The Egyptian Meteorological Authority (EMA) predicts hot and humid weather to prevail in Cairo, Lower Egypt, and North Coast, during daylight hours on Sunday.
Extremely hot weather is also expected to hit South Sinai and the South of the country.
Wind will be active across the country.
EMA warned that the conditions of the Mediterranean Sea won't be suitable for any maritime activities.
The Mediterranean Sea will experience turbulent waves, and will be over 4 meters in height with northwest surface winds.
Waves in the Red Sea will be moderate, ranging between 1.5 and 2.25 meters with northwest surface winds.
Meanwhile, moderate weather is predicted to prevail across the country, at night.
Temperatures predicted for the following cities are: 35°C in Cairo, 30°C in Alexandria, 30°C in Matruh, 40°C in Sohag, and 43°C in Aswan.