 24.4°C | 34.9°C | 12% | 0 | 3.1 | 7.80 |
| August | 🥵 | 45.1°C | 24.3°C | 34.7°C | 14% | 1 | 2.9 | 7.30 |
| September | 🥵 | 43.0°C | 20.8°C | 31.9°C | 15% | 0 | 2.6 | 6.70 |
| October | 😎 | 38.4°C | 15.9°C | 27.2°C | 20% | 1 | 2.6 | 5.70 |
| November | ☀️ | 32.5°C | 8.9°C | 20.7°C | 35% | 7 | 2.8 | 4.50 |
| December | ☀️ | 28.1°C | 3.4°C | 15.8°C | 44% | 7 | 2.8 | 4.00 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 14 cities in Ar Riyāḑ
🧥 Light layers are sufficient — this Mild Winter stays cool without prolonged hard freezes.
🌤️ Limit midday outdoor exposure and stay hydrated — this is an intense Hot Summer.
☔ Rainfall is spread across the year with no sharply defined wet season.
Region-wide monthly averages across 14 cities · 1981–2025 · °C
Temperatures rise steadily from spring, peak in July, and gradually decline through autumn into winter.
These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
Region-wide monthly rainfall · 1981–2025 · mm/month
Monthly averages · 1981–2025
💧 Humidity peaks at 44% in December · annual avg 25%
The warmest year on record was 2021 (avg: 26.7°C), while the coldest year was 1992 (avg: 23.7°C).
Averaged across all 14 cities in Ar Riyāḑ · Last 10 years · °C
Averaged across all 14 cities in Ar Riyāḑ · Last 10 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 14 cities in Ar Riyāḑ for each year.
| Year | Min Temp | Avg Temp | Max Temp | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|
2025 | 13.8°C | 25.7°C | 37.6°C | 104 | 26% | 2.8 m/s |
2024 | 14.4°C | 26.5°C | 38.6°C | 102 | 29% | 3.1 m/s |
2023 🌧️ | 14.8°C | 26.3°C | 37.8°C | 153 | 32% | 2.9 m/s |
2022 | 14.1°C | 26.4°C | 38.6°C | 59 | 24% | 3.0 m/s |
2021 | 14.7°C | 26.7°C | 38.6°C | 23 | 23% | 2.9 m/s |
2020 | 13.8°C | 26.1°C | 38.4°C | 39 | 25% | 3.0 m/s |
2019 | 14.1°C | 26.4°C | 38.6°C | 14 | 26% | 3.0 m/s |
2018 | 14.9°C | 26.6°C | 38.2°C | 32 | 26% | 3.0 m/s |
2017 | 14.0°C | 26.0°C | 37.9°C | 18 | 24% | 2.9 m/s |
2016 | 13.7°C | 26.0°C | 38.3°C | 54 | 25% | 2.8 m/s |
Showing 1 to 10 of 45 years
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.
