Session high/low are the extreme prices (highest and lowest) reached during a specific trading session, used as key structural support and resistance levels. They’re foundational for range-breakout and session-based trading strategies.
Understanding Trading Sessions
Forex trades 24 hours, but volume and participation vary by session:
Asian Session (Tokyo focus)
- Hours: 21:00 (Tue) - 08:00 (Wed) EST (roughly)
- Characteristics: Quietest, smallest ranges, low volatility, JPY pairs most active
- Session high/low: Typically narrow range (30-100 pips for majors)
London Session (European focus)
- Hours: 03:00 - 12:00 EST (roughly)
- Characteristics: Medium volatility, good trends, major economic data, GBP/EUR active
- Session high/low: Medium range (80-200 pips common)
New York Session (US focus)
- Hours: 13:00 - 22:00 EST (roughly)
- Characteristics: Highest volatility, strong trends, major US economic data, USD/commodities active
- Session high/low: Largest range (100-300+ pips possible)
Overlaps
- London-New York overlap (most important): 13:00-16:00 EST. Highest combined volume. Best trending conditions.
How Session High/Low Works as Structure
Each session creates a range: session high (highest price reached) and session low (lowest price reached).
Examples of how traders use session levels:
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Support/Resistance — London session low becomes support; New York session tries to break it. If it holds, it’s structural support.
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Breakout targets — Yesterday’s session high is today’s potential breakout target. Price breaks and extends.
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Range trading — Scalpers trade within a session’s range, buying the session low and shorting the session high.
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Stop hunt zones — Institutional traders push beyond session highs/lows to trigger stops, then reverse.
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Order block identification — Session high/low zones often coincide with where institutions accumulated positions.
Session High/Low by Pair
Different pairs have session-specific volatility:
- GBP pairs — React most during London session; London highs/lows are key levels
- JPY pairs — React most during Asian session; Asian highs/lows are key
- EUR/USD — Active all sessions, but London-US overlap is most important
- US dollar pairs — Most volatile during New York session; New York highs/lows are critical
Recognize your pair’s session preferences. This helps you trade the most liquid, most directional sessions.
Practical Trading Examples
Example 1: London Session High Tested in New York
- London session: High at 1.1080, Low at 1.1000. Closed at 1.1050.
- Asian session (overnight): Quiet, ranged 1.1040-1.1055.
- New York opens: Rallies toward London high of 1.1080.
- Result: Breaks above 1.1080. Extends to 1.1100+ (breakout worked)
Example 2: Stop Hunt Below Session Low
- New York session: High at 1.1100, Low at 1.1050. Closed at 1.1090.
- Retail places stops 10 pips below session low: at 1.1040
- Next session: Price drifts down, triggers stops at 1.1040 (stop hunt)
- Then rallies back above 1.1050, proving the session low was support
- Traders who went short at 1.1040 got trapped
How to Track Session Levels in Your Journal
In PipJournal, log session highs and lows:
- Session identified — Which session are you tracking? (Asian, London, US, previous day, etc.)
- Session high/low — Record exact price levels
- Trading vs this level — Did you trade off this level? Long below session high, short above session low?
- Break or hold — Did the next session break the level, or did it hold as support/resistance?
- Your trade result — If you traded the session level, what was your R:R?
Analyze:
- Pair-specific session levels — Which session’s highs/lows are most respected on your pairs? (GBP/USD might respect London highs; AUD/USD might respect Asian lows)
- Breakout rate from session levels — What % of times does price break above previous session high? If 60%+, you have an edge trading the breakout.
- Support rate at session lows — What % of times does price find support at session lows? Track this metric.
- Timeframe variation — Are daily session highs/lows more reliable than hourly? Usually yes; larger timeframes = stronger levels.
Session High/Low vs Fair Value Gaps
- Session high/low — The extreme prices of a defined time window (session)
- Fair value gap — An imbalance created when price moves sharply between candles
Fair value gaps occur within sessions or across session transitions. Session highs/lows are the boundaries of sessions. Both are useful; they serve different purposes.
Advanced: Multi-Session Confluences
The strongest support/resistance occurs when multiple session highs/lows align:
- Example: London session low at 1.1000, New York session low yesterday at 1.1000, order block identified at 1.1000 (same level, three confluences)
- Result: This level is very strong support. Bounces here have high probability.
When trading, look for confluences: do session levels align with order blocks, FVGs, moving averages? More confluence = higher probability.
Common Mistakes
- Overly precise levels — Session highs/lows are approximate. A level at 1.1000 might be 1.0998-1.1002. Don’t require exact tick matches.
- Ignoring session context — A London session high is more relevant for London-US overlap trades; less relevant during Asian session next day.
- Not accounting for gaps — Price can gap at session open (especially on Sunday night or after major news). Previous session high might not be relevant after a large gap.
- Assuming all session levels are equal — A quiet Asian session low has less significance than a high-volume London-US overlap low. Weigh levels by session activity.
Tools and Markers
Most charting platforms let you mark sessions with vertical lines or zones. Set alerts at previous session highs/lows so you don’t miss breakouts. PipJournal’s trade logging helps you track whether your session-level trading actually works on your pairs.
See also: Asian Range, Killzone, Order Block