Forex session

London Session

The London Session is the highest-volume single trading window in forex. From 3 AM to 12 PM ET (8 AM to 5 PM London time), London accounts for roughly 35% of daily global forex turnover. The London-NY overlap from 8 to 11 AM ET is when most directional moves of the day develop.

3 AM to 12 PM ET (approx, shifts with DST)

Hours (ET)

Highest of any single session

Volatility

~35% of daily forex turnover (largest single session)

Volume share

EUR, GBP, CHF, USD

Key currencies

What is the London Session?

London is the financial capital of Europe and the world's largest single forex trading center. The London Session is when the City of London's banks, hedge funds, and institutional desks are at their desks transacting. Combined with the timezone advantage that catches both Asian close and US open, London handles roughly 35% of daily global forex turnover.

Volatility is highest during this window. The biggest single-day moves on EUR/USD, GBP/USD, and the EUR/JPY family typically happen between 3 AM and 12 PM ET. Practical implication: traders on US hours should plan around the London-NY overlap (8 to 11 AM ET) for the highest-conviction setups.

Hours (ET): 3 AM to 12 PM ET (approx, shifts with DST)
Local time: 8 AM to 5 PM London time
Volume share: ~35% of daily forex turnover (largest single session)
Key overlap: London-NY overlap (8 to 11 AM ET) is the highest-volume window in forex

When to trade London

The London Session has three sub-windows worth knowing:

Pre-London (2 to 3 AM ET): Asian session is winding down, London desks are arriving. Limited liquidity but the first directional probes often happen here.

London core (3 to 8 AM ET): Full London participation. Daily ranges typically develop in this window. Best for pure-London-flow setups on EUR and GBP.

London-NY overlap (8 to 11 AM ET): Both London and US desks are active simultaneously. Highest volume of any 3-hour window in forex. Tightest spreads, biggest moves, best institutional-flow setups. This is the prime window for retail traders if you can only trade a few hours a day.

Best pairs to trade

London-session pairs are dominated by Europe-centric currencies:

- EUR/USD: highest-volume pair globally; London is its prime window. - GBP/USD: "Cable" is most active during London. Daily ranges of 80-120 pips are routine. - EUR/GBP: the "Chunnel." London open is its single biggest window. - USD/CHF and EUR/CHF: Swiss desks open with London. - EUR/JPY and GBP/JPY: yen-cross moves accelerate as London joins the Tokyo session winding down.

Skip USD/JPY-only or AUD-only setups during pure-London hours — those pairs are more active in their home sessions (Tokyo and Sydney respectively).

Top pairs for this session: EUR/USD · GBP/USD · EUR/GBP · USD/CHF · EUR/CHF.

News calendar to watch

Key London-session events:

- ECB rate decisions (typically 8:15 AM ET Thursdays of decision weeks). - ECB press conferences (45 minutes after the rate decision). - BoE rate decisions (typically 7 AM ET on Thursdays of decision weeks). - UK CPI (typically 2 AM ET Wednesdays). - Eurozone CPI (typically 5 AM ET monthly). - US economic data (8:30 AM ET) drops during the overlap and moves EUR/USD and GBP/USD 30-80 pips on surprises.

See the full live calendar on the economic calendar, or look up unfamiliar terms in the forex glossary.

London Session FAQ

What time does the London Session open?

3 AM to 12 PM ET (US Eastern), which corresponds to 8 AM to 5 PM London local time. The exact times shift by one hour twice a year because of US Daylight Saving Time transitions.

Why is the London Session so volatile?

London is the largest financial center in the world for forex trading by volume. The session also overlaps with both the end of the Asian session and the start of the US session, capturing flow from three timezones simultaneously.

What is the London-NY overlap?

The 3-hour window from 8 to 11 AM ET when both London and New York trading desks are active simultaneously. It is the highest-volume window in forex globally, with the tightest spreads and largest directional moves.

Which pairs are best to trade during London?

European-centric pairs: EUR/USD, GBP/USD, EUR/GBP, USD/CHF, EUR/CHF. Yen crosses (EUR/JPY, GBP/JPY) also accelerate as London picks up.

Should I trade during pure London or wait for the NY overlap?

If you can only trade a few hours, focus on the London-NY overlap (8 to 11 AM ET). Pure-London hours (3 to 8 AM ET) are still tradeable but have slightly lower liquidity than the overlap.

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