Siwa Oasis in December

October through March offers perfect weather - warm days around 25°C and cool nights that actually require a jacket. December and January see the most visitors, but Siwa never feels crowded. Avoid summer completely. July temperatures hit 45°C, and the desert becomes genuinely dangerous during midday. Even locals stay indoors from noon to 4 PM. Ramadan brings a special atmosphere as the entire oasis observes the fast together. But restaurant hours get unpredictable, and some attractions close early. Spring brings wildflowers to the desert after rare rains - a magical sight if you're lucky.