Spring, Summer, Autumn and Winter in El Gölü, Tabriz

Iran is a vast country, and has different types of climate: mild and quite wet on the coast of the Caspian Sea, continental and arid in the plateau, cold in high mountains, desert and hot on the southern coast and in the southeast. Generally speaking, Iran is an arid country; however, in the west and the north, the rains are more abundant than in the east and the south. The only rainy area is the Caspian Sea coast. Summer is sunny everywhere (except on the shores of the Caspian Sea).

The Caspian Sea

Along the coast overlooking the Caspian Sea, the climate is mild, almost Mediterranean, with fairly mild, rainy winters and hot, humid summers. Daily averages in July and August are around 25 °C/27 °C (77 °C/81 °F), with some chance of thunderstorms. In the western part, winter is a bit colder than in the eastern part: the January average temperature ranges from 5 (41 °C) in the west to 7 °C (44.5 °F) in the east. On the slopes at the foot of the Alborz Mountains, the landscape is particularly green, and covered with forests. This is the wettest area of Iran. In the area to the east of the Caspian Sea, occupied by plains and hills, the climate is arid, almost desert, with hot summers. Since autumn, though mild, is rainy, if you want to visit this area, the best time is spring, especially the month of May.

Climate data for Bandar-e Anzali
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average high °C (°F) 10.1
(50.2)
9.8
(49.6)
11.2
(52.2)
16.2
(61.2)
21.8
(71.2)
26.6
(79.9)
29.4
(84.9)
29.2
(84.6)
25.7
(78.3)
21.2
(70.2)
16.5
(61.7)
12.6
(54.7)
19.2
(66.6)
Average low °C (°F) 4.6
(40.3)
4.4
(39.9)
6.3
(43.3)
10.7
(51.3)
15.9
(60.6)
20.0
(68.0)
22.4
(72.3)
22.2
(72.0)
19.4
(66.9)
15.1
(59.2)
10.5
(50.9)
6.7
(44.1)
13.2
(55.7)
Average rainfall mm (inches) 167.9
(6.61)
122.7
(4.83)
115.1
(4.53)
58.1
(2.29)
49.0
(1.93)
53.8
(2.12)
46.2
(1.82)
115.0
(4.53)
273.1
(10.75)
332.0
(13.07)
306.1
(12.05)
214.5
(8.44)
1,853.5
(72.97)
The Plateau

Much of Iran is covered by high plateaus and mountain ranges. The plateaus experience high temperature variations between winter and summer, and have a continental climate in the north, with cold winters and hot summers, while the climate is sub-tropical in the central-southern part, where winters are a bit milder, and summers are scorching and sunny. In the northernmost part, winter is very cold because of the influence of cold air masses coming from Russia. In summer, the Iranian plateau heats up a lot, so much so that a thermal low pressure forms, but because of the low humidity, the heat is usually bearable, at least when the temperature is not too high.

Climate data for Isfahan
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average high °C (°F) 8.8
(47.8)
11.9
(53.4)
16.8
(62.2)
22.0
(71.6)
28.0
(82.4)
34.1
(93.4)
36.4
(97.5)
35.1
(95.2)
31.2
(88.2)
24.4
(75.9)
16.9
(62.4)
10.8
(51.4)
23.0
(73.4)
Average low °C (°F) −2.4
(27.7)
−0.2
(31.6)
4.5
(40.1)
9.4
(48.9)
14.2
(57.6)
19.1
(66.4)
21.5
(70.7)
19.8
(67.6)
15.1
(59.2)
9.3
(48.7)
3.6
(38.5)
−0.9
(30.4)
9.4
(48.9)
Average rainfall mm (inches) 17.1
(0.67)
14.1
(0.56)
18.2
(0.72)
19.2
(0.76)
8.8
(0.35)
0.6
(0.02)
0.7
(0.03)
0.2
(0.01)
0.0
(0.0)
4.1
(0.16)
9.9
(0.39)
19.6
(0.77)
112.5
(4.43)
The mountains

Iran is a particularly mountainous country. The major ranges are Alborz, whose highest point is Mount Damavand, 5,610 meters (18,405 feet) high and located south of the Caspian Sea, and Zagros, a long chain located in the west, whose highest peaks are around 4,200 meters (13,800 ft), and which shelter the Iranian plateau from the mild currents of Mediterranean origin. In winter, high mountains experience snowfalls, frosts and strong winds. On the summits, snow cover lasts for many months, but it melts almost everywhere in summer because this season is hot even at high altitudes. Only in the north, on the peaks of Alborz, there are glaciers above 3,500 meters (11,500 ft), for example, on Damavand and Alam Kuh.

Climate data for Ardabil
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average high °C (°F) 3.0
(37.4)
4.5
(40.1)
9.3
(48.7)
16.7
(62.1)
19.7
(67.5)
23.2
(73.8)
25.0
(77.0)
24.7
(76.5)
22.6
(72.7)
17.5
(63.5)
11.4
(52.5)
5.7
(42.3)
15.3
(59.5)
Average low °C (°F) −7.9
(17.8)
−6.3
(20.7)
−2.4
(27.7)
2.8
(37.0)
6.0
(42.8)
9.0
(48.2)
11.6
(52.9)
11.6
(52.9)
8.7
(47.7)
4.8
(40.6)
0.3
(32.5)
−4.6
(23.7)
2.8
(37.0)
Average precipitation mm (inches) 23.3
(0.92)
22.1
(0.87)
36.1
(1.42)
40.0
(1.57)
42.6
(1.68)
18.9
(0.74)
5.9
(0.23)
5.5
(0.22)
10.4
(0.41)
31.8
(1.25)
34.5
(1.36)
24.4
(0.96)
295.5
(11.63)
The south

The southern part of Iran, compared with the rest of the country is really a world apart, in fact, it is warm to hot for most of the year, semi-desert and with virtually no winter. The winter is mild in the west, at the border with Iraq, in the plain of the Shatt-al-Arab, where cities like Dezful, Ahwaz and Abadan are found, and where the average in January is about 11 °C (52 °F), while summer is scorchingly hot, with highs around 43/45 °C in July and August, and peaks of 52 °C (125.5 °F). In winter, cold air masses can sometimes lower the temperature, and there may be some frosts at night. Only the northern part is relatively rainy: in Dezful, 385 mm (15 in) of rain fall per year, with moderate rainfall from December to February, while in Ahvaz, rainfall drops to 230 mm (9 in), and in Abadan, in drops to 150 mm (6 in) per year. Along the coast of the Persian Gulf, winter is even milder, with January averages ranging from 14.5 °C (58 °F) in Busher to 18 °C (64 °F) in Bandar-e-Abbas (the latter is located in the Strait of Hormuz). The Persian Gulf is a bit cool for swimming in winter, while it gets very warm in summer, exceeding 30 °C (86 °F) for a few months. East of the Strait of Hormuz, on the Gulf of Oman, the climate is practically tropical, since the average temperature of January reaches 20 °C (68 °F). Summer becomes progressively less hot as you move to the east because this area begins to be affected by the Indian monsoon circulation. The Gulf of Oman is warm enough for swimming even in winter, while it becomes very warm in summer, but a little less than in the Strait of Hormuz. North of this area, and south-east of the Kavir desert, we find another desert, even more inhospitable, the Lut Desert . The Lut, generally sandy, is mild in winter during the day, but nights are cold, while it’s very hot in summer, especially in the southern part, where the altitude drops to 200 meters (650 feet) above sea level. The peaks of summer heat, around 55 °C (131 °F), make it one of the hottest deserts in the world. Further south, the region of Sistan and Baluchistan, at least in the part where altitude is below 1,000 meters (3,300 feet), has a similar climate.

Climate data for Dezful
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average high °C (°F) 17.2
(63.0)
19.6
(67.3)
24.1
(75.4)
30.0
(86.0)
37.5
(99.5)
43.7
(110.7)
46.0
(114.8)
44.9
(112.8)
41.7
(107.1)
34.8
(94.6)
26.2
(79.2)
19.3
(66.7)
32.1
(89.8)
Average low °C (°F) 5.3
(41.5)
6.8
(44.2)
10.0
(50.0)
14.7
(58.5)
20.5
(68.9)
23.8
(74.8)
26.2
(79.2)
25.5
(77.9)
21.1
(70.0)
16.2
(61.2)
10.8
(51.4)
6.8
(44.2)
15.6
(60.2)
Average rainfall mm (inches) 100.6
(3.96)
60.0
(2.36)
50.2
(1.98)
34.5
(1.36)
9.2
(0.36)
0.0
(0.0)
0.2
(0.01)
0.0
(0.0)
0.0
(0.0)
7.4
(0.29)
39.1
(1.54)
83.2
(3.28)
384.4
(15.14)

Iran’s climate statistics in 2018 and 2019

Various regions of Iran have a very different weather and climate. So that the temperature difference sometimes reaches about 50 degrees Celsius. The difference in rainfall is very high in different parts of Iran. Obviously, such differences create a wide variety of climates.

The lowest and highest temperatures recorded in Iran in January 20, 2018

Region name – Province Temp (c) Region name – Province temp(c)
Khalkhal – Ardabil -19 Zarabad – Sistan & Balouchestan 27.6
Kuhrang- Chaharmahal& bakhtiari -18.6 Rask – Sistan & Balouchestan 26.3
Azna – Lorestan -18 Chabahar – Sistan & Balouchestan 26.2
Kangavar – Kermanshah -17 Nikshahr – Sistan & Balouchestan 25.5
Zanjan – Zanjan -17 Qasreqand – Sistan & Balouchestan 25.3
Hezarkanian – Kordestan -16.9 Mirjaveh – Sistan & Balouchestan 25.1
Sarab – East azerbaijan -16 Lengeh – Hormozgan 24.1
Chalderan – West azerbaijan -15.6 Zahak – Sistan & Balouchestan 23.7
Baladeh -Mazandaran -15 Minab – Hormozgan 23.6
Taleqan – Alborz -14.8 Jask – Hormozgan 23.5
Hamedan – Hamdedan -14.4 Zabol – Sistan & Balouchestan 23.3
Firuzkuh – Tehran -13 Qeshm – Hormozgan 21.6
Chadegan- Isfahan -11.8 Bam – kerman 21.6

 

The lowest and highest temperatures recorded in Iran in September 22, 2019 (last day of summer)

Region name – Province Temp (c) Region name – Province temp(c)
Ardabil – Ardabil -0.6 Dehloran – Ilam 46
Varzaqan – East azerbaijan -0.1 Mehran – Ilam 45.3
Sarab – East azerbaijan 0.8 Lamerd – Fars 44.4
Khalkhal – Ardabil 1.9 Abadan – Khuzestan 44.4
Chalderan – West azerbaijan 3.2 Shahdad –  kerman 43.6
Zanjan – Zanjan 3.8 Ahvaz – Khuzestan 43.5
Namin – Ardabil 3.9 Omidiyeh – Khuzestan 43.4
Oshnavieh – West azerbaijan 5 Iranshahr – Sistan & Balouchestan 42.9
Buin va Miandasht – Isfahan 5.5 Chupanan – Isfahan 42.8
Firuzkuh – Tehran 5.8 Zabol – Sistan & Balouchestan 42.4
Saqqez – Kordestan 6.1 Tabas – South Khorasan 42.4
Shahrekord – Chaharmahal& bakhtiari 6.6 Shadegan – Khuzestan 42.2
Urmia – West azerbaijan 6.8 Shushtar – Khuzestan 42

 

The lowest and highest precipitation in Iran from From the first day of Fall in 2018 to the last day of Spring in 2019

Zabol – Sistan & Balouchestan 55.1 Anzali – Gilan 1902
Yazd – Yazd 64.8 Lahijan – Gilan 1603
Kerman – Kerman 74 Abbasabad – Mazandaran 1587
Zahedan – Sistan & Balouchestan 75.3 Sowme’eh Sara – Gilan 1573
Ravar – Kerman 77 Kuhrang – Chaharmahal&bakhtiari 1514
Naein – Isfahan 88.3 Langarud – Gilan 1462
Mirjaveh – Sistan & Balouchestan 82.2 Ramsar – Mazandaran 1451
Nehbandan – South Khorasan 88.4 Astaneh ashrafiyeh – Gilan 1415
Bam – Kerman 92.8 Astara – Gilan 1403
Ardakan -Yazd 92.9 Rasht Gilan 1387
Anar – Kerman 96.8 Tonekabon – Mazandaran 1349
Khur – Isfahan 97.7 Rudsar- Gilan 1245
Rafanjan- Kerman 102.1 Khorramabad – Lorestan 1162
Abu musa island – Hormozgan 110.7 Sardasht – West Azerbaijan 1161
Meybod – Yazd 112.7 Eyvan – Ilam 1100
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