Hassi Messaoud's winters are mild, with temperatures ranging from -2°C to 33°C in January and February, averaging around 13-16°C. Spring brings rising temperatures, reaching averages of 18-24°C by April, before soaring to highs of up to 39°C. The summer months, June to August, are hot, with temperatures consistently above 37°C, peaking at 49°C in July and August. Autumn sees a return to more moderate temperatures, averaging around 17-24°C from September to November, before dropping again in winter.