What wetsuit do you need in Egypt?

The one suit that covers most of the swimming season, for 11 coastal cities in Egypt.

City	Coldest	Warmest	One suit for the season
Alexandria	17.7°C Mar	28.5°C Aug	nothing
Port Said	17.2°C Feb	29.0°C Aug	nothing
Damietta	17.7°C Mar	28.5°C Aug	nothing
Rosetta	17.7°C Feb	28.7°C Aug	nothing
Arīsh	17.9°C Feb	29.7°C Aug	nothing
Marsá Maţrūḩ	17.3°C Mar	27.9°C Aug	nothing
El-Tor	20.9°C Mar	27.9°C Aug	nothing
Abū Qīr	17.7°C Mar	28.5°C Aug	nothing
El Dabaa	17.5°C Mar	28.0°C Aug	nothing
As Sallūm	17.2°C Mar	27.7°C Aug	nothing
Al ‘Alamayn	17.6°C Mar	28.3°C Aug	nothing

Thicknesses above are for swimming. Surfing the same water wants a step more — most of a session is spent sitting still in the wind rather than moving and immersed. Each city page gives both, along with when you need boots, gloves and a hood.

Sea temperature and swimming season in Egypt →

Boots below 14°C, gloves below 12°C, a hood below 10°C. Where the numbers come from