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BTC volatility drops to 25.7% in May — second-lowest monthly reading in two years
- Bitcoin's annualised volatility has fallen to just 25.7% in May 2026, the lowest monthly reading since September 2025's 24.4% — with three consecutive months of decline from 49.5% in March.
- Across 24 months of data from January 2024 to May 2026, only one month (Sep 2025 at 24.4%) recorded a lower figure; April 2026 was already subdued at 36.4%.
- Three consecutive months of declining volatility culminating in a near two-year floor represents an unusually extended period of calm for the world's largest crypto asset.
Supporting datasets
Supporting queries
To surface this insight, Baselight ran 3 queries across its structured data. Each one is reproducible — open it, read the SQL, and rerun it yourself.
Conclusion
Monthly annualised vol: May-26 = 25.7%, Apr-26 = 36.4%, Mar-26 = 49.5%, Feb-26 = 82.5%, Jan-26 = 43.3%, Sep-25 = 24.4% (dataset low). Queried via BTC-USD full 2-year history.