The forex market runs 24 hours a day on weekdays, across four sessions: Sydney, Tokyo, London and New York. For UK traders, the London session and the London-New York overlap are the most active and liquid windows. This guide covers all session times in UK time and the best periods to trade.
The forex market has no central exchange and no fixed opening bell. It operates across a continuous relay of four major financial centres: Sydney, Tokyo, London and New York. As each centre's business day ends, the next takes over, creating a 24-hour weekday market that runs from Sunday evening to Friday evening. The market closes between Friday at 10pm UK time and Sunday at 10pm UK time in standard conditions, with Christmas Day and New Year's Day as additional closures.
For UK traders, all times convert relative to Greenwich Mean Time (GMT) in winter and British Summer Time (BST, GMT+1) in summer. The silver trading hours guide illustrates how commodity market sessions follow a similar global relay pattern, with liquidity concentrating at session overlaps.
| Session | Open (GMT winter) | Close (GMT winter) | Open (BST summer) | Close (BST summer) | Key currency pairs |
| Sydney | 10pm | 7am | 11pm | 8am | AUD/USD, NZD/USD, AUD/JPY |
| Tokyo | 12am | 9am | 1am | 10am | USD/JPY, EUR/JPY, AUD/JPY |
| London | 8am | 5pm | 8am | 5pm | EUR/USD, GBP/USD, EUR/GBP, USD/CHF |
| New York | 1pm | 10pm | 2pm | 11pm | EUR/USD, USD/JPY, GBP/USD, USD/CAD |
Note: London's UK time is the same year-round (8am-5pm) because when the UK shifts to BST in summer, other time zones also shift, keeping the local London business hours consistent for UK traders. What changes is the relationship with UTC. Sydney daylight saving runs opposite to the UK's, causing its UK-time hours to shift between seasons. Times above are sourced from CompareForexBrokers.co.uk (August 2026).
London is the world's largest forex centre by turnover. The London session, running from 8am to 5pm UK time, handles the deepest liquidity and tightest spreads of any session. It overlaps briefly with Tokyo in its opening hour and with New York from 1pm to 5pm, giving London the distinction of being the only session that bridges two other major sessions.
The most actively traded currency pairs during the London session are EUR/USD, GBP/USD and EUR/GBP, reflecting European and UK economic data releases that land in the morning hours: Eurozone PMIs, UK CPI, German IFO business sentiment and Bank of England decisions all drive sharp intraday moves. The London open at 8am is often one of the most volatile moments of the trading day, as European traders respond to overnight developments from Asia and the US markets.
Currency trading during the London session is distinct from other asset classes. The US stock market hours only partially overlap with the London forex session (from 2:30pm UK time when the NYSE opens), whereas the forex market runs continuously from the London open through to the New York close at 10pm.
New York is the second-largest forex centre by turnover. Its session runs from 1pm to 10pm UK time in winter (2pm to 11pm BST in summer). The US dollar is involved in over 85% of all forex transactions, making US economic data releases the most market-moving scheduled events in global forex. Non-farm payrolls (first Friday of each month), FOMC rate decisions, CPI and GDP releases all fall within the New York session window and routinely move EUR/USD by 50-100 pips or more in minutes.
For UK traders, the New York session is entirely tradeable within a standard working evening. Many UK-based traders specifically target the New York session for its data-driven volatility on major dollar pairs. Overnight positions in the New York session are subject to swap/rollover charges that begin at 10pm UK time when the daily calculation is made.
The London-New York overlap, running from 1pm to 5pm UK time in winter (2pm to 6pm BST in summer), is the most liquid and actively traded window in global forex. Both the world's two largest financial centres are simultaneously open, combining European and North American institutional order flow. Dukascopy's forex market hours analysis indicates this window generates 50-60% of intraday forex volatility.
EUR/USD average true range during the overlap can be 80-120 pips, compared with 40 pips during solo sessions. This wider movement creates both greater opportunity and greater risk. For UK spread bettors and CFD traders, the overlap window typically offers the tightest spreads on major pairs. The overlap is when US economic data is most likely to release (typically 1:30pm-3pm UK time for major releases), creating sharp, well-defined moves that technical and fundamental traders can both engage with.
The Tokyo session runs from midnight to 9am UK time in winter (1am to 10am BST in summer). It is the smallest of the four major sessions by turnover and is characterised by lower volatility than London or New York. The Japanese yen (JPY) pairs dominate activity: USD/JPY, EUR/JPY and AUD/JPY see their peak relative liquidity during Tokyo hours. Bank of Japan rate decisions and Japanese economic data move JPY pairs significantly during this session.
For UK traders, the Tokyo session runs overnight. Positions held through Tokyo hours are subject to the daily swap calculation at 10pm. Many UK retail traders prefer to close positions before the overnight period to avoid swap costs, particularly on positions that have reached their profit target during the London or New York sessions. The gold futures market is another market where Asian session dynamics influence pricing, given gold's role as a safe-haven asset and the significant participation of Asian central banks and investors.
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The optimal trading window depends on the currency pairs and strategy:
| Goal | Best window | Why |
| Tightest spreads on majors (EUR/USD, GBP/USD) | London session: 8am-5pm | Deepest liquidity; most institutional participation |
| Highest volatility and biggest moves | London-NY overlap: 1pm-5pm | Both major centres open simultaneously; US data releases |
| USD pairs around data releases | New York session: 1:30pm-4pm (data typically 1:30pm or 2pm) | Fed decisions, NFP, CPI all release in this window |
| JPY pairs (USD/JPY, EUR/JPY) | Tokyo session: 12am-9am | Highest JPY liquidity; BoJ decisions in this window |
| AUD/NZD pairs | Sydney-Tokyo overlap: 12am-7am | Pacific session pairs at their most liquid |
| Minimum spread cost on all pairs | Avoid 10pm-midnight and weekend gaps | Lowest volume; widest spreads; gap risk overnight Sunday |
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What time does the forex market open in the UK?
The forex market is effectively open 24 hours on weekdays, but for UK traders the most practical reference is the London session, which opens at 8am UK time and closes at 5pm. After 5pm, the New York session continues until 10pm UK time in winter (11pm BST). The market then operates in a quiet overnight window until the London session reopens at 8am.
What is the London session forex time?
The London forex session runs from 8am to 5pm UK time, year-round. This is because the London session is defined by UK business hours, which stay constant regardless of whether the UK is on GMT (winter) or BST (summer). The overlap with New York runs from 1pm to 5pm UK time in winter, or 2pm to 6pm BST in summer.
What is the New York session forex time in UK?
The New York forex session runs from 1pm to 10pm UK time in winter (GMT) and from 2pm to 11pm in British Summer Time. US economic data releases typically fall between 1:30pm and 4pm UK time, making this the most data-driven window for major dollar pairs.
When is the best time to trade forex in the UK?
For most UK traders, the London-New York overlap from 1pm to 5pm UK time (winter) offers the best combination of liquidity, tight spreads and defined price moves around US data releases. The London open at 8am is also a high-activity window. Avoid the quiet overnight period between 10pm and 8am for major pair trading, particularly around the Sunday open where gap risk is highest.
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