Iran Climatic Classifications

CodeDescriptionGroupNumber of states/regionsStates/regions
CsaMediterranean, hot summerTemperate9 Alborz Chahar Mahall and Bakhtiari Ilam Kermanshah Lorestan Mazandaran Qazvin Tehran West Azarbaijan
BskMid-latitude steppeArid7 Esfahan Fars Golestan Kerman North Khorasan Razavi Khorasan South Khorasan
BwkMid-latitude desertArid6 Ardebil Hamadan Kordestan Markazi Semnan Yazd
BshSubtropical steppeArid3 Khuzestan Kohgiluyeh and Buyer Ahmad Qom
BwhSubtropical desertArid3 Bushehr Hormozgan Sistan and Baluchestan
DsbHumid continental, dry warm summerCold (continental)2 East Azarbaijan Zanjan
CfaHumid subtropical, no dry seasonTemperate1 Gilan

Summary: Most regions (9) in Iran lie in the Mediterranean, hot summer climate zone (Köppen: Csa). The mean average of annual temperatures range from a high of 30.75°C (87.35°F) in Khuzestan to a low of 10.24°C (50.43°F) in Ardebil.

Climate Iran: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)22.62(72.72)23.38(74.08)27.56(81.61)33.99(93.18)40.81(105.46)46.3(115.34)48.65(119.57)48.14(118.65)44.29(111.72)37.07(98.73)28.24(82.83)24.58(76.24)48.65(119.57)
Average high °C (°F)8.86(47.95)10.2(50.36)15.66(60.19)21.24(70.23)27.26(81.07)32.62(90.72)34.81(94.66)33.6(92.48)29.97(85.95)23.43(74.17)15.11(59.2)10.74(51.33)21.96(71.53)
Daily mean °C (°F)5.68(42.22)6.96(44.53)12.22(54.0)17.78(64.0)23.97(75.15)29.03(84.25)31.03(87.85)29.63(85.33)25.84(78.51)19.57(67.23)11.91(53.44)7.57(45.63)18.43(65.17)
Average low °C (°F)0.79(33.42)1.73(35.11)6.33(43.39)11.47(52.65)17.12(62.82)21.1(69.98)23.02(73.44)21.92(71.46)18.34(65.01)12.79(55.02)6.56(43.81)2.68(36.82)11.99(53.58)
Record low °C (°F)-8.0(17.6)-6.64(20.05)-0.87(30.43)3.85(38.93)9.08(48.34)12.08(53.74)14.21(57.58)12.99(55.38)10.74(51.33)4.68(40.42)-0.28(31.5)-5.37(22.33)-8.0(17.6)
Average precipitation mm (inches)55.61(2.19)63.03(2.48)65.71(2.59)54.91(2.16)39.35(1.55)9.58(0.38)8.07(0.32)8.08(0.32)9.4(0.37)33.82(1.33)55.4(2.18)43.77(1.72)37.23(1.47)
Average precipitation days (≥ 1.0 mm)6.487.548.278.217.312.381.651.591.764.386.095.015.06
Average relative humidity (%)56.2856.4947.9542.3535.3327.7128.1329.1831.7539.1348.7851.6441.23
Mean monthly sunshine hours8.198.8310.912.6513.7814.2614.0113.3312.059.448.438.2811.18

Iran Climate Graph

Iran

Iran’s Cities by Temperature

Iran’s states/regions ranking by average yearly temperature:

Khuzestan
30.75°C | 87.35°F
Hormozgan
29.43°C | 84.97°F
Bushehr
28.78°C | 83.8°F
Sistan and Baluchestan
28.12°C | 82.62°F
Kohgiluyeh and Buyer Ahmad
24.07°C | 75.33°F
Fars
21.13°C | 70.03°F
Golestan
21.1°C | 69.98°F
Qom
21.07°C | 69.93°F
Esfahan
20.12°C | 68.22°F
Mazandaran
19.89°C | 67.8°F
Ilam
19.3°C | 66.74°F
Yazd
19.16°C | 66.49°F
Gilan
18.79°C | 65.82°F
Tehran
18.76°C | 65.77°F
Lorestan
17.86°C | 64.15°F
Kermanshah
17.56°C | 63.61°F
Semnan
17.1°C | 62.78°F
South Khorasan
16.72°C | 62.1°F
Kerman
16.48°C | 61.66°F
Markazi
15.93°C | 60.67°F
Razavi Khorasan
15.76°C | 60.37°F
Qazvin
15.33°C | 59.59°F
North Khorasan
14.94°C | 58.89°F
Chahar Mahall and Bakhtiari
14.63°C | 58.33°F
Hamadan
14.49°C | 58.08°F
Alborz
14.08°C | 57.34°F
East Azarbaijan
13.21°C | 55.78°F
Zanjan
12.37°C | 54.27°F
West Azarbaijan
12.24°C | 54.03°F
Kordestan
12.04°C | 53.67°F
Ardebil
10.24°C | 50.43°F

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