ETH and SOL To Lead September’s Altcoin Season

The crypto market is gearing up for an altcoin season, bucking the historical bearish trend that often defines September. While Bitcoin dominance dips below 60%, major altcoins like Ethereum and Solana are poised to lead the potential rally.

Altcoin Season Ahead?

According to a recent X post shared by analyst Carl Moon, the current decline in Bitcoin dominance signals a potential altcoin season. A chart analysis from early June to late August 2025 reveals a steady erosion of Bitcoin's dominance over this period.

Illustrating a chart from early June to late August 2025, the analyst highlights a general downward trend in BTC’s supremacy over this period. Throughout August, BTC dominance saw fluctuations between 55% and 57% before dipping to nearly 54% by month's end. This indicates that an altcoin season is imminent.

This prediction comes amid concerns surrounding the notion of “Redtember.” Usually, September is a bearish month for cryptocurrencies as historical patterns highlight severe losses for major tokens. As Coin Gabbar reported, Bitcoin and Ethereum have historically been among the biggest losers during past Septembers.

However, as per the latest predictions, altcoins are expected to defy the historical trend and are poised to exhibit a major bull run this September.

Ethereum and Solana to Lead This Rally

Notably, Eneko Knorr, CEO and founder of Stabolut, suggests that conditions are ripe for a potential altcoin season, but cautions that it's not a certainty. According to him, the stage is set for an “altseason.” He bases his prediction on the traditional pattern of money flowing from Bitcoin into major altcoins during this period.

He also noted that Ethereum's recent surge to an all-time high underscores the beginning of this sentiment shift. He added,

That said, the whole space is on much firmer ground than in past cycles. With the spot ETFs, banks getting involved, and real adoption happening, there’s a nice tailwind giving everything a lift.

Further highlighting the possible dominance of Ether and Solana, Knor argued that the two cryptocurrencies are poised to lead the altcoin season. While ETH remains a magnet for institutional investment, SOL has solidified its position as a leading Layer-1 contender. He noted,

Altcoins look poised for a strong September. Ethereum remains the top choice for institutional capital, as most tokenization activity is unfolding on its platform. A powerful magnet for long-term capital. When it comes to the ‘Layer 1 wars,’ Solana has pretty much won the silver medal. It’s fast, the ecosystem is buzzing, and it’s captured the attention of both developers and users. It’s become a must-have for anyone serious about this space.