Cryptocurrency: Top 3 Trending Altcoins To Keep An Eye On This June. The crypto market is entering the final month of Q2 2025, and investors are once again asking which crypto altcoins should be the focus. To answer this, BeInCrypto has identified potential winners. With new altcoins coming and going, the top 3 pedestals are always up and changing, giving users a chance to experiment with the changing concepts. Here’s our latest look at the altcoins making waves.

Top 3 Trending Altcoins to Watch This June

Staying ahead in the volatile crypto market requires constant vigilance. This June, keep an eye on these three altcoins, each offering unique potential and risk-reward profiles. These are not just any altcoins; they represent emerging trends and technologies within the cryptocurrency space. Here are the relatively new altcoins in brief:

1. Ondo (ONDO)

Ondo is one of the promising altcoins for the 2025 crypto bull run. It has hit a new all-time high of $1.82 recently. Its innovative approach and recent market performance make it a key contender.

2. Sui (SUI)

Despite that setback, SUI has recently rebounded and is now inching closer to the $4 mark, signaling renewed bullish interest. However, that’s not the only reason SUI is one of the altcoins to watch. Its resurgence demonstrates resilience and potential for further growth.

3. Cardano, Yeti Ouro (Hypothetical Example)

Keeping this in mind, three altcoins that you should look out for this summer are: Cardano, Sui, and Yeti Ouro. These three offer complementary risk‑reward profiles. While Sui offers significant potential gains, Cardano provides a more established and stable foundation. Yeti Ouro (a hypothetical example) is a new project which aims to offer a tokenized carbon credit with innovative smart contracts.