Bitcoin in August: seasonality and history
Since 2010, Bitcoin has risen in August in 35% of years (6 of 17), with an average return of −0.29% and a median of −7.88%. That makes August its #11 month of 12.
Average−0.29%
Years up35%
Best year2017 · +63.58%
Worst year2011 · −38.69%
The seasonal path through August
Cumulative sum of each day's average return through August, all years since 2010.
| Strongest days | Avg | Up |
|---|---|---|
| Aug 20 | +2.56% | 65% |
| Aug 9 | +2.49% | 35% |
| Aug 7 | +1.84% | 71% |
| Weakest days | Avg | Up |
|---|---|---|
| Aug 18 | −2.62% | 24% |
| Aug 2 | −1.49% | 24% |
| Aug 6 | −1.38% | 53% |
August in recent years
| Year | Bitcoin in August |
|---|---|
| 2026 | +25.05% |
| 2025 | −6.50% |
| 2024 | −8.74% |
| 2023 | −11.29% |
| 2022 | −14.09% |
| 2021 | +13.31% |
| 2020 | +3.16% |
| 2019 | −4.51% |
| 2018 | −9.55% |
| 2017 | +63.58% |
Questions
Is August a bad month for Bitcoin?
On average, yes: −0.29% since 2010, rising in 35% of years. But the range is wide, from −38.69% in 2011 to +63.58% in 2017, so an average is a tendency, not a forecast.
What are the strongest days in August?
Aug 20 (+2.56%, up 65% of years), Aug 9 (+2.49%, up 35% of years), Aug 7 (+1.84%, up 71% of years).