September Test for Bitcoin: Can History Repeat Itself?

Bitcoin has posted consecutive gains in July and August 2026, raising concerns about its historically weaker performance in September. According to CoinGlass data, Bitcoin gained 7.36% in July and 24.95% in August. However, the pattern of September weakness is less consistent than often claimed.

Historical data from CoinGlass shows that while September has been challenging for Bitcoin, it's not a guarantee of a decline. In fact, September finished positive in 2015, 2016, 2023, 2024, and 2025. The record also shows that previous September performance is not a reliable forecast.

The U.S. Senate has scheduled a procedural vote on the CLARITY Act on September 15, which could influence crypto sentiment. Regulatory uncertainty affects cryptocurrency businesses and investors in the United States, making this vote significant.