Iran Climatic Classifications

Code Description Group Number of states/regions States/regions
Csa Mediterranean, hot summer Temperate 9 Alborz Chahar Mahall and Bakhtiari Ilam Kermanshah Lorestan Mazandaran Qazvin Tehran West Azarbaijan
Bsk Mid-latitude steppe Arid 7 Esfahan Fars Golestan Kerman North Khorasan Razavi Khorasan South Khorasan
Bwk Mid-latitude desert Arid 6 Ardebil Hamadan Kordestan Markazi Semnan Yazd
Bsh Subtropical steppe Arid 3 Khuzestan Kohgiluyeh and Buyer Ahmad Qom
Bwh Subtropical desert Arid 3 Bushehr Hormozgan Sistan and Baluchestan
Dsb Humid continental, dry warm summer Cold (continental) 2 East Azarbaijan Zanjan
Cfa Humid subtropical, no dry season Temperate 1 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

Month Jan Feb Mar Apr May Jun Jul Aug Sep Nov Oct Dec Year
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) 6.48 7.54 8.27 8.21 7.31 2.38 1.65 1.59 1.76 4.38 6.09 5.01 5.06
Average relative humidity (%) 56.28 56.49 47.95 42.35 35.33 27.71 28.13 29.18 31.75 39.13 48.78 51.64 41.23
Mean monthly sunshine hours 8.19 8.83 10.9 12.65 13.78 14.26 14.01 13.33 12.05 9.44 8.43 8.28 11.18

Iran Climate Graph

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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