When preparing for a Mount Batur sunrise trek, it's important to wear comfortable clothing suitable for hiking. The temperature can be cooler at higher altitudes, especially during the early morning hours. Wearing layers allows you to adjust your clothing as needed. Choose footwear with good traction and ankle support to navigate uneven terrain. Hiking boots or trail shoes are recommended. Protect yourself from the sun's rays with a hat and sunglasses. Sunscreen is also essential.