You can check online to see whether or not you need an entry visa for Bahrain.
We recommend you to apply for your visa online and share your application number with
Six Month Validity Passport Rule
As a general rule, passports should have at least six months of validity when traveling internationally. Most countries will not permit a traveler to enter their country unless their passport is set to expire at least six months after the final day of travel.
If you require a visa, you will need to apply for one at least six weeks before you travel.
We can provide you with an invitation letter upon request after you have registered for MENOG 20.
This list of Bahraini Embassies can help you applying for a visa.