Singapore is the smallest country in Asia, but you’ll never know that when visiting this awesome city. This city will knock you off your feet, whether it is the famous sights, the food or the nature you’re visiting Singapore for.
If you want to stay in Singapore for 90 days or less, you do not need a visa (unless you are from one of these countries). You are however obligated to carry a passport that is still valid for at least 6 months when you leave Thailand, with at least one empty visa page. Officially you must also be able to present a return ticket or a ticket to your next destination, but this is not often checked.
For more information, you can contact the Singapore embassy or consulate in your country.
If you have visited (or transferred in) a so-called high-risk country for yellow fever, you’ll need a vaccine for it. Depending on where you are going and what you are going to do, you can get a vaccine for tetanus, hepatitis B, Rabies, Japanese encephalitis, TB and/or yellow fever. There are plenty of mosquitoes around, they can transmit other diseases for which there are no vaccinations or medicines. So where you can, make sure to protect yourself against them. Check out the recommendations.