The website of the BBC's five day weather forecast predicts very hot temperatures for Tunis over the next few days:
Sunday, 10th July 44°C/ 111°F
Monday, 11th July 40°C/ 104°F
Tuesday, 12th July 39°C/ 102°F
Wednesday, 13th July 40°C/ 104°F
Thursday, 14th July 35°C/ 95°F
This happens every year around this time. It feels like someone has turned up the temperature dial for Tunis. The intense heat can best be described as like opening the door of a furnace oven. The best precaution for hot weather is to avoid getting dehydrated and to drink at least two litres of water a day. Also it is advisable to stay out of the sun between 10am and 4pm when the sun's rays are the strongest and to wear a high factor sun cream, a sun hat and sunglasses.