Altcoins Season To Start in October 2025: Key Signals Analysts Are Watching

Altcoin markets are flashing green as analysts spot critical indicators pointing toward an October 2025 breakout.

Market Momentum Builds

Trading volumes surge while institutional money quietly positions itself in alternative cryptocurrencies. The smart money knows when to pivot from Bitcoin dominance to altcoin opportunities.

Technical Signals Converge

Historical patterns align with current market data, suggesting we're approaching the perfect storm for altcoin appreciation. Seasoned traders are watching these metrics like hawks.

Timing the Entry Point

October's seasonal trends combined with macroeconomic factors create what some are calling the ideal entry window. Because nothing says 'calculated risk' like following the herd into volatile digital assets.

The countdown begins—will you be positioned when the floodgates open?

October 1, 2025, The crypto market enters a very bullish month of the calendar with an average return of 21%. Bitcoin is holding above $116,000, and Ethereum trades near $4,301, showing strong support. 

But all eyes are on altcoins, as analysts spot early signs of a potential breakout that could trigger the start of a new altcoin season.

Signs Altcoin Season is Starting

Despite BTC and ETH stability, analysts point to key signs suggesting altcoins are about to shine. According to the prominent crypto expert, Ito Shimotsuma, BTC dominance has dropped below 59%, indicating that capital is gradually rotating out of Bitcoin into altcoins. 

In the meantime, Google searches for altcoins jumped 40–50% in the last week of September, while the Altcoin Season Index hit 67.

Shimotsuma also pointed out that the altcoin market cap has been in its longest accumulation phase ever, even longer than the 2017 and 2021 cycles. Historically, such build-ups lead to strong rallies with the Q4 beginning, a season often bullish for altcoins.

Historical patterns, Hints Altcoin Rally 

Supporting the bullish analysis, another analyst, Stockmoney Lizards, points to a four-year falling wedge in the TOTAL3/BTC chart, a long-term structure that tends to resolve with explosive upside.

Analyst says that even if BTC moves sideways or climbs moderately, liquidity is likely to rotate into altcoins, triggering a rapid rally once the wedge breaks. 

This pattern mirrors what happened with BTC/USD between 2020 and 2022, where a similar wedge structure led to a major bull leg.

Altcoin Season Could Be Here

Altcoin season in October 2025 is flashing strong signals, bringing both big opportunities and caution. Whale activity is fueling sharp moves, with Aster (+40% weekly), Hyperliquid, and XPL gaining heavy attention from new listings, derivatives trading, and pre-market buzz.

On top of it, if bitcoin dominance reverses or ETF approvals accelerate, altcoin season could ignite rapidly.