Seasonality in Forex: Do Currencies Follow Calendar Patterns? Seasonality refers to predictable patterns that occur during certain times of the year, and in forex, these can influence trading decisions. For example, December often sees lower volatility as institutional activity drops, while January tends to bring renewed flows and repositioning. Historical data shows certain currencies display seasonal behavior—USD often strengthens in Q1, while commodity currencies like AUD and CAD can perform well during seasonal demand spikes in raw materials. Agricultural and energy seasons also influence currencies linked to exports, such as BRL or NOK. In 2025, seasonality is being studied more closely by quantitative traders using historical data models. However, it’s not a standalone strategy—seasonal trends can be disrupted by unexpected geopolitical events or central bank actions. Still, seasonality adds another dimension to technical and macro analysis. For swing traders and position holders, recognizing recurring calendar-driven tendencies can improve timing, reduce false entries, and align trades with the rhythm of global money flow.