The climate of Tlemcen is transitional Mediterranean, with some continental characteristics, and semi-arid. The winter is quite cold, while the summer is very hot. In addition, in winter, the city is exposed to cold spells and snowfalls.
The city is located in the northwest of Morocco, at an altitude of 800 meters (2,600 feet). The meteorological station is located 250 meters (820 ft), near Zenata, so it provides temperatures a few degrees higher than those recorded in the city (actually, these data do not give a correct indication of the climate of the city).
. Here are the average temperatures.
January, the coldest month of the year, is generally a mild month. The average temperature is of
11.1 °C, with a minimum of
5.3 °C and a maximum of
16.9 °C.

On the coldest nights of the month, the temperature usually drops to around
1 °C. However, it dropped to
-2.1 °C in January 1993.

On the warmest days of the month, the temperature usually reaches around
23.5 °C. However, it reached
28 °C in January 2010.

Precipitation amounts to
45 mm, distributed over 8 days.
The day lasts on average 10 hours and 5 minutes.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
7.7 kph.
February is generally a mild month. The average temperature is of
11.9 °C, with a minimum of
6 °C and a maximum of
17.7 °C.

On the coldest nights of the month, the temperature usually drops to around
1.5 °C. However, it dropped to
-2.9 °C in February 2005.

On the warmest days of the month, the temperature usually reaches around
24 °C. However, it reached
33.5 °C in February 2010.

Precipitation amounts to
35 mm, distributed over 7 days.
The day lasts on average 11 hours and 0 minutes.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
8 kph.
March is generally a mild month. The average temperature is of
14 °C, with a minimum of
7.8 °C and a maximum of
20.1 °C.

On the coldest nights of the month, the temperature usually drops to around
2.5 °C. However, it dropped to
-4.3 °C in March 2012.

On the warmest days of the month, the temperature usually reaches around
28 °C. However, it reached
35.7 °C in March 2001.

Precipitation amounts to
35 mm, distributed over 7 days.
The day lasts on average 12 hours and 0 minutes.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
8 kph.
April is generally a very mild month. The average temperature is of
15.9 °C, with a minimum of
9.5 °C and a maximum of
22.3 °C.

On the coldest nights of the month, the temperature usually drops to around
4.5 °C. However, it dropped to
0 °C in April 1994.

On the warmest days of the month, the temperature usually reaches around
30 °C. However, it reached
35.7 °C in April 2015.

Precipitation amounts to
35 mm, distributed over 7 days.
The day lasts on average 13 hours and 5 minutes.
The average humidity is 68%.
The average wind speed is of
8.4 kph.
May is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
19.2 °C, with a minimum of
12.7 °C and a maximum of
25.8 °C.

On the coldest nights of the month, the temperature usually drops to around
7.5 °C. However, it dropped to
3.6 °C in May 1992.

On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
42.1 °C in May 2006.

Precipitation amounts to
25 mm, distributed over 5 days.
The day lasts on average 14 hours and 0 minutes.
The average humidity is 63%.
The average wind speed is of
8.4 kph.
June is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
23 °C, with a minimum of
16.3 °C and a maximum of
29.6 °C.

On the coldest nights of the month, the temperature usually drops to around
11.5 °C. However, it dropped to
8 °C in June 2001.

On the warmest days of the month, the temperature usually reaches around
36.5 °C. However, it reached
41.5 °C in June 2012.

Precipitation amounts to only
5.1 mm, distributed over 2 days.
The day lasts on average 14 hours and 30 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
The average humidity is 59%.
The average wind speed is of
8.6 kph.
July is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
26.3 °C, with a minimum of
19.5 °C and a maximum of
33.2 °C.

On the coldest nights of the month, the temperature usually drops to around
15 °C. However, it dropped to
7.5 °C in July 2007.

On the warmest days of the month, the temperature usually reaches around
40.5 °C. However, it reached
47 °C in July 2009.

Precipitation amounts to only
1.1 mm, and all occurs in one day.
The day lasts on average 14 hours and 10 minutes. So the days are long.
The average humidity is 56%.
The average wind speed is of
8.5 kph.
August, the hottest month of the year, is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
27 °C, with a minimum of
20.3 °C and a maximum of
33.8 °C.

On the coldest nights of the month, the temperature usually drops to around
16 °C. However, it dropped to
11.8 °C in August 1992.

On the warmest days of the month, the temperature usually reaches around
41 °C. However, it reached
46.2 °C in August 2004.

Precipitation amounts to
12.7 mm, distributed over 2 days.
The day lasts on average 13 hours and 25 minutes.
The average humidity is 57%.
The average wind speed is of
8 kph.
September is generally a warm to hot month. The average temperature is of
23.7 °C, with a minimum of
17.4 °C and a maximum of
30 °C.

On the coldest nights of the month, the temperature usually drops to around
12.5 °C. However, it dropped to
9 °C in September 1995.

On the warmest days of the month, the temperature usually reaches around
36.5 °C. However, it reached
41.5 °C in September 2008.

Precipitation amounts to
15 mm, distributed over 4 days.
The day lasts on average 12 hours and 20 minutes.
The average humidity is 64%.
The average wind speed is of
7.2 kph.
October is generally a warm month. The average temperature is of
20.1 °C, with a minimum of
13.8 °C and a maximum of
26.4 °C.

On the coldest nights of the month, the temperature usually drops to around
9 °C. However, it dropped to
0 °C in October 1993.

On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
40.3 °C in October 2006.

Precipitation amounts to
30 mm, distributed over 5 days.
The day lasts on average 11 hours and 20 minutes.
The average humidity is 68%.
The average wind speed is of
6.8 kph.
November is generally a very mild month. The average temperature is of
15.3 °C, with a minimum of
9.5 °C and a maximum of
21 °C.

On the coldest nights of the month, the temperature usually drops to around
4 °C. However, it dropped to
1.5 °C in November 2013.

On the warmest days of the month, the temperature usually reaches around
28.5 °C. However, it reached
32.2 °C in November 2020.

Precipitation amounts to
45 mm, distributed over 7 days.
The day lasts on average 10 hours and 20 minutes.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
7.9 kph.
December is generally a mild month. The average temperature is of
12.3 °C, with a minimum of
6.7 °C and a maximum of
17.8 °C.

On the coldest nights of the month, the temperature usually drops to around
1 °C. However, it dropped to
-1.5 °C in December 2004.

On the warmest days of the month, the temperature usually reaches around
24 °C. However, it reached
30.4 °C in December 2010.

Precipitation amounts to
35 mm, distributed over 7 days.
The day lasts on average 9 hours and 55 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
7.6 kph.