Bitcoin’s Worst Month Is Coming – Will History Repeat in 2025?
With just days left before September begins, traders are bracing for what has historically been Bitcoin’s weakest month of the year.
Market data compiled by Coinglass from January 2013 to August 2025 shows that Bitcoin has averaged a -3.77% return in September over the past 12 years, making it the worst-performing month for the asset.
Crypto analyst Lark Davis highlighted the trend, noting that while Bitcoin has enjoyed strong performances in months like October and November, September consistently stands out as a drag on returns. The data reveals a stark contrast: October averages gains of more than 21%, while November has historically delivered a remarkable 46% surge.
The seasonality effect is clear. While the first quarter of the year tends to be mixed—with January and February posting moderate gains and March often pulling back—late Q3 has proven difficult for Bitcoin. August and September together mark a period of weakness before momentum usually picks up again in Q4.
The big question now is whether 2025 will follow the same script or surprise investors. Bitcoin’s current cycle is shaped by ETF inflows, increasing institutional adoption, and growing global use cases, which could counteract historical seasonal patterns.
Still, veteran traders are eyeing September cautiously, with many adjusting their strategies to account for possible downside volatility.
As the market approaches the end of August, all eyes are on whether Bitcoin will once again stumble into September—or if this time will break the cycle and defy its historical curse.
The information provided in this article is for informational purposes only and does not constitute financial, investment, or trading advice. Coindoo.com does not endorse or recommend any specific investment strategy or cryptocurrency. Always conduct your own research and consult with a licensed financial advisor before making any investment decisions.
Alex is Editor-in-Chief of Coindoo and co-founder of Millennial Media Group, with nearly a decade of experience covering financial markets - crypto first, then everything else. It started in 2016 with Bitcoin. Like most people at the time, he didn't fully understand it - so he kept digging. Blockchain, tokenomics, the projects, the cycles. That curiosity never stopped, and eventually pulled him into traditional markets too: equities, commodities, macro. Not because he left crypto behind, but because you can't properly understand one without the other. What drives him is straightforward: he wants to know why something is happening, not just that it's happening. Most market coverage stops at the headline - price up, price down, here's a chart. Alex finds that kind of reporting actively unhelpful. If you walk away from an article without understanding the mechanism behind the move, what did you actually learn? He holds a degree in Tourism from New Bulgarian University - not the most obvious path into financial markets, but markets have a way of pulling in people who are simply too curious to stay out. He has authored over 200 in-depth analyses and more than 10,000 articles across crypto and traditional finance. He still thinks every day in markets teaches him something new. That's probably why he hasn't stopped.
