Women tourists are safe in Dahab, however please be cautious.
As a deference to local traditions, even if you will notice a lot of females wearing short skirts and tight t-shirts, please remember that Egypt is a conservative nation and dress accordingly in the city. A bikini is quite acceptable on the beach.
Flirting and simply chit-chat with local males is likely to be perceived quite differently than in the west. Take precautions. Be kind, but don’t invite more people than you need.
Snorkeling along/past the reef may be quite hazardous when it is very windy: powerful underwater currents form, and it is extremely difficult to return to the shallow reef. Always check with a neighboring diving facility to see whether it is safe to snorkel; they will be pleased to assist.
Although drugs, notably marijuana, are accessible in Dahab, they are not legal. Before indulging, carefully consider if you want to face high penalties at best and long jail sentences at worst in Egypt’s infamously filthy prisons.