Asu is a small island located just off the coast of Nias, Indonesia, and it's known for its remote and rugged beauty. The island is about 65 km (43 mi) and a 5-hour boat ride from the southern town of Teluk Dalam. While it's a bit of a trek to get to, it’s worth it for those looking for a more off-the-beaten-path surf experience. The area offers long, sweeping left-hand waves that break over a shallow reef, providing an exciting challenge for surfers who are up for it.

The best conditions for surfing at Asu come from a southwest swell, but it can also handle swells from the south and west. Waves can reach sizes up to 3 ft (about 0.9 m) and break over dead coral, which makes for a unique ride. The waves are primarily lefts, and speed is key when navigating through some of the pinching sections, especially as the wave can get heavy at size. It's crucial to be cautious of the impressively long and shallow reef. The waves can work at any tide—low, mid, or high—which is a bonus. This spot is recommended for expert surfers due to the challenging conditions, including the notorious “Nuclear Zone” reef at the shallow end.

Getting in and out of the water can be tricky due to the coral scramble around the land camps, so make sure to bring booties to protect your feet. The east wind is preferable for the surfing conditions, which can enhance your experience on the waves. Overall, Asu offers a unique surf experience that suits those looking for adventure and are equipped to handle the intensity of the waves.