Methodology
42
According to Table 10 and the histogram (Figure 18), the average monthly precipitation shows
an increase in precipitation from September to December, with a drop in precipitation beginning
in February and continuing until August.
3.1.2. Temperature
Temperature is a major factor in determining a region's climate. It determines
evapotranspiration and runoff deficit, plays a part in the development of plant biological
rhythms and helps establish the water balance (DAVIDE, 1956).
Table 11: Average monthly temperatures (Period 2003-2018).
Source : The weather station of the state of Souk-Ahras.
Figure 19: Average monthly temperatures (Period 2003 -2018).
The histogram (Figure 19) shows that the lowest values are measured in December, January
and February, where the coldest month is February (with a temperature of around 7.7°C). On
the other hand, the highest values are found in June, July and August, where the hottest month
is July (with a temperature of around 26.4°C).
Month S
O
N
D
J
F
M
A
M
J
J
A
T (°C) 20,7
18,4
12,5
8 ,7
8,2
7,7
10,4
13,8
17,3
22,2 26,4 26,1