Climate in Shiraz (Iran)

The climate of Shiraz is subtropical semi-arid, with fairly mild winters and very hot, sunny summers. Precipitation, scarce, occurs mostly from November to April.
According to the Köppen classification, the climate is hot semi-arid (BSh), although not far from the cold semi-arid or steppe climate (BSk), given that the average annual temperature is just over 18 °C (64.5 °F).
Shiraz is a city of 1,500,000 inhabitants located in the south of Iran, in the province of Fars (the original homeland of the Persian people), of which it is the capital, at 1,500 meters (4,900 feet) above sea level and at 29 degrees north latitude.
We are in the area occupied by the Zagros mountains. The closest mountain to Shiraz is Mount Derak, which is 2,900 meters (9,514 ft) high.
Also near the city is Lake Maharloo, a salt lake fed by the seasonal Rudkhaneh Khushak River.
About 50 km (30 mi) northeast of Shiraz is the ancient city of Persepolis, which is located at 1,600 meters (5,250 ft) above sea level and has a similar climate. Further northeast, at 1,850 meters (6,050 ft), is Pasargadae.

Winter, from December to February, is quite mild, despite the altitude, because the latitude is low and the mountains somewhat hinder the descent of cold air from the north. However, at night the temperature drops considerably, and goes often below freezing.
There can be mild periods, with highs of 18 °C (64.5 °F) or more, but also cold periods, during which snowfall can occur. During cold spells, the temperature can drop to -7/-8 °C (18/19 °F) or below. The record is -14 °C (7 °F), set in January 1973.

Summer, from June to August, is very hot, although air humidity is low. On the hottest days, the temperature can exceed 40 °C (104 °F). In July 2024 it reached 43.5 °C (110.3 °F), and the average high was 41 °C (106 °F).

Shiraz - Climate data

In Shiraz, the average temperature of the coldest month (January) is of 6.4 °C (43.4 °F), that of the warmest month (July) is of 29.6 °C (85.4 °F). Here are the average temperatures.
Precipitation amounts to 325 millimeters (12.8 inches) per year: it is therefore scarce. It ranges from 0 mm (0 in) in the driest month (September) to 79 mm (3.1 in) in the wettest one (January). Here is the average precipitation.
There are on average around 3365 sunshine hours per year. Here are the average hours of sunshine per day.

Shiraz - Weather by month

Based on the period 1991-2020

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January, the coldest month of the year, is generally a quite cold month. However, there are remarkable differences between night and day. The average temperature is of 6.4 °C (43 °F), with a minimum of -0.2 °C (31.6 °F) and a maximum of 12.9 °C (55.2 °F).
On the coldest nights of the month, the temperature usually drops to around -4.5 °C (24 °F). However, it dropped to -9 °C (15.8 °F) in January 1996.
On the warmest days of the month, the temperature usually reaches around 18.5 °C (65 °F). However, it reached 23.4 °C (74.1 °F) in January 2017.
Precipitation amounts to 79 mm (3.1 in), distributed over 6 days.
The day lasts on average 10 hours and 30 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 57%.
The average wind speed is 5 kph (3 mph).

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February is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of 8.8 °C (48 °F), with a minimum of 1.9 °C (35.4 °F) and a maximum of 15.6 °C (60.1 °F).
On the coldest nights of the month, the temperature usually drops to around -3 °C (26.5 °F). However, it dropped to -7.2 °C (19 °F) in February 2008.
On the warmest days of the month, the temperature usually reaches around 21.5 °C (70.5 °F). However, it reached 25.8 °C (78.4 °F) in February 1996.
Precipitation amounts to 53.6 mm (2.1 in), distributed over 5 days.
The day lasts on average 11 hours and 5 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 49%.
The average wind speed is 7 kph (4 mph).

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March is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of 12.2 °C (54 °F), with a minimum of 4.9 °C (40.8 °F) and a maximum of 19.6 °C (67.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 0 °C (32 °F). However, it dropped to -3.6 °C (25.5 °F) in March 2012.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 25 °C (77 °F). However, it reached 30.8 °C (87.4 °F) in March 2018.
Precipitation amounts to 52 mm (2 in), distributed over 5 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 43%.
The average wind speed is 8 kph (5 mph).

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April is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 17.2 °C (63 °F), with a minimum of 9.3 °C (48.7 °F) and a maximum of 25 °C (77 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 4.5 °C (40 °F). However, it dropped to 0 °C (32 °F) in April 1997.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 30 °C (86.5 °F). However, it reached 34.4 °C (93.9 °F) in April 2003.
Precipitation amounts to 26 mm (1 in), distributed over 3 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 39%.
The average wind speed is 8 kph (5 mph).

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May is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 22.6 °C (73 °F), with a minimum of 14 °C (57.2 °F) and a maximum of 31.3 °C (88.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 10 °C (50 °F). However, it dropped to 6.6 °C (43.9 °F) in May 1992.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 36 °C (96.5 °F). However, it reached 38.8 °C (101.8 °F) in May 2017.
Precipitation amounts to only 5.8 mm (0.2 in), and all occurs in one day.
The day lasts on average 13 hours and 35 minutes.
There are on average 10.5 hours of sunshine per day. So, the sun shines 78% of the time.
The average humidity is 25%. Hence, the air is normally dry.
The average wind speed is 9 kph (5 mph).

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June is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 27.2 °C (81 °F), with a minimum of 17.8 °C (64 °F) and a maximum of 36.7 °C (98.1 °F).
On the coldest nights, the temperature usually drops to around 15 °C (59 °F). However, it dropped to 11 °C (51.8 °F) in June 2011.
On the warmest days, the temperature usually reaches around 39.5 °C (103 °F). However, it reached 41 °C (105.8 °F) in June 2005.
Precipitation amounts to only 0.2 mm (0 in), distributed over 0 days.
The day lasts on average 14 hours and 0 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 12 hours of sunshine per day. So, the sun shines 84% of the time.
The average humidity is 18%. Hence, the air is normally dry.
The average wind speed is 8 kph (5 mph).

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July, the hottest month of the year, is generally a very hot month. However, there are remarkable differences between night and day. The average temperature is of 29.6 °C (85 °F), with a minimum of 20.6 °C (69.1 °F) and a maximum of 38.7 °C (101.7 °F).
On the coldest nights of the month, the temperature usually drops to around 18.5 °C (65 °F). However, it dropped to 16 °C (60.8 °F) in July 1992.
On the warmest days of the month, the temperature usually reaches around 41 °C (106 °F). However, it reached 43 °C (109.4 °F) in July 2010.
Precipitation amounts to only 0.4 mm (0 in), distributed over 0 days.
The day lasts on average 13 hours and 50 minutes.
There are on average 11 hours of sunshine per day. So, the sun shines 79% of the time.
The average humidity is 20%. Hence, the air is normally dry.
The average wind speed is 8 kph (5 mph).

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August is generally a very hot month. However, there are remarkable differences between night and day. The average temperature is of 28.6 °C (83 °F), with a minimum of 19.4 °C (66.9 °F) and a maximum of 37.7 °C (99.9 °F).
On the coldest nights of the month, the temperature usually drops to around 17 °C (62 °F). However, it dropped to 12.6 °C (54.7 °F) in August 2010.
On the warmest days of the month, the temperature usually reaches around 40 °C (104 °F). However, it reached 42.4 °C (108.3 °F) in August 2019.
Precipitation amounts to only 1.4 mm (0.1 in), distributed over 0 days.
The day lasts on average 13 hours and 10 minutes.
There are on average 11 hours of sunshine per day. So, the sun shines 83% of the time.
The average humidity is 21%. Hence, the air is normally dry.
The average wind speed is 7 kph (4 mph).

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September is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 24.7 °C (76 °F), with a minimum of 15.1 °C (59.2 °F) and a maximum of 34.2 °C (93.6 °F).
On the coldest nights, the temperature usually drops to around 12 °C (53 °F). However, it dropped to 7.8 °C (46 °F) in September 1992.
On the warmest days, the temperature usually reaches around 37 °C (99 °F). However, it reached 39.2 °C (102.6 °F) in September 2019.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 12 hours and 20 minutes.
There are on average 10.5 hours of sunshine per day. So, the sun shines 84% of the time.
The average humidity is 22%. Hence, the air is normally dry.
The average wind speed is 6 kph (4 mph).

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October is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 19.2 °C (67 °F), with a minimum of 10 °C (50 °F) and a maximum of 28.4 °C (83.1 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 6.5 °C (44 °F). However, it dropped to 3 °C (37.4 °F) in October 2011.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 32 °C (90 °F). However, it reached 34.8 °C (94.6 °F) in October 2019.
Precipitation amounts to only 4 mm (0.2 in), and all occurs in one day.
The day lasts on average 11 hours and 25 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 83% of the time.
The average humidity is 29%. Hence, the air is normally dry.
The average wind speed is 5 kph (3 mph).

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November is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of 12.4 °C (54 °F), with a minimum of 4.6 °C (40.3 °F) and a maximum of 20.3 °C (68.5 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 0 °C (31.5 °F). However, it dropped to -3 °C (26.6 °F) in November 2007.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 25.5 °C (78.5 °F). However, it reached 29 °C (84.2 °F) in November 2009.
Precipitation amounts to 37.8 mm (1.5 in), distributed over 3 days.
The day lasts on average 10 hours and 40 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 46%.
The average wind speed is 5 kph (3 mph).

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December is generally a quite mild month. However, there are remarkable differences between night and day. The average temperature is of 8.2 °C (47 °F), with a minimum of 1.1 °C (34 °F) and a maximum of 15.3 °C (59.5 °F).
On the coldest nights of the month, the temperature usually drops to around -3.5 °C (26 °F). However, it dropped to -7.4 °C (18.7 °F) in December 2008.
On the warmest days of the month, the temperature usually reaches around 20 °C (68 °F). However, it reached 25 °C (77 °F) in December 2010.
Precipitation amounts to 64.1 mm (2.5 in), distributed over 5 days.
The day lasts on average 10 hours and 20 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 7.5 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 56%.
The average wind speed is 4 kph (2 mph).