January Seasonal Effect Favors Dollar Strength

 | Jan 05, 2009 07:00PM ET

In this article, we argue that there is an interesting seasonal pattern affecting the US dollar’s exchange rate during the month of January. To some extent, the U.S. dollar has a tendency to rise during the month of January, particularly against the Japanese yen. In fact, over the past decade the U.S. dollar rallied against the Japanese yen during 7 out of the last 10 years. It is true that past returns are not indicative of future results. Yet, price patterns do form in the currency market and there are many different ways to incorporate seasonality into your trading.

US Dollar – Japanese Yen (USD/JPY)

The U.S. dollar appreciated against the Japanese yen in 20 out of the last 29 years, which is roughly 69 percent of the total sample. The seasonal effect was particularly strong during the 1999 to 2003 period. On average, the USD/JPY exchange rate gained 2.28 percent during the positive months and lost 2.72 percent during the negative months.