Bangkok, known to be the hottest city in the world, is located 14-degrees from the Equator and is sunny almost every day of the year. The temperatures are over 30-degrees Celsius or 86-degrees Fahrenheit. So summer is definitely not the best time to visit Bangkok. The best time to visit Bangkok would be winters when it is relatively cooler to roam around the city and explore its attractions.
If you are wondering when is the best time to visit Bangkok to soak up its sun and relax on its stunning beaches; Winter(November to February) is the right pick!