Have you ever heard of "khamseen"? This is the name for sand storms that engulf the deserts of the Middle East with dust and grit so that even the skies overhead are barely visible and already hot temperatures increase 10 degrees. Normally people prefer to stay away from the raging sands, though the adventurous craving a new experience visit the desert during khamseen season just for that reason. In Jordan, this period lasts for a few days somewhere between May and June. Just wear appropriate clothes to protect yourself from the extreme sand winds.