In Algeria, the largest African country, there are three types of climate: the mild Mediterranean climate of the coast (zone 1 on the map), the transitional climate of the northern hills and mountains (zone 2), which is a little more continental and moderately rainy, and finally, the desert climate of the vast area occupied by the Sahara (zone 3).

Index


The coast



In the thin coastal strip, the climate is typically Mediterranean, with mild, rainy winters and hot, sunny summers. The rains are scarcer in the western part (see Oran), where they range between 330 and 400 millimeters (13 and 16 inches) per year; consequently, the landscape here is more arid. In the central and eastern parts (see Algiers, Annaba), the rains are more abundant, in fact they range between 600 and 800 mm (23.5 and 31.5 in). Most of the rains occur between October and April.
By contrast, the temperatures on the coast are rather uniform: the daily average is around 11/12 °C (52/53.5 °F) in January and around 25/26 °C (77/79 °F) in August (which is, albeit slightly, the warmest month). Summer is sunny, with fairly high humidity, but also with the breeze blowing from the sea.
Sometimes, a hot wind coming from the desert, called Chili, can blow: it reaches the coast after climbing the mountains, and it is able to cause a sudden drop in relative humidity and to bring sand and dust; this wind is more frequent in spring and autumn.

Algiers

Algiers, the capital, is located in the central part of the coast. In winter, it is cold on clear nights, especially in the southern suburbs (which are further from the sea), while the days are usually mild. In summer, the weather is usually hot and sunny, with the breeze blowing from the sea.
Here are the average temperatures.
Algiers - Average temperatures
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Min (°C)6679121619201814107
Max (°C)171719212428313230262118
Min (°F)434345485461666864575045
Max (°F)636366707582889086797064

Precipitation totals 600 mm (23.5 in) per year, and follows the typical Mediterranean pattern: the wettest period is from November to January, while it rains very rarely in summer. Here is the average precipitation.
Algiers - Average precipitation
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Prec.(mm)807555604095830609090600
Prec.(in)3.132.22.41.60.40.20.31.22.43.53.523.6
Days1111109732359111292

In Algiers, the sun shines regularly in summer, while in the other seasons, there may be sunny days, but also cloudy and rainy days. Here are the average sunshine hours per day.
Algiers - Sunshine
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Hours4678101011109655

The sea is warm enough for swimming from July to September, while in June, it's still a bit cool. In the eastern part of the coast (see Annaba), the sea is a bit warmer than in the western part (see Oran), which is located near the Alborán Sea, where the Mediterranean water mixes with the Atlantic water.
Here is the average water temperature in Algiers, located in the central part.
Algiers - Sea temperature
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Temp (°C)151515161821242524221917
Temp (°F)595959616470757775726663

Algiers

Mountainous areas



In the north of Algeria, we find a mountainous belt parallel to the coast, which divides it from the desert. There are two mountain ranges, Tell Atlas and Saharan Atlas; the former is wetter because it's more often affected by humid winds from the sea, and in winter it's snowy, so much so that there are a few winter resorts (see Chréa, Tikjda) where you can go skiing, especially from December to March.
Between the two ranges, we find a plateau, with several cities located between 1,000 and 1,300 meters (3,300 and 4,200 feet). Here, the climate is slightly continental, with cold winters and hot summers.

Sétif

For example, in Sétif, at 1,000 meters (3,300 feet) above sea level, the daily average ranges from 5.5 °C (42 °F) in January to 26.5 °C (79 °F) in July. So, the summer here is as hot as on the coast, but the humidity is lower, in addition, the temperature is higher during the day and lower at night. Winter is rather cold, especially when cold air masses arrive from Europe, which can at times bring even snow and frost. Here are the average temperatures.
Sétif - Average temperatures
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Min (°C)224711161920151163
Max (°C)91114172329333327211510
Min (°F)363639455261666859524337
Max (°F)485257637384919181705950

In Sétif, precipitation amounts to 400 mm (16 in) per year and follows the Mediterranean pattern, ie with a maximum in winter and a minimum in summer, when, however, some rare thunderstorms are possible. Here is the average precipitation.
Sétif - Average precipitation
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Prec.(mm)403535404525101540353550400
Prec.(in)1.61.41.41.61.810.40.61.61.41.4215.7
Days111099863588101298

A similar climate is found in other towns of the area, with a few variations due to altitude and slope exposure, such as Batna, 1,000 meters (3,300 feet) above sea level; Constantine, 600 meters (2,000 feet), which is a little more rainy and receives 560 mm (22 in) per year; and Tebessa, 800 meters (2,600 feet), which is more arid, since it receives only 350 mm (14 in) of rain.

Snow in Setif

Saharan Desert



In the vast Algerian desert, the climate is hot and dry during the long summer months, and it's also progressively hotter and drier as you proceed towards the south. In winter, the warmest area is the far south, where the temperature during the day is around 25/27 °C (77/80 °F), while the hottest area in summer lies between the 24th and the 30th parallel, since the far south is reached by the extreme offshoot of the African monsoon, which bring a bit of cloudiness and occasional downpours. The rains are very rare in the whole area, below 100 mm (4 in) per year, and often below 50 mm (2 in); they occur in the form of downpours, and are more likely in winter in the north, and as mentioned, in summer in the far south.
The sky in the desert is almost always clear, and this favors a wide temperature range between night and day, which is often around 20 degrees Celsius (35 degrees Fahrenheit). During winter, the temperature can drop below freezing at night, albeit slightly, while the days remain mild.
In the desert, sand storms can occur at any time, especially in the vast areas covered with sand dunes, called ergs.

Biskra

In the northern part of the desert, the average maximum temperature in July and August is around 40 °C (104 °F) in Biskra, the "Gateway of the Sahara", located just south of the Saharan Atlas, and in Touggourt. However, heat records, which are set during warm air invasions from the south, are around 48 °C (118/125 °F), so they are similar to those of the central-southern area. Here are the average temperatures in Biskra.
Biskra - Average temperatures
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Min (°C)791115192427272318128
Max (°C)171923263137404034282218
Min (°F)454852596675818173645446
Max (°F)63667379889910410493827264

In Biskra, rainfall amounts to 130 mm (5 in) per year. Here is the average rainfall.
Biskra - Average precipitation
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Prec.(mm)17101413115261011209129
Prec.(in)0.70.40.60.50.40.20.10.20.40.40.80.45.1
Days43433212344436

In the south-east of the country, in the middle of the desert, there is a mountain massif, called Hoggar, whose highest peak is Mount Tahat, 2,908 meters (9,541 feet) high. Here, the rains, still at desert-like levels, are slightly more frequent than in the surrounding areas. North of Hoggar, but still in a mountainous region, we find the Tassili N'Ajjer National Park, a rocky desert, with deep canyons and lunar landscapes, but also some verdant oasis.

Tamanrasset

The city of Tamanrasset, 1,400 meters (4,600 feet) above sea level, has a very salubrious climate, dry and sunny all year round, and tempered by the altitude: in winter, it can get cold at night, while the days remain mild, whereas in summer, the heat is intense, but not as intense as at sea level, in fact, average highs are around 35 °C (95 °F), with possible peaks around 40 °C (104 °F).
Tamanrasset - Average temperatures
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Min (°C)571115202323232116106
Max (°C)202225303435353533302521
Min (°F)414552596873737370615043
Max (°F)687277869395959591867770

Raifall in Tamanrasset, rare and sporadic, is slightly above 50 mm (2 in) per year. In the lowlands of this southern part of the desert, it is even scarcer. Here is the average precipitation in Tamanrasset.
Tamanrasset - Average precipitation
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Prec.(mm)22525758871254
Prec.(in)0.10.10.20.10.20.30.20.30.30.300.12.1
Days11112323320117

The situation is quite different at low altitudes: the average maximum temperature in July is around 45 °C (113 °F) in the oases of the south-central like Timimoun, In Salah, Aoulef and Reggane, and the highest records are around 50/52 °C (122/125 °F). In summer, this is one of the hottest regions in the world.

In Salah

In Salah is an oasis located in the center of the country, in the province of Tamanrasset, at 290 meters (950 feet) of altitude. Here are the average temperatures.
In Salah - Average temperatures
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Min (°C)681116202628272518117
Max (°C)202328333743454340342621
Min (°F)434652616879828177645245
Max (°F)6873829199109113109104937970

In In Salah, the sun shines all year round.
In Salah - Sunshine
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Hours99111111121212111098

Owing to the aforementioned marginal influence of the African monsoon, the amount of sunshine in summer slightly decreases in the south and in the Hoggar Massif (where there are 10 hours of sunshine per day, compared with 12 hours in the central and northern regions).

Tassili N'Ajjer

Best Time



The best time to visit Algiers and the coastal cities, but also those of the mountainous belt, is spring, and in particular the months of April and May. Autumn is also a good season, especially the month of October, which, however, is more rainy. You can then choose September, which, however, can still be hot during the day.
If you want to visit the desert, the best season is winter, from December to February, especially in the southern part: it is true that at night it is cold, but during the day the sun shines and the temperature is pleasant. In the northern part of the desert (see Biskra), which in winter is more often cold, you may prefer the months of March and November.
You can go to the beach from mid-May to October, although, as we mentioned, the sea becomes warm enough for swimming in July, and given that the rains may start by October, the best time for a beach holiday runs from July to September.

What to pack in the suitcase



In winter: for Algiers and the coast, bring spring/autumn clothes, a jacket and a sweater, and a raincoat or umbrella. For the hilly and mountainous areas of the north, bring warm clothes, such as a down jacket, and a hat. For the desert, spring/autumn clothes, being ready to remove the outer layer during the day, but a also sweater and a warm jacket for the evening and early morning, and a scarf for the sand.

In summer: for Algiers and the coast, and the northern plateau as well, bring summer clothing, a light sweatshirt for the evening, and possibly a scarf for the wind-borne sand and dust. For the desert, loose-fitting, light-colored clothing, light and long shirts and pants of natural fibers (cotton, linen), a wide-brimmed hat, a light scarf, sunglasses (even graduated instead of contact lenses), comfortable and breathable shoes. For the mountains or for nights in a tent, you can bring a sweatshirt for the evening, and hiking boots or sandals.
It's better for women to avoid shorts and miniskirts, especially in rural and non-tourist areas.

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