Turkish authorities built a fifth campsite on June 14 ready for another influx of Syrian refugees as their numbers rose above 8,538.
Some of the tent camps were already full although they were extended on June 13.
Refugees who have fled Syria face anxiety and boredom as they wait around for shelter. Thousands of others are living rough in rural areas just inside Syria under bad conditions.
A night of heavy rainstorms worsened the condition of the thousands of Syrians sheltering in the hills within sight of the Turkish border, hoping to escape the advance of Syrian forces towards them.
Families on Tuesday tried to dry rain-sodden blankets by hanging them on tree branches, children washed in rain water, and people lay under plastic sheets.