Behbahan climate
Behbahan (Iran) has a hot semi-arid climate (Köppen BSh). The average temperature over the year is 26 °C78 °F, and about 308 mm12 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Behbahan climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1864 | 744 | 1254 | 572.3 |
| Feb | 2068 | 846 | 1457 | 321.3 |
| Mar | 2678 | 1253 | 1966 | 381.5 |
| Apr | 3188 | 1762 | 2475 | 241.0 |
| May | 39102 | 2374 | 3188 | 60.2 |
| Jun | 44112 | 2882 | 3697 | 40.2 |
| Jul | 46115 | 3086 | 38100 | 20.1 |
| Aug | 45114 | 3085 | 3799 | 50.2 |
| Sep | 41107 | 2679 | 3493 | 20.1 |
| Oct | 3595 | 2170 | 2883 | 100.4 |
| Nov | 2577 | 1457 | 2067 | 592.3 |
| Dec | 1967 | 948 | 1457 | 662.6 |
| Year | 46115 | 744 | 2678 | 30812 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 56% | 57% | 3.3 | 10:22 |
| Feb | 52% | 53% | 4.2 | 11:04 |
| Mar | 44% | 45% | 5.5 | 11:54 |
| Apr | 39% | 53% | 6.2 | 12:53 |
| May | 24% | 31% | 7.6 | 13:41 |
| Jun | 13% | 12% | 8.4 | 14:07 |
| Jul | 14% | 19% | 7.9 | 13:56 |
| Aug | 17% | 19% | 7.5 | 13:15 |
| Sep | 17% | 21% | 6.6 | 12:18 |
| Oct | 23% | 31% | 5.3 | 11:22 |
| Nov | 42% | 50% | 3.8 | 10:34 |
| Dec | 54% | 53% | 3.2 | 10:11 |
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 Behbahan is like
The warmest month is July, with an average high of 46 °C115 °F and a low of 30 °C86 °F. The coldest is January, when highs average 18 °C64 °F and lows 7 °C44 °F. Seasons are strongly marked: the warmest month is on average 25.9 °C46.7 °F warmer than the coldest.
It is dry, with about 308 mm12 in of precipitation per year. The wettest three-month stretch is November–January, which brings 59% of the annual total. Months with less than 20 mm0.8 in on average: May–October. The wettest month is December (66 mm2.6 in), the driest is July (2 mm0.1 in).
Relative humidity ranges from 13% in June to 56% in January. The clearest skies (lowest average cloud amount, 12%) are typical of June. Average wind speed near the ground ranges from 7 km/h (4 mph) in December to 12 km/h (7 mph) in June. Daylight lasts from about 10.2 hours in December to 14.1 hours in June.
Best time to visit Behbahan
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 66 mm2.6 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 46 °C115 °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 Behbahan
- Winter (December–February) — highs 1864 to 20 °C68 °F, lows 744 to 9 °C48 °F, about 52 mm2.0 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 °C102 °F, lows 1253 to 23 °C74 °F, about 23 mm0.9 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 44112 to 46 °C115 °F, lows 2882 to 30 °C86 °F, about 4 mm0.2 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 2577 to 41 °C107 °F, lows 1457 to 26 °C79 °F, about 24 mm0.9 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Behbahan compares
Compared with Bandar-e Mahshahr, about 101 km to the west, Behbahan is on average 1.2 °C2.2 °F cooler and receives 66% more precipitation (308 mm12 in vs 186 mm7.3 in). The difference is largest in April (1.6 °C2.9 °F cooler).
Of the 82 places in Iran covered by World Climates, Behbahan is the 12th warmest by annual mean temperature and the 27th 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), Al-Kut (Iraq, BWh) and Qalat Sukkar (Iraq, BWh).
Nearby places
- Bandar-e Mahshahr 101 km · 27 °C80 °F · 186 mm7.3 in
- Izeh 142 km · 22 °C71 °F · 284 mm11 in
- Ahvaz 169 km · 27 °C80 °F · 197 mm7.8 in
- Masjed Soleyman 174 km · 26 °C79 °F · 289 mm11 in
- Kazerun 174 km · 23 °C73 °F · 277 mm11 in
- Borazjan 175 km · 28 °C82 °F · 303 mm12 in
- Al Faw 183 km · 26 °C79 °F · 89 mm3.5 in
- Bushehr 190 km · 26 °C79 °F · 316 mm12 in
Frequently asked questions
What is the warmest month in Behbahan?
July is the warmest month in Behbahan, with an average high of 46 °C (115 °F) and an average low of 30 °C (86 °F).
What is the coldest month in Behbahan?
January is the coldest month, with an average high of 18 °C (64 °F) and an average low of 7 °C (44 °F).
When does it rain the most in Behbahan?
December is the wettest month with about 66 mm (2.6 in) of precipitation; July is the driest with about 2 mm (0.1 in).
What is the best time to visit Behbahan?
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 233 m, while Behbahan lies at about 326 m. Temperatures on this page were therefore adjusted by −0.6 °C1.1 °F using the standard lapse rate of 6.5 °C per 1,000 m.