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Pasargadae seen from the fortress of Tall-e Takht, Iran. Author and Copyright Marco Ramerini

The climate of Iran: when to go to Iran ?

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Iran because of its extension and its geographical conformation is a country with a very varied climate. In the country, an arid climate typical of the steppe predominates, which on the Iranian plateau has a marked continental character. The climate of Iran is strongly influenced by the presence and conformation of the mountains. In fact, towards the south, the mountains prevent winds from the sea from bringing humidity into the interior making the climate of most of the country very arid.

THE CLIMATE OF THE IRANIAN PLATEAU

In the Iranian plateau, whose average height is around 1,000 meters, most of the relatively low annual rainfall falls between November and April. In the region of the Iranian plateau, the average annual rainfall records values around 250 millimeters or even lower. The temperatures in the Iranian plateau undergo strong diurnal and seasonal temperature variations. In winter there are average daily temperatures close to zero while in summer, despite the altitude, the average temperatures often exceed 30 ° C.

In the north-west of Iran, the winters are cold with abundant snowfall and the average temperatures are below zero in the months of December and January. Spring and autumn are relatively mild seasons, while summers are dry and hot. Along the Caspian Sea the climate is sub-tropical with mild winters and cool summers. In this area of Iran, due to the presence of the Elbruz Mountains, the rains are abundant and well exceed the average of 1,000 mm per year and in some more western locations they reach up to 2,000 mm per year. Iran’s climate along the Caspian Sea coast has rainfall well distributed throughout the year, but more intense between September and March. In this region, temperatures rarely drop below freezing even in winter and summer temperatures rarely exceed 29 ° C.

THE CLIMATE OF THE SOUTHERN AREAS

In the south of the country the winters are mild and the summers are very hot, with very high average daily temperatures which in the summer months can reach values close to 40 ° C. The climate of Iran in the coastal plains along the Persian Gulf and the Gulf of Oman is characterized by mild winters and very humid and hot summers. The Khuzestan, a plain located in southwestern Iran on the border with Iraq, has a hot summer climate usually accompanied by high humidity. In the highest valleys of the Zagros mountains, rainfall reaches average annual values of over 500 millimeters. In the Zagros mountains, winters are harsh with sub-zero temperatures and heavy snowfalls.

The sea water temperature in Iran is very hot. In July and August it reaches and exceeds 32 ° C. While in February, the month in which the water of the Persian Gulf is colder, it remains above 22 ° C. So with these temperatures swimming in the Persian Gulf can be done at any time of the year.

WHEN TO GO TO IRAN

Due to the vastness of the country and the difference in the climate of Iran, it is difficult to establish an ideal season to visit the country. However in the Iranian plateau, where the most visited and the most interesting tourist attractions of the country are located, the best times for a trip are spring and autumn. These seasons have mild temperatures and usually clear skies. On the other hand, the summer months for the sweltering heat and the winter months for the intense cold should be avoided.

The official page of the Iranian Weather Service.

THE CLIMATE OF IRAN: CLIMATIC TABLES

TEHERAN

TEHERAN (1.191 meters)
Month	Average minimum temperatures (°C)	Average maximum temperatures (°C)	Precip. (mm)	Rainy days (snow days)
January	1,2	8,3	34	9,1 (8,9)
February	3,3	11,1	32	8,4 (6,6)
March	8,0	17,2	41	10,9 (2,5)
April	13,4	22,8	31	10,7 (0,1)
May	18,4	28,5	15	8,8 (0,1)
June	23,1	34,5	3	3,0
July	25,7	36,8	2	2,1
August	24,9	35,9	2	1,3
September	21,3	31,6	1	1,0
October	15,9	25,4	11	5,2
November	8,0	15,8	26	7,1 (0,6)
December	3,3	10,4	34	8,8 (4,9)
YEAR	13,8	23,2	233	76 (23,7)

ISFAHAN

ISFAHAN (1.574 meters)
Month	Average minimum temperatures (°C)	Average maximum temperatures (°C)	Precip. (mm)	Rainy days (snow days)
January	-2,4	8,8	17	4,0 (3,2)
February	-0,2	11,9	14	2,9 (1,7)
March	4,5	16,8	18	3,8 (0,7)
April	9,4	22,0	19	3,5 (0,1)
May	14,2	28,0	9	2,0
June	19,2	34,1	0	0,2
July	21,5	36,4	1	0,3
August	19,8	35,1	0	0,1
September	15,1	31,2	0	0,0
October	9,3	24,4	4	0,8
November	3,6	16,9	10	2,2 (0,2)
December	-0,9	10,8	19	3,7 (1,9)
YEAR	9,4	23,0	112	23,5 (7,8)

SHIRAZ

SHIRAZ (1.500 meters)
Month	Average minimum temperatures (°C)	Average maximum temperatures (°C)	Precip. (mm)	Rainy days (snow days)
January	-0,4	12,1	80	8,7 (1,5)
February	1,2	14,7	50	7,9 (0,6)
March	4,8	18,9	48	7,9
April	8,5	23,8	30	6,4
May	13,2	30,6	6	2,1
June	17,1	36,1	0	0,2
July	19,9	37,8	1	0,8
August	18,8	37,0	0	0,4
September	14,1	33,7	0	0,1
October	8,8	27,8	5	1,2
November	3,8	20,5	21	3,7
December	0,5	14,4	63	7,2 (0,6)
YEAR	9,2	25,6	305	46,6 (2,7)

TABRIZ

TABRIZ (1.351 meters)
Month	Average minimum temperatures (°C)	Average maximum temperatures (°C)	Precip. (mm)	Rainy days (snow days)
January	-5,7	2,3	22	4,9 (9,3)
February	-3,9	4,9	24	5,3 (7,9)
March	0,6	10,6	40	7,7 (4,9)
April	6,0	17,0	51	8,8 (1,0)
May	10,7	22,8	41	7,3
June	15,4	28,8	16	3,2
July	19,3	32,8	5	1,2
August	19,1	32,7	3	0,6
September	14,5	28,3	8	1,3
October	8,4	20,7	22	4,3 (0,2)
November	2,1	12,0	27	4,9 (1,8)
December	-2,9	5,2	22	5,0 (6,2)
YEAR	7,0	18,2	284	54,5 (31,4)

RASHT

RASHT (5 meters)
Month	Average minimum temperatures (°C)	Average maximum temperatures (°C)	Precip. (mm)	Rainy days
January	1,9	10,8	148	11,7
February	2,5	10,9	119	10,7
March	5,1	13,1	111	12,0
April	9,3	19,0	61	8,6
May	14,2	24,2	53	7,7
June	18,0	28,3	39	4,3
July	20,2	30,5	40	3,7
August	19,8	29,9	74	6,8
September	17,2	26,8	142	9,5
October	12,8	21,7	130	12,3
November	8,3	17,7	170	10,7
December	4,2	13,6	166	11,4
YEAR	11,1	20,5	1255	109,4

BANDAR ABBAS

BANDAR ABBAS (9 meters)
Month	Average minimum temperatures (°C)	Average maximum temperatures (°C)	Precip. (mm)	Rainy days
January	12,1	23,5	40	3,3
February	14,0	24,4	47	3,1
March	17,5	27,7	35	2,6
April	20,9	31,6	11	1,3
May	24,7	36,3	5	0,2
June	28,0	38,4	0	0,0
July	30,3	38,2	1	0,1
August	30,1	37,7	2	0,2
September	27,7	36,8	1	0,1
October	23,5	35,0	1	0,1
November	18,0	30,4	5	0,4
December	13,5	25,5	24	2,3
YEAR	21,7	32,1	171	13,7

MASHHAD

MASHHAD (995 meters)
Month	Average minimum temperatures (°C)	Average maximum temperatures (°C)	Precip. (mm)	Rainy days (snow days)
January	-3,8	7,1	32	5,6 (5,6)
February	-1,8	9,3	34	5,8 (5,8)
March	2,9	14,2	55	8,2 (4,0)
April	8,4	20,9	45	6,8 (0,4)
May	12,4	26,8	27	4,5
June	16,4	32,3	4	1,1
July	18,7	34,4	1	0,3
August	16,5	33,1	1	0,2
September	11,7	28,9	2	0,5
October	6,4	22,5	8	1,5 (0,1)
November	1,9	15,5	16	2,9 (1,2)
December	-1,7	9,8	24	4,2 (3,8)
YEAR	7,3	21,2	251	41,6 (20,9)