Jahrom climate
Jahrom (Iran) has a hot desert climate (Köppen BWh). The average temperature over the year is 23 °C73 °F, and about 199 mm7.8 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Jahrom climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1763 | 338 | 1050 | 471.9 | 7 |
| Feb | 2067 | 541 | 1254 | 411.6 | 4 |
| Mar | 2476 | 947 | 1662 | 341.3 | 0 |
| Apr | 3085 | 1457 | 2271 | 190.8 | 0 |
| May | 3798 | 1967 | 2883 | 20.1 | 0 |
| Jun | 42107 | 2475 | 3391 | 40.1 | 0 |
| Jul | 43109 | 2679 | 3494 | 10.0 | 0 |
| Aug | 42107 | 2576 | 3391 | 20.1 | 0 |
| Sep | 38100 | 2170 | 3085 | 10.0 | 0 |
| Oct | 3290 | 1762 | 2476 | 10.0 | 0 |
| Nov | 2475 | 1050 | 1763 | 220.9 | 0 |
| Dec | 1966 | 542 | 1254 | 261.0 | 3 |
| Year | 43109 | 338 | 2373 | 1997.8 | 14 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 52% | 33% | 3.9 | 10:31 |
| Feb | 51% | 35% | 4.7 | 11:09 |
| Mar | 44% | 33% | 5.8 | 11:55 |
| Apr | 38% | 38% | 6.7 | 12:49 |
| May | 23% | 23% | 7.7 | 13:33 |
| Jun | 14% | 13% | 8.1 | 13:57 |
| Jul | 18% | 24% | 7.5 | 13:47 |
| Aug | 20% | 23% | 7.2 | 13:09 |
| Sep | 20% | 14% | 6.5 | 12:17 |
| Oct | 25% | 13% | 5.5 | 11:26 |
| Nov | 39% | 29% | 4.2 | 10:41 |
| Dec | 50% | 30% | 3.6 | 10:20 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Jahrom is like
The warmest month is July, with an average high of 43 °C109 °F and a low of 26 °C79 °F. The coldest is January, when highs average 17 °C63 °F and lows 3 °C38 °F. Seasons are strongly marked: the warmest month is on average 24.1 °C43.4 °F warmer than the coldest.
It is dry, with about 199 mm7.8 in of precipitation per year. The wettest three-month stretch is January–March, which brings 61% of the annual total. Months with less than 20 mm0.8 in on average: April–October. The wettest month is January (47 mm1.9 in), the driest is October (1 mm0.0 in).
Relative humidity ranges from 14% in June to 52% in January. The clearest skies (lowest average cloud amount, 13%) are typical of June. Average wind speed near the ground ranges from 7 km/h (4 mph) in November to 9 km/h (6 mph) in July. Daylight lasts from about 10.3 hours in December to 13.9 hours in June.
Best time to visit Jahrom
Based on these averages, the most comfortable months for sightseeing and outdoor activities are February–April and November and December: average highs of 19 °C66 °F to 30 °C85 °F with 19 mm0.8 in to 41 mm1.6 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 43 °C109 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Jahrom
- Winter (December–February) — highs 1763 to 20 °C67 °F, lows 338 to 5 °C42 °F, about 38 mm1.5 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2476 to 37 °C98 °F, lows 947 to 19 °C67 °F, about 18 mm0.7 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 42107 to 43 °C109 °F, lows 2475 to 26 °C79 °F, about 2 mm0.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 2475 to 38 °C100 °F, lows 1050 to 21 °C70 °F, about 8 mm0.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
How Jahrom compares
Compared with Shiraz, about 159 km to the northwest, Jahrom is on average 4.5 °C8 °F warmer and receives 27% less precipitation (199 mm7.8 in vs 273 mm11 in). The difference is largest in May (5.4 °C9.7 °F warmer).
Of the 82 places in Iran covered by World Climates, Jahrom is the 14th warmest by annual mean temperature and the 58th wettest by annual precipitation. See all of them on the Iran climate page.
Places in other countries with the most similar temperature and rainfall pattern: Bayji (Iraq, BWh), Samarra (Iraq, BWh) and Al Fallujah (Iraq, BWh).
Nearby places
- Shiraz 159 km · 18 °C65 °F · 273 mm11 in
- Marvdasht 170 km · 18 °C64 °F · 307 mm12 in
- Kazerun 223 km · 23 °C73 °F · 277 mm11 in
- Sirjan 232 km · 18 °C65 °F · 152 mm6.0 in
- Borazjan 244 km · 28 °C82 °F · 303 mm12 in
- Bushehr 271 km · 26 °C79 °F · 316 mm12 in
- Bandar Abbas 305 km · 28 °C83 °F · 114 mm4.5 in
- Rafsanjan 317 km · 19 °C66 °F · 126 mm5.0 in
Frequently asked questions
What is the warmest month in Jahrom?
July is the warmest month in Jahrom, with an average high of 43 °C (109 °F) and an average low of 26 °C (79 °F).
What is the coldest month in Jahrom?
January is the coldest month, with an average high of 17 °C (63 °F) and an average low of 3 °C (38 °F).
When does it rain the most in Jahrom?
January is the wettest month with about 47 mm (1.9 in) of precipitation; October is the driest with about 1 mm (0.0 in).
What is the best time to visit Jahrom?
Judging by long-term averages, the most comfortable months are February–April and November and December.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 1,238 m, while Jahrom lies at about 1,050 m. Temperatures on this page were therefore adjusted by +1.2 °C2.2 °F using the standard lapse rate of 6.5 °C per 1,000 m.