Asian session in forex trading explained
By Ken Chigbo, Founder, KenMacro. Published 2026-05-13.
Quick answer
The Asian session is the forex trading window roughly aligned with Tokyo business hours, typically running from around midnight to 9am London time. It is dominated by JPY, AUD, NZD and CNH flow, tends to show lower volatility than London or New York, and often establishes the overnight range that European traders react to at the open.
What is Asian session?
The Asian session refers to the period when Tokyo, Singapore, Hong Kong and Sydney financial centres are active in the foreign exchange market. It is one of the three major sessions, alongside London and New York. Activity broadly runs from the Sydney open in the late afternoon UK time through to the Tokyo close in the morning, with peak liquidity typically concentrated in the Tokyo hours themselves. Yen crosses, Australian dollar pairs and offshore yuan see their deepest order books here, while European and dollar majors usually trade in tighter ranges with thinner volume.
How traders use Asian session
The desk treats the Asian session as a range-building window rather than a breakout environment for most pairs. Retail traders commonly mark the Asian high and Asian low on EUR/USD, GBP/USD and gold, then watch how London price action interacts with those levels at the 8am UK open. Institutional flow during this window is dominated by Japanese exporters hedging USD/JPY, Australian commodity-linked hedging in AUD/USD, and PBoC fixing activity in CNH. Macro releases concentrated in this period include Japanese CPI, Australian employment, RBA and BoJ rate decisions, and Chinese activity data. Spreads on a typical raw account widen modestly on European crosses but tighten on yen and Aussie pairs, where regional liquidity is deepest.
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Common misconceptions about the Asian session
A frequent error is treating the Asian session as uniformly quiet. Volatility can spike sharply around Tokyo fix at 9:55am JST, around major BoJ communications, and during Chinese data releases. Another misconception is that the session is only relevant for yen traders. AUD, NZD and CNH flows materially influence risk sentiment that carries into London. Finally, the Asian range is not a guaranteed reversal zone. The desk treats it as a reference, not a system. London frequently sweeps Asian highs or lows before establishing the genuine intraday direction.
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Frequently asked
What time does the Asian session start and end in UK time?
The Asian session broadly runs from the Sydney open at around 10pm or 11pm UK time, depending on daylight saving, through to the Tokyo close at approximately 9am UK time. Peak Tokyo liquidity is concentrated between midnight and 8am UK time. The exact boundaries shift twice a year when the UK changes between GMT and BST, while Japan remains on a fixed JST offset year round.
Which currency pairs are most active during the Asian session?
Yen crosses including USD/JPY, EUR/JPY, GBP/JPY and AUD/JPY are the most active, alongside AUD/USD, NZD/USD and USD/CNH. Gold also sees meaningful flow given strong Asian physical demand. European majors such as EUR/USD and GBP/USD trade but typically in narrower ranges with thinner books, which is why spreads on those pairs can widen slightly compared with London hours.
Is the Asian session good for beginners to trade?
It depends on the strategy. Range-based approaches on yen pairs can suit the session because volatility is generally more contained. However, thinner liquidity means slippage risk around news, and the most consistent edges typically require understanding Tokyo fix mechanics, BoJ policy stance and Chinese data calendars. Many retail traders prefer to use the session for analysis, marking Asian highs and lows, then trade the London open.
What is the Tokyo fix and why does it matter?
The Tokyo fix occurs at 9:55am JST, roughly 12:55am UK time during BST. Japanese banks set reference rates for corporate FX transactions, which can produce concentrated buying or selling flow, particularly in USD/JPY. Month-end and quarter-end fixes tend to be more volatile because exporter and importer hedging requirements cluster around these dates. The desk treats the fix as a known liquidity event rather than a predictable directional trade.
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