Ad Dilam, Saudi Arabia Climate
The warmest month is July, with an average high of 43°C; the coldest is January, with an average low of 8°C. A normal year brings 30 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 25
- Normal high
- 39°C
- Normal low
- 23°C
- Reanalysis high
- 41°Cin 2018
- Reanalysis low
- 20°Cin 2004
- Chance of a wet day
- 0%
- Daylight
- 12 h 04 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 | 22°C | 8°C | 32°C (2015) | -3°C (1992) | 6 mm | 0.0 |
| February | 25°C | 10°C | 35°C (2009) | -1°C (1992) | 6 mm | 0.0 |
| March | 29°C | 13°C | 39°C (1998) | 2°C (1992) | 3 mm | 0.0 |
| April | 34°C | 19°C | 41°C (2009) | 9°C (1997) | 3 mm | 0.0 |
| May | 40°C | 24°C | 45°C (1998) | 15°C (2005) | 0 mm | 0.0 |
| June | 42°C | 26°C | 47°C (2019) | 21°C (1993) | 0 mm | 0.0 |
| July | 43°C | 28°C | 47°C (2020) | 22°C (1994) | 0 mm | 0.0 |
| August | 43°C | 28°C | 46°C (2020) | 22°C (1991) | 0 mm | 0.0 |
| September | 40°C | 25°C | 45°C (2018) | 18°C (2013) | 0 mm | 0.0 |
| October | 35°C | 20°C | 41°C (2019) | 14°C (1996) | 0 mm | 0.0 |
| November | 28°C | 14°C | 35°C (2019) | 5°C (2011) | 6 mm | 0.0 |
| December | 23°C | 9°C | 30°C (1991) | 0°C (2008) | 6 mm | 0.0 |
| Year | 33°C | 19°C | 30 mm | 0 |
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.
30 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 Ad Dilam.
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 | 0°C | 42% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | -1°C | 34% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | 0°C | 30% | 99% | 1% | 0% | 0% | 0% | 0% |
| April | 2°C | 25% | 97% | 3% | 0% | 0% | 0% | 0% |
| May | 2°C | 17% | 99% | 1% | 0% | 0% | 0% | 0% |
| June | -1°C | 11% | 100% | 0% | 0% | 0% | 0% | 0% |
| July | 1°C | 12% | 100% | 0% | 0% | 0% | 0% | 0% |
| August | 2°C | 14% | 99% | 1% | 0% | 0% | 0% | 0% |
| September | 1°C | 15% | 100% | 0% | 0% | 0% | 0% | 0% |
| October | 1°C | 21% | 99% | 1% | 0% | 0% | 0% | 0% |
| November | 3°C | 37% | 97% | 3% | 1% | 0% | 0% | 0% |
| December | 2°C | 44% | 99% | 1% | 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 September, with the sky 12 percent covered on average; the cloudiest is April, at 42 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 July, averaging 15.5 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 20, with 13 h 38 min of daylight; the shortest is Dec 17, with 10 h 39 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 Ad Dilam 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.