Swimwear is acceptable at private hotel beaches, but tourists should “use common sense in selecting swimwear” for public beaches, a spokesman said.
The authority has also requested that passengers take care when dealing with taxi drivers as many will be fasting while working.
Good etiquette requires people not to drink, eat or smoke in public.
“You can eat and drink in the privacy of your own room but please do not offer food or drink to a Muslim,” the spokesman said.
Safiya Darweesh Al Qubaisi, cultural and handicraft development officer at the tourism authority, said: “One important benefit of fasting is that it helps you to understand the suffering and pain of the poor. It also allows human beings to understand how those who do not have enough money for a meal survive through the day.”