Oil Prices in May 2011: WTI & Brent Daily Prices and Monthly Average
WTI averaged $100.90 per barrel in May 2011, down $8.63 (7.9%) from April 2011. The average was 37% above the $73.74 of May 2010.
Daily spot prices, May 2011
Chart data table (21 rows)
| Period | WTI | Brent |
|---|---|---|
| May 31, 2011 | $102.70 | $117.18 |
| May 27, 2011 | $100.58 | $114.85 |
| May 26, 2011 | $100.18 | $115.06 |
| May 25, 2011 | $100.78 | $114.47 |
| May 24, 2011 | $99.13 | $112.52 |
| May 23, 2011 | $97.06 | $110.13 |
| May 20, 2011 | $99.15 | $111.25 |
| May 19, 2011 | $97.99 | $113.20 |
| May 18, 2011 | $99.52 | $112.54 |
| May 17, 2011 | $96.40 | $109.39 |
| May 16, 2011 | $96.91 | $113.72 |
| May 13, 2011 | $99.21 | $113.08 |
| May 12, 2011 | $98.53 | $112.87 |
| May 11, 2011 | $97.88 | $115.66 |
| May 10, 2011 | $103.39 | $117.82 |
| May 9, 2011 | $100.32 | $113.21 |
| May 6, 2011 | $96.87 | $113.69 |
| May 5, 2011 | $99.89 | $111.93 |
| May 4, 2011 | $108.79 | $121.55 |
| May 3, 2011 | $110.60 | $124.01 |
| May 2, 2011 | $113.03 | $126.64 |
The month's range ran from $96.40 on May 17, 2011 to $113.03 on May 2, 2011; the last price was $102.70 on May 31, 2011. The largest one-day move was −$8.90 on May 5, 2011 (−8.2%).
Brent averaged $114.99; its premium over WTI on matched dates averaged $14.09, with the daily Brent − WTI difference ranging from +$12.04 to +$17.78.
Adjusted with CPI-U, the May 2011 average equals $150.45 in September 2026 dollars.
May 2011 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $100.90 | $114.99 |
| Change vs April 2011 | −$8.63 | −$8.27 |
| Change vs May 2010 | +$27.16 | +$39.04 |
| Highest daily price | $113.03 May 2, 2011 | $126.64 May 2, 2011 |
| Lowest daily price | $96.40 May 17, 2011 | $109.39 May 17, 2011 |
| Published daily observations | 21 | 21 |
| Average in September 2026 dollars (CPI-U) | $150.45 | $171.46 |
Monthly averages are EIA's published figures. Real figures use CPI-U for May 2011.
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | May 2, 2011 – May 31, 2011 | May 31, 2011 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | May 2, 2011 – May 31, 2011 | May 31, 2011 |
| U.S. Bureau of Labor Statistics | CUUR0000SA0 — CPI-U, all items, NSA | index, 1982–84=100 | monthly | September 2026 |
Last updated: Oct 21, 2026, 5:27 PM CDT. Raw values are shown in source units; any conversion is labeled. See methodology and data sources.
Download:2011 daily prices (CSV)