The delta experiences its hottest temperatures in July and August , averaging 30 Â C , with a maximum of around 48 Â C. Winter temperatures are normally in the range of 5 Â to 10 Â C. The Nile Delta region becomes quite humid during the summer months . The delta experiences its hottest temperatures in July and August , averaging 30 Â C , with a maximum of around 48 Â C. Winter temperatures are normally in the range of 10 Â to 19 Â C. With cooler temperatures and some rain , the Nile Delta region becomes quite humid during the winter months .