Forex

The Best Time to Trade the Forex Market

Astron Team · 09/24/2026 · 6 min read

The forex market runs 24 hours a day, Monday through Friday, but that doesn't mean trading at 4am produces the same result as trading at 10am. Liquidity and volatility change throughout the day because forex is, in practice, the sum of four regional financial centers opening and closing in sequence: Sydney, Tokyo, London, and New York.

Understanding when each of these sessions is active — and, more importantly, when they overlap — helps explain why the same currency pair can look flat at one time of day and extremely lively at another, even with no relevant news in between.

The four sessions, in Brasília time

• Sydney session: roughly 6pm to 3am, marks the opening of the week and tends to have lower volume.
• Tokyo session: approximately 9pm to 6am, concentrates trading in the yen and Asian currencies.
• London session: 4am to 1pm, is historically the most liquid of the day, since a huge share of global currency volume passes through European banks.
• New York session: 9am to 6pm, moves the dollar strongly and concentrates the release of most US economic indicators.

The time when everything meets

The period of highest volatility in the day tends to be the overlap between London and New York, which in Brasília time happens roughly from 9am to 1pm. In this window, two of the world's largest financial centers are operating at the same time, which increases traded volume and, consequently, the size of price moves. Pairs like EUR/USD and GBP/USD tend to show their biggest swings of the day exactly during this interval.

Why volatility isn't the same as easy opportunity

More volatility means bigger moves, but also greater risk per trade. A pair that usually moves 40 points in a quiet hour can move 120 points during the London-New York overlap. This requires adjusting position size and stop-loss distance: using the same stop distance during a low-liquidity time and a high-liquidity time can mean completely different risk levels for the same trade.

A practical example of adjusting for time of day

Imagine a trader who trades EUR/USD with a R$ 5,000 account and a risk limit of 1% per trade, or R$ 50. During the Asian session, with more contained moves, a 20-point stop may be enough for the strategy. During the London-New York overlap, though, with the same pair moving more forcefully, a 40 or 50-point stop may be needed to avoid being stopped out by a normal swing at that time — which, to keep the same R$ 50 of risk, means cutting the position size in half.

Times that call for extra caution

In the minutes before and after the release of major economic indicators — such as US employment data or interest rate decisions — volatility can spike unpredictably, with sharp moves in either direction before the market absorbs the news. Beginner traders usually do better avoiding new trades during those specific minutes, watching the market until the initial reaction move settles down.

The spread also changes throughout the day

Besides volatility, the cost of entering a trade varies with the time of day. Outside the main sessions — for example, between the end of the New York session and the start of the Sydney session — liquidity drops, and the spread (the difference between the buy and sell price) tends to widen. This means that, besides the risk of an adverse move, the very cost of opening and closing the trade gets higher exactly when there are fewer active participants in the market. It's worth checking this detail before trading outside the busiest windows, especially for short-duration positions, where the spread weighs more heavily on the final result.

Find the time that fits your strategy

There is no single "right" time for everyone. Those who prefer more predictable moves and less noise may do better during lower-volatility sessions, with positions and targets adjusted to that slower pace. Those looking for wider price swings, and who have tolerance for the extra risk, tend to focus on the London-New York overlap. The important thing is to choose consciously, test the chosen time window over a consistent period, and adjust position size to the typical volatility level of that window, instead of trading whenever it simply happens to fit your schedule.