Qom climate
Qom (Iran) has a hot desert climate (Köppen BWh). The average temperature over the year is 19 °C66 °F, and about 207 mm8.1 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Qom climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1253 | −131 | 542 | 251.0 |
| Feb | 1558 | 134 | 846 | 210.8 |
| Mar | 2069 | 542 | 1355 | 321.3 |
| Apr | 2678 | 1051 | 1864 | 381.5 |
| May | 3290 | 1661 | 2476 | 140.6 |
| Jun | 38101 | 2171 | 3086 | 80.3 |
| Jul | 40104 | 2476 | 3290 | 10.0 |
| Aug | 39102 | 2374 | 3188 | 10.0 |
| Sep | 3595 | 1966 | 2780 | 10.0 |
| Oct | 2882 | 1456 | 2169 | 140.6 |
| Nov | 1865 | 542 | 1253 | 261.0 |
| Dec | 1356 | 133 | 744 | 251.0 |
| Year | 40104 | −131 | 1966 | 2078.1 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 60% | 49% | 2.8 | 10:04 |
| Feb | 56% | 49% | 3.7 | 10:53 |
| Mar | 49% | 51% | 4.9 | 11:53 |
| Apr | 47% | 53% | 5.8 | 13:01 |
| May | 36% | 42% | 6.9 | 13:58 |
| Jun | 22% | 23% | 8.1 | 14:28 |
| Jul | 20% | 26% | 7.8 | 14:15 |
| Aug | 20% | 20% | 7.3 | 13:27 |
| Sep | 23% | 18% | 6.2 | 12:20 |
| Oct | 34% | 32% | 4.6 | 11:15 |
| Nov | 53% | 44% | 3.2 | 10:18 |
| Dec | 60% | 44% | 2.6 | 9:51 |
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 Qom is like
The warmest month is July, with an average high of 40 °C104 °F and a low of 24 °C76 °F. The coldest is January, when highs average 12 °C53 °F and lows −1 °C31 °F. Seasons are strongly marked: the warmest month is on average 26.8 °C48.2 °F warmer than the coldest.
It is dry, with about 207 mm8.1 in of precipitation per year. The wettest three-month stretch is February–April, which brings 44% of the annual total. Months with less than 20 mm0.8 in on average: May–October. The wettest month is April (38 mm1.5 in), the driest is August (1 mm0.0 in).
Relative humidity ranges from 20% in August to 60% in December. The clearest skies (lowest average cloud amount, 18%) are typical of September. Average wind speed near the ground ranges from 8 km/h (5 mph) in December to 13 km/h (8 mph) in July. Daylight lasts from about 9.8 hours in December to 14.5 hours in June.
Best time to visit Qom
Based on these averages, the most comfortable months for sightseeing and outdoor activities are March and April and October and November: average highs of 18 °C65 °F to 28 °C82 °F with 14 mm0.6 in to 38 mm1.5 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 40 °C104 °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 Qom
- Winter (December–February) — highs 1253 to 15 °C58 °F, lows −131 to 1 °C34 °F, about 24 mm0.9 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2069 to 32 °C90 °F, lows 542 to 16 °C61 °F, about 28 mm1.1 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 38101 to 40 °C104 °F, lows 2171 to 24 °C76 °F, about 3 mm0.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 1865 to 35 °C95 °F, lows 542 to 19 °C66 °F, about 14 mm0.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Qom compares
Compared with Tehran, about 127 km to the northeast, Qom is on average 2.1 °C3.8 °F warmer and receives 34% less precipitation (207 mm8.1 in vs 311 mm12 in). The difference is largest in October (2.5 °C4.5 °F warmer).
Of the 82 places in Iran covered by World Climates, Qom is the 29th warmest by annual mean temperature and the 56th 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: Kŭlob (Tajikistan, BSh), Bokhtar (Tajikistan, BSh) and Ashgabat (Turkmenistan, BWh).
The same NASA POWER grid cell also contains Shahrak-e Pardisan (pop. 100,000). Their long-term averages in this dataset are essentially the same as for Qom, so they do not have separate pages.
Nearby places
- Saveh 64 km · 18 °C65 °F · 248 mm9.8 in
- Kashan 88 km · 20 °C67 °F · 156 mm6.2 in
- Kashan 89 km · 20 °C67 °F · 156 mm6.2 in
- Qarchak 108 km · 18 °C65 °F · 334 mm13 in
- Arak 124 km · 14 °C57 °F · 219 mm8.6 in
- Tehran 127 km · 17 °C62 °F · 311 mm12 in
- Karaj 133 km · 14 °C58 °F · 509 mm20 in
- Nazarabad 148 km · 16 °C60 °F · 426 mm17 in
Frequently asked questions
What is the warmest month in Qom?
July is the warmest month in Qom, with an average high of 40 °C (104 °F) and an average low of 24 °C (76 °F).
What is the coldest month in Qom?
January is the coldest month, with an average high of 12 °C (53 °F) and an average low of -1 °C (31 °F).
When does it rain the most in Qom?
April is the wettest month with about 38 mm (1.5 in) of precipitation; August is the driest with about 1 mm (0.0 in).
What is the best time to visit Qom?
Judging by long-term averages, the most comfortable months are March and April and October and November.
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 1,320 m, while Qom lies at about 935 m. Temperatures on this page were therefore adjusted by +2.5 °C4.5 °F using the standard lapse rate of 6.5 °C per 1,000 m.