Dezful climate
Dezful (Iran) has a hot semi-arid climate (Köppen BSh). The average temperature over the year is 26 °C79 °F, and about 294 mm12 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Dezful climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1763 | 643 | 1253 | 451.8 | 1 |
| Feb | 2068 | 846 | 1457 | 321.3 | 1 |
| Mar | 2678 | 1253 | 1965 | 391.5 | 0 |
| Apr | 3188 | 1762 | 2475 | 411.6 | 0 |
| May | 39103 | 2374 | 3188 | 130.5 | 0 |
| Jun | 46115 | 2984 | 3799 | 40.1 | 0 |
| Jul | 48118 | 3289 | 40104 | 30.1 | 0 |
| Aug | 47117 | 3289 | 39103 | 00.0 | 0 |
| Sep | 43110 | 2781 | 3595 | 10.0 | 0 |
| Oct | 3696 | 2271 | 2984 | 180.7 | 0 |
| Nov | 2577 | 1356 | 1967 | 441.8 | 0 |
| Dec | 1967 | 947 | 1457 | 542.1 | 0 |
| Year | 48118 | 643 | 2679 | 29412 | 2 |
“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 | 57% | 43% | 3.0 | 10:14 |
| Feb | 54% | 44% | 4.0 | 10:59 |
| Mar | 46% | 43% | 5.2 | 11:54 |
| Apr | 41% | 50% | 6.0 | 12:56 |
| May | 26% | 37% | 7.2 | 13:48 |
| Jun | 11% | 14% | 8.3 | 14:16 |
| Jul | 11% | 17% | 7.9 | 14:05 |
| Aug | 11% | 16% | 7.4 | 13:20 |
| Sep | 12% | 15% | 6.4 | 12:19 |
| Oct | 22% | 28% | 4.8 | 11:19 |
| Nov | 44% | 39% | 3.4 | 10:27 |
| Dec | 55% | 42% | 2.8 | 10:02 |
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 Dezful is like
The warmest month is July, with an average high of 48 °C118 °F and a low of 32 °C89 °F. The coldest is January, when highs average 17 °C63 °F and lows 6 °C43 °F. Seasons are strongly marked: the warmest month is on average 28 °C50.4 °F warmer than the coldest.
It is dry, with about 294 mm12 in of precipitation per year. The wettest three-month stretch is November–January, which brings 49% of the annual total. Months with less than 20 mm0.8 in on average: May–October. The wettest month is December (54 mm2.1 in), the driest is August (0 mm0.0 in).
Relative humidity ranges from 11% in August to 57% in January. The clearest skies (lowest average cloud amount, 14%) are typical of June. Average wind speed near the ground ranges from 6 km/h (4 mph) in December to 9 km/h (6 mph) in June. Daylight lasts from about 10.0 hours in December to 14.3 hours in June.
Best time to visit Dezful
Based on these averages, the most comfortable months for sightseeing and outdoor activities are February and March and November and December: average highs of 19 °C67 °F to 26 °C78 °F with 32 mm1.3 in to 54 mm2.1 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 48 °C118 °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 Dezful
- Winter (December–February) — highs 1763 to 20 °C68 °F, lows 643 to 9 °C47 °F, about 44 mm1.7 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 2678 to 39 °C103 °F, lows 1253 to 23 °C74 °F, about 31 mm1.2 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 46115 to 48 °C118 °F, lows 2984 to 32 °C89 °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 2577 to 43 °C110 °F, lows 1356 to 27 °C81 °F, about 21 mm0.8 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Dezful compares
Compared with Ahvaz, about 121 km to the south, Dezful is on average 0.6 °C1.2 °F cooler and receives 49% more precipitation (294 mm12 in vs 197 mm7.8 in). The difference is largest in April (1.6 °C2.9 °F cooler).
Of the 82 places in Iran covered by World Climates, Dezful is the 11th warmest by annual mean temperature and the 33rd 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: Al Amarah (Iraq, BWh), Qalat Sukkar (Iraq, BWh) and Al-Kut (Iraq, BWh).
The same NASA POWER grid cell also contains Andimeshk (pop. 135,116). Their long-term averages in this dataset are essentially the same as for Dezful, so they do not have separate pages.
Nearby places
- Shushtar 56 km · 27 °C80 °F · 248 mm9.8 in
- Masjed Soleyman 98 km · 26 °C79 °F · 289 mm11 in
- Ahvaz 121 km · 27 °C80 °F · 197 mm7.8 in
- Khorramabad 123 km · 18 °C65 °F · 357 mm14 in
- Al Amarah 133 km · 26 °C78 °F · 198 mm7.8 in
- Dorud 138 km · 16 °C62 °F · 350 mm14 in
- Izeh 151 km · 22 °C71 °F · 284 mm11 in
- Borujerd 172 km · 15 °C59 °F · 324 mm13 in
Frequently asked questions
What is the warmest month in Dezful?
July is the warmest month in Dezful, with an average high of 48 °C (118 °F) and an average low of 32 °C (89 °F).
What is the coldest month in Dezful?
January is the coldest month, with an average high of 17 °C (63 °F) and an average low of 6 °C (43 °F).
When does it rain the most in Dezful?
December is the wettest month with about 54 mm (2.1 in) of precipitation; August is the driest with about 0 mm (0.0 in).
What is the best time to visit Dezful?
Judging by long-term averages, the most comfortable months are February and March 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 280 m, while Dezful lies at about 143 m. Temperatures on this page were therefore adjusted by +0.9 °C1.6 °F using the standard lapse rate of 6.5 °C per 1,000 m.