Oil Prices in April 1991: WTI & Brent Daily Prices and Monthly Average
WTI averaged $20.83 per barrel in April 1991, up $0.93 (4.7%) from March 1991. A year earlier, in April 1990, it averaged $18.43, so the price was higher by $2.40 (13.0%) year over year.
Daily spot prices, April 1991
Chart data table (22 rows; WTI on 22, Brent on 22)
| Period | WTI | Brent |
|---|---|---|
| Apr 30, 1991 | $20.99 | $19.70 |
| Apr 29, 1991 | $21.30 | $19.95 |
| Apr 26, 1991 | $21.28 | $19.63 |
| Apr 25, 1991 | $20.95 | $19.60 |
| Apr 24, 1991 | $21.00 | $19.55 |
| Apr 23, 1991 | $21.03 | $19.60 |
| Apr 22, 1991 | $21.68 | $19.78 |
| Apr 19, 1991 | $21.16 | $19.18 |
| Apr 18, 1991 | $21.08 | $19.40 |
| Apr 17, 1991 | $21.73 | $19.85 |
| Apr 16, 1991 | $21.60 | $19.90 |
| Apr 15, 1991 | $21.85 | $20.23 |
| Apr 12, 1991 | $21.54 | $19.93 |
| Apr 11, 1991 | $20.98 | $19.50 |
| Apr 10, 1991 | $21.08 | $19.25 |
| Apr 9, 1991 | $20.58 | $18.60 |
| Apr 8, 1991 | $20.28 | $18.58 |
| Apr 5, 1991 | $20.03 | $18.35 |
| Apr 4, 1991 | $19.98 | $18.00 |
| Apr 3, 1991 | $19.48 | $17.75 |
| Apr 2, 1991 | $19.38 | $17.63 |
| Apr 1, 1991 | $19.28 | $18.00 |
The month's range ran from $19.28 on Apr 1, 1991 to $21.85 on Apr 15, 1991; the last price was $20.99 on Apr 30, 1991.
Brent averaged $19.18, on matched dates $1.65 below WTI on average across 22 dates.
Among the 41 April averages EIA has published, 1991's ranks 13th lowest. Within 1991 it ranks 5th lowest of the 12 monthly averages. In October 2026 dollars (CPI-U), the average equals $52.00 and the high of $21.85 equals $54.55.
April 1991 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $20.83 | $19.18 |
| Change vs March 1991 | +$0.93 | +$0.10 |
| Change vs April 1990 | +$2.40 | +$2.57 |
| Highest daily price | $21.85 Apr 15, 1991 | $20.23 Apr 15, 1991 |
| Lowest daily price | $19.28 Apr 1, 1991 | $17.63 Apr 2, 1991 |
| Published daily observations | 22 | 22 |
| Average in October 2026 dollars (CPI-U) | $52.00 | $47.88 |
Monthly averages are EIA's published figures. Real figures use CPI-U for April 1991.
April in other years
| Year | WTI average | vs April 1991 | Real |
|---|---|---|---|
| 2026 | $100.32 | +381.6% | $101.67 |
| 2025 | $63.54 | +205.0% | $66.85 |
| 2024 | $85.35 | +309.7% | $91.87 |
| 2023 | $79.45 | +281.4% | $88.39 |
| 2022 | $101.78 | +388.6% | $118.82 |
| 2021 | $61.72 | +196.3% | $78.00 |
| 2020 | $16.55 | −20.5% | $21.79 |
| 2019 | $63.86 | +206.6% | $84.34 |
| 2018 | $66.25 | +218.1% | $89.25 |
| 2017 | $51.06 | +145.1% | $70.48 |
| 2016 | $40.75 | +95.6% | $57.48 |
| 2015 | $54.45 | +161.4% | $77.67 |
| 2014 | $102.07 | +390.0% | $145.31 |
| 2013 | $92.02 | +341.8% | $133.56 |
| 2012 | $103.32 | +396.0% | $151.56 |
| 2011 | $109.53 | +425.8% | $164.37 |
| 2010 | $84.29 | +304.7% | $130.49 |
| 2009 | $49.65 | +138.4% | $78.58 |
| 2008 | $112.58 | +440.5% | $176.88 |
| 2007 | $63.98 | +207.2% | $104.48 |
| 2006 | $69.44 | +233.4% | $116.31 |
| 2005 | $52.98 | +154.3% | $91.89 |
| 2004 | $36.75 | +76.4% | $65.98 |
| 2003 | $28.17 | +35.2% | $51.73 |
| 2002 | $26.18 | +25.7% | $49.14 |
| 2001 | $27.49 | +32.0% | $52.45 |
| 2000 | $25.72 | +23.5% | $50.68 |
| 1999 | $17.31 | −16.9% | $35.15 |
| 1998 | $15.35 | −26.3% | $31.88 |
| 1997 | $19.70 | −5.4% | $41.50 |
| 1996 | $23.50 | +12.8% | $50.75 |
| 1995 | $19.90 | −4.5% | $44.22 |
| 1994 | $16.42 | −21.2% | $37.60 |
| 1993 | $20.25 | −2.8% | $47.46 |
| 1992 | $20.23 | −2.9% | $48.95 |
| 1991 | $20.83 | — | $52.00 |
| 1990 | $18.43 | −11.5% | $48.26 |
| 1989 | $21.07 | +1.2% | $57.77 |
| 1988 | $17.86 | −14.3% | $51.48 |
| 1987 | $18.68 | −10.3% | $55.94 |
| 1986 | $12.84 | −38.4% | $39.90 |
“—” in the real column means BLS has published no CPI-U for that month. The comparison column shows how far that year's average was from April 1991.
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | Apr 1, 1991 – Apr 30, 1991 | Apr 30, 1991 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | Apr 1, 1991 – Apr 30, 1991 | Apr 30, 1991 |
| U.S. Bureau of Labor Statistics | CUUR0000SA0 — CPI-U, all items, NSA | index, 1982–84=100 | monthly | October 2026 |
Last updated: Nov 10, 2026, 7:01 PM CST. Raw values are shown in source units; any conversion is labeled. See methodology and data sources.
Download:1991 daily prices (CSV)