(according to the Köppen classification, hot desert climate - BWh), with very mild winters and very hot, sunny summers. Precipitation is decidedly scarce, just above 100 millimeters (4 inches) per year.
Iranshahr (formerly Pahrah) is a city of 115,000 inhabitants located in the south-east of Iran, in the province of Sistan and Baluchestan, at 550 meters (1,800 feet) above sea level and at 27 degrees north latitude.
, from December to February, is very mild, so much so that the average in January is 15 °C (59 °F). Rainfall is rare even in this season. Unlike other inland zones of Iran, we are in an area sheltered from cold waves and snowfall.
However, there can be periods of cool weather from time to time, when the temperature drops below 5 °C (41 °F) at night, and remains around 10/12 °C (50/54 °F) during the day. Occasionally it can also drop below freezing. In December 1994, it dropped to -3.3 °C (26 °F). In January 2008, there was a rainy day with a maximum of 6 °C (43 °F).
, from June to August, is very hot, although the humidity is low and the wind blows regularly. Despite the altitude, the average temperature, almost 38 °C (100.5 °F) in July, makes Iranshahr one of the hottest cities in the world. However, unlike what happens in the province of Khuzestan, here the temperature does not exceed 50 °C (122 °F). In July 2024 it reached 48.9 °C (120 °F), and there were two days with a minimum of 36 °C (97 °F).
, so there may be some cloudiness and thunderstorms. However, the average amount of rainfall is very low.
(which usually pass further south, over the Arabian Peninsula, or hit Pakistan, further east), as happened with Cyclone Gonu in early June 2007. Since the city is far from the coast, strong winds are unlikely to arrive, but there can be heavy rainfall.
Cyclones form from May to November, and are more frequent at the beginning of the period (May-June), and a little less so at the end (October-November).
. Here are the average temperatures.
January, the coldest month of the year, is generally a very mild month. The average temperature is of
15 °C, with a minimum of
8.5 °C and a maximum of
21.4 °C.
On the coldest nights of the month, the temperature usually drops to around
2.5 °C. However, it dropped to
-1 °C in January 2006.
On the warmest days of the month, the temperature usually reaches around
27 °C. However, it reached
31 °C in January 2019.
Precipitation amounts to
21.2 mm, distributed over 2 days.
The day lasts on average 10 hours and 35 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 76% of the time.
The average humidity is 41%.
The average wind speed is of
7.5 kph.
February is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
17.6 °C, with a minimum of
11.1 °C and a maximum of
24.2 °C.
On the coldest nights of the month, the temperature usually drops to around
3.5 °C. However, it dropped to
-1 °C in February 2008.
On the warmest days of the month, the temperature usually reaches around
30.5 °C. However, it reached
37 °C in February 2009.
Precipitation amounts to
19.2 mm, distributed over 2 days.
The day lasts on average 11 hours and 10 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 75% of the time.
The average humidity is 35%.
The average wind speed is of
8.3 kph.
March is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
22 °C, with a minimum of
15.2 °C and a maximum of
28.8 °C.
On the coldest nights of the month, the temperature usually drops to around
9.5 °C. However, it dropped to
4.9 °C in March 2015.
On the warmest days of the month, the temperature usually reaches around
34.5 °C. However, it reached
40 °C in March 1993.
Precipitation amounts to
18.9 mm, distributed over 3 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 69% of the time.
The average humidity is 32%. Hence, the air is normally dry.
The average wind speed is of
8.9 kph.
April is generally a very hot month. However, there are remarkable differences between night and day. The average temperature is of
28 °C, with a minimum of
20.6 °C and a maximum of
35.4 °C.
On the coldest nights of the month, the temperature usually drops to around
15 °C. However, it dropped to
9.8 °C in April 1992.
On the warmest days of the month, the temperature usually reaches around
40 °C. However, it reached
43.2 °C in April 2002.
Precipitation amounts to only
5.8 mm, and all occurs in one day.
The day lasts on average 12 hours and 50 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 23%. Hence, the air is normally dry.
The average wind speed is of
10 kph.
May is generally a scorchingly hot month. However, there are remarkable differences between night and day. The average temperature is of
33.4 °C, with a minimum of
25.9 °C and a maximum of
41 °C.
On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
13.3 °C in May 1995.
On the warmest days of the month, the temperature usually reaches around
44.5 °C. However, it reached
47.7 °C in May 2017.
Precipitation amounts to only
1.8 mm, distributed over 0 days.
The day lasts on average 13 hours and 30 minutes.
There are on average 10.5 hours of sunshine per day. So, the sun shines 76% of the time.
The average humidity is 17%. Hence, the air is normally dry.
The average wind speed is of
10.6 kph.
June is generally a scorchingly hot month. However, there are remarkable differences between night and day. The average temperature is of
37 °C, with a minimum of
29.7 °C and a maximum of
44.3 °C.
On the coldest nights of the month, the temperature usually drops to around
25 °C. However, it dropped to
21 °C in June 2000.
On the warmest days of the month, the temperature usually reaches around
47.5 °C. However, it reached
49.3 °C in June 2005.
Precipitation amounts to only
4.7 mm, and all occurs in one day.
The day lasts on average 13 hours and 50 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 10.5 hours of sunshine per day. So, the sun shines 75% of the time.
The average humidity is 17%. Hence, the air is normally dry.
The average wind speed is of
11.9 kph.
July, the hottest month of the year, is generally a scorchingly hot month. However, there are remarkable differences between night and day. The average temperature is of
37.8 °C, with a minimum of
31.1 °C and a maximum of
44.4 °C.
On the coldest nights of the month, the temperature usually drops to around
26.5 °C. However, it dropped to
21 °C in July 1993.
On the warmest days of the month, the temperature usually reaches around
47 °C. However, it reached
48.4 °C in July 2006.
Precipitation amounts to only
7.3 mm, and all occurs in one day.
The day lasts on average 13 hours and 40 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 70% of the time.
The average humidity is 21%. Hence, the air is normally dry.
The average wind speed is of
12.3 kph.
August is generally a scorchingly hot month. However, there are remarkable differences between night and day. The average temperature is of
36.2 °C, with a minimum of
29.2 °C and a maximum of
43.3 °C.
On the coldest nights of the month, the temperature usually drops to around
24.5 °C. However, it dropped to
21 °C in August 2000.
On the warmest days of the month, the temperature usually reaches around
46 °C. However, it reached
47.8 °C in August 2019.
Precipitation amounts to only
5.1 mm, and all occurs in one day.
The day lasts on average 13 hours and 5 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 75% of the time.
The average humidity is 18%. Hence, the air is normally dry.
The average wind speed is of
11.8 kph.
September is generally a scorchingly hot month. However, there are remarkable differences between night and day. The average temperature is of
33.1 °C, with a minimum of
25.6 °C and a maximum of
40.6 °C.
On the coldest nights of the month, the temperature usually drops to around
21.5 °C. However, it dropped to
17.2 °C in September 1991.
On the warmest days of the month, the temperature usually reaches around
43.5 °C. However, it reached
46.8 °C in September 2001.
Precipitation amounts to only
0.8 mm, distributed over 0 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 83% of the time.
The average humidity is 17%. Hence, the air is normally dry.
The average wind speed is of
10.4 kph.
October is generally a very hot month. However, there are remarkable differences between night and day. The average temperature is of
28 °C, with a minimum of
20.4 °C and a maximum of
35.5 °C.
On the coldest nights of the month, the temperature usually drops to around
15 °C. However, it dropped to
8 °C in October 1992.
On the warmest days of the month, the temperature usually reaches around
39.5 °C. However, it reached
41.6 °C in October 2013.
Precipitation amounts to only
3.6 mm, distributed over 0 days.
The day lasts on average 11 hours and 30 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 87% of the time.
The average humidity is 20%. Hence, the air is normally dry.
The average wind speed is of
8.4 kph.
November is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
21.5 °C, with a minimum of
14.3 °C and a maximum of
28.7 °C.
On the coldest nights of the month, the temperature usually drops to around
8 °C. However, it dropped to
2.5 °C in November 2003.
On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
38 °C in November 1998.
Precipitation amounts to only
2.7 mm, distributed over 0 days.
The day lasts on average 10 hours and 50 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 86% of the time.
The average humidity is 27%. Hence, the air is normally dry.
The average wind speed is of
7.4 kph.
December is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
16.6 °C, with a minimum of
9.7 °C and a maximum of
23.6 °C.
On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
-3.3 °C in December 1994.
On the warmest days of the month, the temperature usually reaches around
28.5 °C. However, it reached
33.2 °C in December 2016.
Precipitation amounts to
12.8 mm, and all occurs in one day.
The day lasts on average 10 hours and 30 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 8.5 hours of sunshine per day. So, the sun shines 80% of the time.
The average humidity is 35%. Hence, the air is normally dry.
The average wind speed is of
7 kph.