As-Suwayda, Syria Climate
The warmest month is July, with an average high of 36°C; the coldest is January, with an average low of 3°C. A normal year brings 191 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 24
- Normal high
- 32°C
- Normal low
- 17°C
- Reanalysis high
- 39°Cin 2010
- Reanalysis low
- 13°Cin 1993
- Chance of a wet day
- 0%
- Daylight
- 12 h 05 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 13°C | 3°C | 25°C (2010) | -6°C (2015) | 47 mm | 9.3 |
| February | 15°C | 4°C | 27°C (2001) | -6°C (1992) | 40 mm | 8.5 |
| March | 19°C | 6°C | 33°C (2008) | -3°C (2012) | 25 mm | 6.2 |
| April | 24°C | 9°C | 38°C (2008) | -2°C (1997) | 9 mm | 3.0 |
| May | 30°C | 13°C | 40°C (2019) | 5°C (2005) | 3 mm | 0.0 |
| June | 34°C | 16°C | 43°C (2012) | 9°C (1991) | 0 mm | 0.0 |
| July | 36°C | 18°C | 45°C (2012) | 12°C (1992) | 0 mm | 0.0 |
| August | 36°C | 19°C | 45°C (2010) | 14°C (1992) | 0 mm | 0.0 |
| September | 33°C | 17°C | 43°C (2020) | 11°C (1992) | 0 mm | 0.0 |
| October | 29°C | 15°C | 38°C (2002) | 6°C (2013) | 6 mm | 3.1 |
| November | 21°C | 9°C | 31°C (2003) | -3°C (1992) | 21 mm | 6.0 |
| December | 15°C | 5°C | 27°C (2005) | -6°C (2004) | 40 mm | 6.2 |
| Year | 25°C | 11°C | 191 mm | 42 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
191 mm in a normal year, most in January.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around As-Suwayda.
Days with a mean dew point of 18°C or more are rare here in every month.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 2°C | 71% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | 2°C | 68% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | 3°C | 63% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 4°C | 53% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | 6°C | 45% | 99% | 1% | 0% | 0% | 0% | 0% |
| June | 8°C | 44% | 95% | 5% | 0% | 0% | 0% | 0% |
| July | 11°C | 47% | 74% | 25% | 1% | 0% | 0% | 0% |
| August | 12°C | 51% | 58% | 38% | 4% | 0% | 0% | 0% |
| September | 10°C | 50% | 76% | 23% | 1% | 0% | 0% | 0% |
| October | 7°C | 50% | 94% | 6% | 0% | 0% | 0% | 0% |
| November | 4°C | 56% | 100% | 0% | 0% | 0% | 0% | 0% |
| December | 2°C | 66% | 100% | 0% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is June, with the sky 14 percent covered on average; the cloudiest is January, at 52 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is January, averaging 16.6 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 20, with 14 h 19 min of daylight; the shortest is Dec 20, with 9 h 59 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in As-Suwayda in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.