Average weather, temperature, rainfall, sunshine hours
The climate of Birjand is
arid continental (according to the Köppen classification, cold semi-arid or steppe climate - BSk), with relatively cold winters and hot, sunny summers. Precipitation, which is decidedly scarce, occurs mostly from December to April.
Birjand is a city of 203,000 inhabitants located in eastern Iran, in the middle of the desert, in the province of South Khorasan, at almost 33 degrees north latitude and at 1,500 meters (4,900 feet) above sea level. About 130 kilometers (80 miles) to the east is the border with Afghanistan.
Winter, from December to February, is quite cold, with frequent night frosts.
There can be mild periods, with highs of 15 °C (59 °F) or more, but also cold periods, during which snowfalls can occur, generally not abundant given the low level of precipitation. During cold spells, the temperature can drop to -15 °C (5 °F) or below. In January 2008 it dropped to -20 °C (-4 °F).
Summer, from June to August, is very hot, but it is also windy, and the humidity is very low. On the hottest days the temperature can exceed 40 °C (104 °F). In 2024, it reached 43.4 °C (110.1 °F) in July and 44.1 °C (114 °F) in August.
Birjand - Climate data
In Birjand, the
average temperature of the coldest month (January) is of 4.4 °C (39.9 °F), that of the warmest month (July) is of 27.8 °C (82.1 °F). Here are the average temperatures.
Birjand - Average temperatures (1991-2020) Month | Min (°C) | Max (°C) | Mean (°C) | Min (°F) | Max (°F) | Mean (°F) |
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January | -2.6 | 11.4 | 4.4 | 27 | 53 | 39.9 |
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February | 0.2 | 14 | 7.1 | 32 | 57 | 44.8 |
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March | 4.6 | 18.9 | 11.8 | 40 | 66 | 53.2 |
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April | 10 | 25.1 | 17.6 | 50 | 77 | 63.6 |
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May | 14.2 | 30.7 | 22.4 | 58 | 87 | 72.4 |
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June | 18.2 | 35.1 | 26.6 | 65 | 95 | 80 |
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July | 19.9 | 35.8 | 27.8 | 68 | 96 | 82.1 |
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August | 17.1 | 34.4 | 25.8 | 63 | 94 | 78.4 |
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September | 12.4 | 31.8 | 22.1 | 54 | 89 | 71.8 |
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October | 7.5 | 26.5 | 17 | 46 | 80 | 62.6 |
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November | 2.6 | 19.2 | 10.9 | 37 | 67 | 51.6 |
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December | -1.3 | 14.2 | 6.4 | 30 | 58 | 43.6 |
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Year | 8.6 | 24.8 | 16.65 | 47.5 | 76.7 | 62 |
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Precipitation amounts to 150 millimeters (5.9 inches) per year: it is therefore at a desert level. It ranges from 0.1 mm (0 in) in the driest month (July) to 35.5 mm (1.4 in) in the wettest one (March). Here is the average precipitation.
Birjand - Average precipitationMonth | Millimeters | Inches | Days |
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January | 26 | 1 | 4 |
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February | 31 | 1.2 | 5 |
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March | 36 | 1.4 | 5 |
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April | 21 | 0.8 | 4 |
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May | 7 | 0.3 | 1 |
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June | 0 | 0 | 0 |
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July | 0 | 0 | 0 |
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August | 1 | 0 | 0 |
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September | 0 | 0 | 0 |
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October | 3 | 0.1 | 1 |
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November | 8 | 0.3 | 2 |
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December | 17 | 0.7 | 3 |
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Year | 150 | 5.9 | 26 |
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There are on average around 3360
sunshine hours per year. Here are the average hours of sunshine per day.
Birjand - Sunshine hoursMonth | Average | Total |
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January | 6.5 | 210 | February | 7.5 | 205 | March | 7.5 | 230 | April | 8.5 | 250 | May | 10 | 315 | June | 11.5 | 350 | July | 12 | 375 | August | 11.5 | 365 | September | 11 | 325 | October | 9.5 | 295 | November | 7.5 | 230 | December | 7 | 215 | Year | 9.2 | 3360 |
Birjand - Weather by month
Based on the period 1991-2020
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 4.4 °C (40 °F), with a minimum of -2.6 °C (27.3 °F) and a maximum of 11.4 °C (52.5 °F).
On the coldest nights of the month, the temperature usually drops to around -12 °C (10.5 °F).
On the warmest days of the month, the temperature usually reaches around 18.5 °C (65 °F).
Precipitation amounts to 26.2 mm (1 in), distributed over 4 days.
The day lasts on average 10 hours and 20 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 53%.
The average wind speed is 8 kph (5 mph).
February is generally a quite mild month. However, there are remarkable differences between night and day. The average temperature is of 7.1 °C (45 °F), with a minimum of 0.2 °C (32.4 °F) and a maximum of 14 °C (57.2 °F).
On the coldest nights of the month, the temperature usually drops to around -8 °C (17 °F).
On the warmest days of the month, the temperature usually reaches around 21.5 °C (70.5 °F).
Precipitation amounts to 30.8 mm (1.2 in), distributed over 5 days.
The day lasts on average 11 hours and 0 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 66% of the time.
The average humidity is 48%.
The average wind speed is 9 kph (6 mph).
March is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of 11.8 °C (53 °F), with a minimum of 4.6 °C (40.3 °F) and a maximum of 18.9 °C (66 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -3.5 °C (25.5 °F).
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 26 °C (79 °F).
Precipitation amounts to 35.5 mm (1.4 in), distributed over 5 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 39%.
The average wind speed is 10 kph (6 mph).
April is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 17.6 °C (64 °F), with a minimum of 10 °C (50 °F) and a maximum of 25.1 °C (77.2 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 1.5 °C (35 °F).
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 31 °C (88 °F).
Precipitation amounts to 20.6 mm (0.8 in), distributed over 4 days.
The day lasts on average 13 hours and 0 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 32%. Hence, the air is normally dry.
The average wind speed is 10 kph (6 mph).
May is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 22.4 °C (72 °F), with a minimum of 14.2 °C (57.6 °F) and a maximum of 30.7 °C (87.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 8 °C (46.5 °F).
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 35.5 °C (96 °F).
Precipitation amounts to only 7 mm (0.3 in), and all occurs in one day.
The day lasts on average 13 hours and 55 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 24%. Hence, the air is normally dry.
The average wind speed is 11 kph (7 mph).
June is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 26.6 °C (80 °F), with a minimum of 18.2 °C (64.8 °F) and a maximum of 35.1 °C (95.2 °F).
On the coldest nights, the temperature usually drops to around 12.5 °C (54.5 °F).
On the warmest days, the temperature usually reaches around 39.5 °C (103.5 °F).
Precipitation amounts to only 0.5 mm (0 in), distributed over 0 days.
The day lasts on average 14 hours and 20 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 11.5 hours of sunshine per day. So, the sun shines 81% of the time.
The average humidity is 17%. Hence, the air is normally dry.
The average wind speed is 13 kph (8 mph).
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 27.8 °C (82 °F), with a minimum of 19.9 °C (67.8 °F) and a maximum of 35.8 °C (96.4 °F).
On the coldest nights of the month, the temperature usually drops to around 14.5 °C (58 °F).
On the warmest days of the month, the temperature usually reaches around 40 °C (104 °F).
Precipitation amounts to only 0.1 mm (0 in), distributed over 0 days.
The day lasts on average 14 hours and 5 minutes. So the days are long.
There are on average 12 hours of sunshine per day. So, the sun shines 85% of the time.
The average humidity is 19%. Hence, the air is normally dry.
The average wind speed is 15 kph (9 mph).
August is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 25.8 °C (78 °F), with a minimum of 17.1 °C (62.8 °F) and a maximum of 34.4 °C (93.9 °F).
On the coldest nights of the month, the temperature usually drops to around 11.5 °C (52.5 °F).
On the warmest days of the month, the temperature usually reaches around 38.5 °C (101.5 °F).
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
The day lasts on average 13 hours and 20 minutes.
There are on average 11.5 hours of sunshine per day. So, the sun shines 88% of the time.
The average humidity is 18%. Hence, the air is normally dry.
The average wind speed is 13 kph (8 mph).
September is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 22.1 °C (72 °F), with a minimum of 12.4 °C (54.3 °F) and a maximum of 31.8 °C (89.2 °F).
On the coldest nights, the temperature usually drops to around 6.5 °C (44 °F).
On the warmest days, the temperature usually reaches around 36 °C (96.5 °F).
Precipitation amounts to only 0.5 mm (0 in), distributed over 0 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 11 hours of sunshine per day. So, the sun shines 87% of the time.
The average humidity is 18%. Hence, the air is normally dry.
The average wind speed is 10 kph (6 mph).
October is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 17 °C (63 °F), with a minimum of 7.5 °C (45.5 °F) and a maximum of 26.5 °C (79.7 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 1 °C (33.5 °F).
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 31.5 °C (88.5 °F).
Precipitation amounts to only 2.9 mm (0.1 in), and all occurs in one day.
The day lasts on average 11 hours and 20 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 83% of the time.
The average humidity is 25%. Hence, the air is normally dry.
The average wind speed is 8 kph (5 mph).
November is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of 10.9 °C (52 °F), with a minimum of 2.6 °C (36.7 °F) and a maximum of 19.2 °C (66.6 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -5.5 °C (22 °F).
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 26 °C (78.5 °F).
Precipitation amounts to only 7.7 mm (0.3 in), distributed over 2 days.
The day lasts on average 10 hours and 30 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 74% of the time.
The average humidity is 36%.
The average wind speed is 7 kph (4 mph).
December is generally a quite cold month. However, there are remarkable differences between night and day. The average temperature is of 6.4 °C (44 °F), with a minimum of -1.3 °C (29.7 °F) and a maximum of 14.2 °C (57.6 °F).
On the coldest nights of the month, the temperature usually drops to around -9 °C (16 °F).
On the warmest days of the month, the temperature usually reaches around 20 °C (68 °F).
Precipitation amounts to 17.4 mm (0.7 in), distributed over 3 days.
The day lasts on average 10 hours and 0 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 7 hours of sunshine per day. So, the sun shines 70% of the time.
The average humidity is 46%.
The average wind speed is 7 kph (5 mph).