These figures are computed from 15 years of actual monthly closing prices. Past seasonal patterns are not a guarantee of future performance. See our methodology for how this is calculated, or visit the Academy to learn how to read seasonal data responsibly.
S&P 500 seasonality — common questions
What is S&P 500's best month historically?
Historically, November has been S&P 500's strongest month, averaging +3.11% with a 87% win rate over 15 years of data. September has been the weakest at -1.29%.
Is S&P 500 seasonal?
S&P 500 shows a measurable seasonal pattern: its best and worst months differ by 4.40 percentage points on average. These figures come from 15 years of real monthly closing prices. Seasonality is a historical tendency, not a prediction.
How does S&P 500 historically perform in August?
S&P 500 is currently in August, which has historically averaged +0.19% with a 56% win rate. That is a historically neutral window.
Get the full analysis
Backtest this seasonal pattern, compare it against other assets, set alerts, and explore detrended & presidential-cycle views.
TimingAX is an independently operated service, not a registered investment adviser. This page is for informational purposes only and is not financial advice.