
WTI crude fell 13% in May, its worst month since April 2025, as a US-Iran ceasefire deal threatens to reopen the Strait of Hormuz. The 87.60 support zone is the key level to watch.
West Texas Intermediate crude oil is on track for its worst month since April 2025, with futures down 13% from 1 May through 28 May. The selloff has turned WTI into the worst performer among major cross-asset classes this month, breaking a four-month winning streak.
The primary catalyst is a potential resolution to the three-month US-Iran conflict. A tentative 60-day ceasefire extension and separate talks on Tehran's nuclear program have raised the probability that the Strait of Hormuz will reopen. That prospect directly undermines the supply-risk premium that had been built into crude prices since February.
The simple read is that WTI is entrenched below both the 20-day and 50-day moving averages, with the 100.00 psychological level now acting as resistance. The 20-day and 50-day MAs converge near that round number, creating a dense overhead supply zone.
The better market read focuses on the reaction at 87.60, the gap fill from 20 April 2026. This is the first meaningful support below current prices. A clean break below that level would open the path toward 81.94 to 81.85, which combines the 17 April and 11 March 2026 lows with the lower boundary of a minor descending channel.
Resistance levels are stacked tightly above. The 97.40 high from 26 May is the first hurdle, followed by the 100.00 zone where the 20-day and 50-day MAs sit. Above that, 102.56 marks the 22 May high and the 61.6% Fibonacci retracement from the 19 May high to the 29 May intraday low.
A bearish confirmation requires a daily close below 87.60 with expanding volume. That would signal that the ceasefire-driven supply unwind is accelerating and that the medium-term range configuration is breaking down.
A bullish invalidation would require a reclaim of the 100.00 level on a weekly closing basis. That would put WTI back above both moving averages and suggest the selloff was a corrective pullback within a still-intact uptrend. Until that happens, the path of least resistance remains lower.
The next concrete decision point is the 60-day ceasefire extension deadline. If talks stall or the nuclear track collapses, the supply-risk premium could rebuild quickly, reversing the May selloff. If the reopening of the Strait of Hormuz becomes a formal agreement, the downside toward 81.94 becomes the base case.
For traders watching the forex market analysis desk, the crude move has direct implications for commodity currencies and inflation-sensitive pairs. The EUR/USD profile and GBP/USD profile both show sensitivity to oil-driven shifts in rate expectations. The currency strength meter can help track which currencies are absorbing the crude weakness most directly.
Prepared with AlphaScala research tooling and grounded in primary market data: live prices, fundamentals, SEC filings, hedge-fund holdings, and insider activity. Each story is checked against AlphaScala publishing rules before release. Educational coverage, not personalized advice.