Sirjan, Iran Climate
The warmest month is July, with an average high of 37°C; the coldest is January, with an average low of -1°C. A normal year brings 143 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
- 31°C
- Normal low
- 15°C
- Reanalysis high
- 34°Cin 2019
- Reanalysis low
- 9°Cin 2007
- Chance of a wet day
- 0%
- Daylight
- 12 h 03 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 | -1°C | 22°C (2017) | -12°C (2014) | 34 mm | 6.2 |
| February | 15°C | 1°C | 24°C (2008) | -8°C (2008) | 23 mm | 2.8 |
| March | 19°C | 4°C | 30°C (2010) | -6°C (2012) | 25 mm | 3.1 |
| April | 25°C | 9°C | 33°C (2002) | -1°C (1997) | 12 mm | 3.0 |
| May | 31°C | 14°C | 38°C (2009) | 5°C (1993) | 3 mm | 0.0 |
| June | 36°C | 19°C | 41°C (2005) | 11°C (1993) | 0 mm | 0.0 |
| July | 37°C | 21°C | 43°C (1991) | 14°C (1999) | 0 mm | 0.0 |
| August | 36°C | 19°C | 41°C (2019) | 13°C (2006) | 3 mm | 0.0 |
| September | 33°C | 16°C | 38°C (2001) | 7°C (1994) | 0 mm | 0.0 |
| October | 27°C | 12°C | 33°C (2006) | 3°C (1994) | 3 mm | 0.0 |
| November | 20°C | 5°C | 27°C (2003) | -3°C (2019) | 15 mm | 3.0 |
| December | 15°C | 1°C | 26°C (1998) | -7°C (1994) | 25 mm | 3.1 |
| Year | 26°C | 10°C | 143 mm | 21 |
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.
143 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 Sirjan.
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 | -5°C | 54% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | -4°C | 51% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | -3°C | 45% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | -1°C | 37% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | -1°C | 25% | 100% | 0% | 0% | 0% | 0% | 0% |
| June | -2°C | 16% | 100% | 0% | 0% | 0% | 0% | 0% |
| July | 1°C | 19% | 99% | 1% | 0% | 0% | 0% | 0% |
| August | -1°C | 19% | 99% | 1% | 0% | 0% | 0% | 0% |
| September | -3°C | 19% | 100% | 0% | 0% | 0% | 0% | 0% |
| October | -4°C | 25% | 100% | 0% | 0% | 0% | 0% | 0% |
| November | -4°C | 39% | 100% | 0% | 0% | 0% | 0% | 0% |
| December | -5°C | 49% | 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 September, with the sky 21 percent covered on average; the cloudiest is April, at 47 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 August, averaging 17.6 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 15, with 14 h 02 min of daylight; the shortest is Dec 17, with 10 h 15 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 Sirjan 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.