September to December or March to June are probably thebest times to visitAlgeria because the days are warm and the evenings coold down. In winter it tends to be mild and wet in the northern region, and daytime temperatures in the Sahara region rarely fall below 25 degrees Celsius. However, nights in the Sahara can be very cold.
Algeria’s coastal zone and northern mountains have a typical Mediterranean climate, with hot dry summers and mild rainy winters. Algiers, for example, has afternoon temperatures in July of 83 degrees Fahrenheit (28 degrees Celsius) which drop to about 70 degrees Fahrenheit (21 degrees Celsius) at night. In January, day temperatures range between 59 and 49 degrees Fahrenheit (15 and 9 degrees Celsius).
Summer in the Sahara can get blisteringly warm. Rainfall ranges from over 1000mm per year in the northern mountains and some regions in the Sahara receive no rain. Rains are also irregular - in the Tademait region, three years may pass without rainfall and in the Ahaggar plateau, as many as five.
Summer is a great time to visit the beaches if you are looking for a vacation along the coast.