The main signals for determining the arrival of the alt season include:
These signals usually do not appear alone, but rather change simultaneously with multiple indicators, forming a relatively strong trend confirmation.
From the performance in August 2025, the conditions for alt season have gradually matured. Bitcoin’s price has stabilized at a high level, ETH has broken through an important threshold, and several medium-sized projects have surged significantly in a short period. The capital flow data indicates that investors are increasing their allocation to altcoins, which is also one of the typical characteristics of alt season.
In addition, the number of active addresses on the chain and the number of transactions have significantly increased, with many emerging tracks such as AI + blockchain, Layer2, and RWA tokenization becoming hotspots for capital pursuit.
Since August, some popular coins have seen significant increases in value, such as Fetch.ai, Akash Network, and Ethena, which have risen over 30% in a short period. Established public chains like Polkadot and Avalanche have also performed strongly. Funding flow data further shows that the trading volume growth rate of small-cap coins is significantly faster than that of large-cap coins, indicating that short-term opportunities are more concentrated in small-cap projects.
The trading pairs of altcoins on exchanges have seen a surge in activity, especially on major global platforms, where the launch of new coins is often accompanied by a multiple increase in trading volume, further boosting market enthusiasm.
For investors who are new to the market, the following types of coins can be prioritized:
When choosing, one should consider market capitalization, liquidity, technological development roadmap, and community activity, avoiding blindly following trends.