Crypto: Rises over 25% in August... but September could change everything
Sun, Aug 24, 2025 ▪ 5 min read
Stay Informed ▪ Altcoins
While Ether (ETH) reaches new highs with a rise of more than 25% in August, investors are wondering: are we facing a lasting consolidation or just a rebound before a correction? Driven by the flow into ETFs and a favorable macroeconomic climate, ETH is once again attracting institutional investors. However, history moderates the optimism. Since 2016, every August rally has given way to a bearish September. Will the current euphoria mark a breakout or reactivate the market's seasonal mechanics?
In summary
Ether (ETH) shows an increase of more than 25% since the beginning of August, driven by a favorable macroeconomic context.
Since 2016, every bullish August for ETH has been followed by a red September.
Data from CoinGlass shows an average loss of 6.42% for ETH in September over the last nine years.
This bearish trend is even more pronounced in years following the halving, according to several analysts.
Is history against Ether? A high-risk September
Since 2016, September has imposed itself as a true hurdle for Ether, particularly after strong performances in August, such as its new all-time high.
Historical data compiled by CoinGlass reveal a concerning regularity: every time Ether had a bullish August, it fell the following month.
Here are the three previous cases observed by analysts:
August 2017: Ether jumped +92.86% before falling -21.65% in September;
August 2020: an increase of +25.32%, followed by a decline of -17.08% in September;
August 2021: another increase of +35.62%, before a correction of -12.55% in September.
