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.
Westpac seasonality — common questions
What is Westpac's best month historically?
Historically, February has been Westpac's strongest month, averaging +4.21% with a 63% win rate over 15 years of data. May has been the weakest at -1.64%.
Is Westpac seasonal?
Westpac shows a measurable seasonal pattern: its best and worst months differ by 5.85 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 Westpac historically perform in August?
Westpac is currently in August, which has historically averaged +0.42% with a 56% win rate. That is a historically neutral window.
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