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The average temperature in As Sulayyil over the whole year is 28°C. July is the hottest month, with highs of about 42°C; January is the coldest, with lows of about 12°C. The rainy (wet) season in As Sulayyil runs from March to May, peaking in April with a 53% chance of rain on a given day. The dry season is December to February; December is the driest month, at 18%. Winds in As Sulayyil are highest in February, averaging 4.7 m/s (17 km/h), and lightest in September, at 3.2 m/s (12 km/h). The prevailing wind is from the E. The clearest skies in As Sulayyil come in June, when the sky is typically 11% covered; April is the cloudiest month, at 29%.
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 22°C | 12°C | 18°C | 23% | 17% | 4.3 m/s | 65 | 10 | 72 |
| February | 25°C | 15°C | 20°C | 30% | 19% | 4.7 m/s | 66 | 22 | 59 |
| March | 30°C | 19°C | 26°C | 41% | 22% | 4.6 m/s | 54 | 50 | 28 |
| April | 33°C | 23°C | 30°C | 53% | 29% | 4.3 m/s | 21 | 54 | 7 |
| May | 38°C | 26°C | 35°C | 45% | 21% | 3.7 m/s | 2 | 25 | 0 |
| June | 41°C | 28°C | 38°C | 32% | 11% | 3.3 m/s | 0 | 4 | 0 |
| July | 42°C | 30°C | 39°C | 49% | 22% | 3.7 m/s | 0 | 3 | 0 |
| August | 41°C | 30°C | 40°C | 30% | 23% | 3.5 m/s | 0 | 1 | 0 |
| September | 39°C | 26°C | 37°C | 37% | 14% | 3.2 m/s | 0 | 8 | 0 |
| October | 34°C | 21°C | 31°C | 52% | 12% | 3.3 m/s | 13 | 64 | 1 |
| November | 28°C | 17°C | 25°C | 40% | 22% | 4.0 m/s | 65 | 58 | 25 |
| December | 24°C | 13°C | 20°C | 18% | 14% | 4.0 m/s | 78 | 15 | 68 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Year round, As Sulayyil has days of about 22°C at their warmest in January, its coolest month, and 42°C in July, its warmest; the coolest hours of the day run from 12°C to 30°C through the year, and the average temperature over the year is 28°C around the clock. Rain is most likely around April and least likely around December. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Winter in As Sulayyil has typical daily highs of about 24°C and lows of about 13°C, with a 24% chance of rain on a given day.
Spring in As Sulayyil has typical daily highs of about 34°C and lows of about 23°C, with a 46% chance of rain on a given day.
Summer in As Sulayyil has typical daily highs of about 41°C and lows of about 29°C, with a 37% chance of rain on a given day.
Autumn in As Sulayyil has typical daily highs of about 34°C and lows of about 22°C, with a 43% chance of rain on a given day.
The rainy (wet) season in As Sulayyil runs from March to May, peaking in April with a 53% chance of rain on a given day. The dry season is December to February; December is the driest month, at 18%.
Winds in As Sulayyil are highest in February, averaging 4.7 m/s (17 km/h), and lightest in September, at 3.2 m/s (12 km/h). The prevailing wind is from the E.
The average temperature in As Sulayyil over the whole year is 28°C. July is the hottest month, with highs of about 42°C; January is the coldest, with lows of about 12°C.