In Thailand, wearing white is generally considered very appropriate and respectful, but there are nuances depending on the setting. In the intense Thai heat, white and light-colored clothing is the most practical choice for staying cool, and you will see many locals wearing white "linen-style" outfits. However, white is also the color associated with religious devotion and mourning in Buddhist culture; "Mae Chi" (Buddhist nuns) wear all-white robes, and white is the traditional color worn by laypeople during funerals or while participating in meditation retreats at temples. As a tourist, wearing a white t-shirt or dress is perfectly fine, but you should avoid wearing "head-to-toe" white when visiting a funeral or a solemn ceremony unless invited to do so. For temple visits, the color white is actually preferred over vibrant reds or yellows (which can be politically charged), provided your shoulders and knees are covered. Always ensure your white clothing is opaque, as the frequent tropical rain showers can quickly make light fabrics transparent, which would be considered a major breach of Thai modesty and etiquette.