3 Altcoins That Could Hit All-Time-High by September 2025

September could continue August’s efforts or change direction completely. When it comes to altcoins, what investors are looking forward to the most is a new all-time high (ATH).

So, BeInCrypto analyzed the top three coins that are holding strong and are likely to hit new highs in September.

Ethereum (ETH)

Ethereum is one of the closest altcoins to retesting its all-time high. Currently trading at $4,461, the altcoin is just 11% away from its previous high of $4,956. This proximity shows Ethereum’s resilience and puts it among the top candidates for a breakout this cycle.

Sustained bullish momentum will be crucial for Ethereum to reach new highs. The Relative Strength Index (RSI) shows that bullish momentum remains, although it has almost slipped below the neutral line. If the strength holds, ETH could surpass $5,000 in September and set a new high for the asset.

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If Ethereum loses momentum, the risk of a decline increases. A drop below the neutral 50.0 RSI level would confirm bearish pressure. Such a move could drag ETH below $4,222, opening the door to a drop to $4,000 or lower, significantly weakening the short-term bullish outlook.

XRP

XRP is trading at $2.81, holding support above $2.74 at the time of writing. The altcoin’s ability to reach new highs depends largely on investor sentiment. Market participation will play a Vai in whether XRP maintains its upward momentum or faces renewed selling pressure.

The Ichimoku Cloud indicates that bullish momentum may be building, providing bullish potential for XRP. This technical signal suggests favorable conditions for upward price action. If sustained, the altcoin could rally 29.8% to retest its previous high of $3.66, a level that has not been broken since previous market cycles.

If investors remain cautious, XRP may struggle to hold its current position. A break below $2.74 would expose the Token to further losses. Continued selling pressure could push the price down to $2.54, weakening support levels and invalidating the bullish outlook currently forming for XRP.

TRON (TRX)

TRX remains one of the few cryptocurrencies still within reach of its all-time high despite being 32% off $0.45. TRON ’s recent 60% network fee cut is aimed at attracting more users and investors. This cost-cutting measure could provide the necessary impetus to boost demand and fuel a price recovery.

The network upgrade could Vai as a catalyst for TRX, allowing the altcoin to break through resistance levels at $0.34 and $0.37. However, sustained support from investors will be crucial if the cryptocurrency is to reach its previous high of $0.45 and possibly set a new high.

If momentum declines, TRX is at risk of sliding into decline. A break below the $0.33 support could push the Token lower, targeting $0.32 or even weaker levels. Such a move would reduce the chances of TRX setting a new high this month.