Climate Bolan
Bolan district incorporates all kinds of weather types. The hilly areas are mild in summer and severe cold with snow in winter. Because of its low altitude, the plain area is extremely hot and humid in summer. In winter the climate on the plain area is pleasant. Day and night temperatures vary substantially. Dust storms are common in the plain area in the months of June, July and August.
According to the Agricultural Department, dividing the province into five ecological zones based on altitude, the Bolan district falls in the first category with an altitude from 625 mt. to 1250 mt. above sea level.
Except Mach sub-division, where the average rainfall is higher, the rest of the area gets scanty rainfall. Storms may develop during winter when it snows on mountains. The total annual rainfall of Bolan district ranges from 175 - 325 mm in the period 1992 - 1995, with an annual mean of 210 mm during that period.
Average Monthly Rain Fall (in mm) over the period 1992 - 1995
|
J |
F |
M |
A |
M |
J |
J |
A |
S |
O |
N |
D |
Total |
|
31.1 |
28.0 |
25.0 |
11.0 |
7.3 |
10.0 |
31.0 |
32.0 |
9.0 |
7.0 |
3.5 |
15.0 |
209.9 |
Source: Sibi Meteorological Office
Mean Max and Min Temperature ( in °C)
|
J |
F |
M |
A |
M |
J |
J |
A |
S |
O |
N |
D |
|
22 |
30 |
39 |
44 |
54 |
55 |
50 |
45 |
40 |
38 |
39 |
32 |
|
9 |
12 |
15 |
15 |
17 |
20 |
19 |
19 |
15 |
13 |
12 |
9 |
Source: Sibi Meteorological Office
The Bolan plain area is traditionally known as the hottest area in Balochistan. A saying from Ross Bell's diary says, "Oh God, when Thou created Sibi and Dhadar, then why Thou created Hell!" In hot summer months a large part of the population migrates to the hilly areas. According to the weather station in Balochistan the maximum temperature can go up to 54 °C, while in some areas the temperature can drop as far as minus 17°C in winter, recorded from 1992 to 1995. There is a great temperature variation in the district, as some areas (Kolpur) are at high altitude, where minimum temperature can drop to minus 17 °C.