Tokyo session — yen pairs, Chinese data and the night market

It is a quarter to three in the morning across most of Europe. Warsaw is asleep, and in Beijing the statisticians have just released the manufacturing PMI. The number lands below expectations, and within minutes the Australian dollar sheds dozens of pips. That is the Tokyo session in miniature: the hours when Europe rests and Asia sets the prices. Below I explain how this overnight market looks from the inside and what a trader in our time zone can realistically take from it.

What the Tokyo session is and when it runs

The Tokyo session, often called the Asian session, is the first of the three big sessions in the trading day. It opens around midnight Central European Time and winds down near nine in the morning, when London takes over. Those hours shift by about an hour around daylight-saving changes, because Japan does not move its clocks and much of Europe does. The busiest stretch falls between two and four in the morning, when Tokyo, Singapore and Hong Kong are all active at once.

It helps to be honest about scale. According to the Bank for International Settlements survey from 2022, Japan accounts for roughly 4 percent of global currency turnover measured by the location of trading desks. For comparison, the United Kingdom is about 38 percent, the United States 19 percent, Singapore around 9 percent and Hong Kong 7 percent. Tokyo is therefore only one of several Asian hubs, even if it is the most recognisable and sets the tone for the whole session.

Which pairs actually come alive overnight

The Tokyo session has a clear currency character. The most liquid instruments are the pairs that include the Japanese yen, because this is the time when Japanese banks and exporters move their flows. USD/JPY comes first — its spreads are tightest and its charts cleanest during these hours. Just behind it sit EUR/JPY and GBP/JPY, the yen crosses, which can be lively and fast-moving.

The second family is the antipodean currencies. Because the Tokyo session overlaps in the early morning with the tail of the Sydney session, AUD/JPY and AUD/USD trade well. The Australian dollar is especially sensitive here, since Australia's economy leans heavily on trade with China — AUD/USD reacts to Chinese data almost as if it were Australian data.

The remaining majors fade into the background overnight. EUR/USD and GBP/USD are thinner in Tokyo, with wider spreads than during European hours, and their moves can stay sluggish until London opens. If you are drawn to that larger arena, I covered it separately in the piece on the London session. None of this means the euro cannot be traded at night — only that you are not playing it in its best conditions.

„The Japanese yen is most actively traded during the Asian session, when Japanese banks and corporations are present in the market." — Kathy Lien, Day Trading and Swing Trading the Currency Market, Wiley, 2016

The Chinese data that moves the night

The most important event of the Tokyo session is usually not Japan but China. Key macro releases from Beijing reach the market around 2:45 in the morning Central European Time, in the middle of the most liquid window. Manufacturing and services PMI, inflation, gross domestic product, retail sales and industrial production — each of these can trigger a sharp move.

The Australian dollar reacts most strongly, because China is the largest buyer of Australian commodity exports. Gold trembles alongside it, since China is one of the world's biggest consumers of the metal. A surprise of about one point in the PMI relative to forecast can push AUD/USD by dozens of pips in minutes. That is why even a trader focused on the yen should keep the Chinese calendar close — an unexpected reading spills across the whole session.

The Bank of Japan and the risk of intervention

The second source of overnight volatility is the Bank of Japan. Interest-rate decisions are announced several times a year, usually during Tokyo morning hours, which for us falls in the small hours. The decision itself often matters less than the tone of the statement, because Japanese monetary policy has balanced around very low rates for years.

Currency intervention is a chapter of its own. When the yen weakens too quickly, Japan's Ministry of Finance can step into the market without warning and strengthen the currency by hundreds of pips in moments. Such moves are rare, but they can overturn any open position on yen pairs. For that reason, around Bank of Japan meetings it is wiser to reduce position size or skip new entries.

How to trade the Tokyo session from a European time zone

The hardest part of this session is not the charts but the clock. For anyone with a day job, getting up at two in the morning regularly makes no sense and quickly takes a toll on health. Rather than fight your biology, match your style to the rhythm of the market.

For position and swing traders the simplest answer is pending orders set before bed. In the evening you mark your levels on USD/JPY or AUD/USD, place entries with a stop loss, and let the broker execute them if price gets there. The second layer is price alerts and phone notifications set near 2:45, so you only wake up when the Chinese data genuinely surprises. If you are still mapping out your daily routine around the market, the overview in the article on the trader's time zone will help.

The third option is for the committed. If you specialise in yen pairs or commodity currencies, you can deliberately shift your schedule so your active hours line up with the Asian session. That demands a consistent change in routine, but it gives you the best liquidity on these instruments. A natural bridge is the early morning, when Tokyo is still working and Europe is waking up — I devoted a separate piece to that moment, the overlap between the Tokyo and London sessions. For a broader view of how the trading day is divided, the chapter on trading hours on ForexMechanics goes deeper.

Next steps

1. Check the hours at your own broker. Note when the Tokyo session actually begins in the current clock — summer or winter time — because a one-hour shift changes the moment of the Chinese releases.
2. Narrow your instrument list. Keep USD/JPY, EUR/JPY, GBP/JPY plus AUD/USD and AUD/JPY for the night. Leave the rest of the majors for the London session.
3. Set an alert for 2:45. Put the Chinese data for the coming week in your calendar and rely on a notification instead of an alarm that keeps you up all night.
4. Cut risk before the Bank of Japan. Reduce your position or avoid new entries on yen pairs for half an hour before and after the statement.