Oil Prices in October 1999: WTI & Brent Daily Prices and Monthly Average
WTI averaged $22.69 per barrel in October 1999, down $1.11 (4.7%) from September 1999. The average was 57% above the $14.46 of October 1998.
Daily spot prices, October 1999
Chart data table (21 rows; WTI on 21, Brent on 21)
| Period | WTI | Brent |
|---|---|---|
| Oct 29, 1999 | $21.79 | $21.11 |
| Oct 28, 1999 | $21.59 | $21.22 |
| Oct 27, 1999 | $22.71 | $22.18 |
| Oct 26, 1999 | $23.17 | $22.14 |
| Oct 25, 1999 | $23.22 | $22.45 |
| Oct 22, 1999 | $23.48 | $22.38 |
| Oct 21, 1999 | $22.74 | $21.68 |
| Oct 20, 1999 | $22.21 | $21.02 |
| Oct 19, 1999 | $22.36 | $21.59 |
| Oct 18, 1999 | $22.44 | $22.26 |
| Oct 15, 1999 | $22.81 | $21.65 |
| Oct 14, 1999 | $22.46 | $22.28 |
| Oct 13, 1999 | $22.93 | $22.26 |
| Oct 12, 1999 | $22.93 | $21.89 |
| Oct 11, 1999 | $21.58 | $20.84 |
| Oct 8, 1999 | $20.81 | $20.78 |
| Oct 7, 1999 | $22.46 | $22.33 |
| Oct 6, 1999 | $23.24 | $23.07 |
| Oct 5, 1999 | $23.37 | $22.64 |
| Oct 4, 1999 | $23.71 | $23.30 |
| Oct 1, 1999 | $24.51 | $22.98 |
Prices fell over the month, from $24.51 on Oct 1, 1999 to $21.79 on Oct 29, 1999, with declines on 14 of 20 trading days. The largest one-day move was −$1.65 on Oct 8, 1999 (−7.3%).
Brent averaged $22.00, within a dollar of WTI on average across the 21 dates when both were published.
Among the 41 October averages EIA has published, 1999's ranks 12th lowest. Within 1999 it ranks 4th highest of the 12 monthly averages. The high was $24.51 on Oct 1, 1999 and the low $20.81 on Oct 8, 1999. WTI moved 5% or more from the previous published price on 2 days. In October 2026 dollars (CPI-U), the average equals $45.53 and the high of $24.51 equals $49.18.
October 1999 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $22.69 | $22.00 |
| Change vs September 1999 | −$1.11 | −$0.54 |
| Change vs October 1998 | +$8.23 | +$9.30 |
| Highest daily price | $24.51 Oct 1, 1999 | $23.30 Oct 4, 1999 |
| Lowest daily price | $20.81 Oct 8, 1999 | $20.78 Oct 8, 1999 |
| Published daily observations | 21 | 21 |
| Average in October 2026 dollars (CPI-U) | $45.53 | $44.15 |
Monthly averages are EIA's published figures. Real figures use CPI-U for October 1999.
October in other years
| Year | WTI average | vs October 1999 | Real |
|---|---|---|---|
| 2026 | $102.07 | +349.8% | $102.07 |
| 2025 | $60.89 | +168.4% | — |
| 2024 | $71.99 | +217.3% | $76.97 |
| 2023 | $85.64 | +277.4% | $93.95 |
| 2022 | $87.55 | +285.9% | $99.15 |
| 2021 | $81.48 | +259.1% | $99.43 |
| 2020 | $39.40 | +73.6% | $51.07 |
| 2019 | $53.96 | +137.8% | $70.77 |
| 2018 | $70.75 | +211.8% | $94.43 |
| 2017 | $51.58 | +127.3% | $70.58 |
| 2016 | $49.78 | +119.4% | $69.50 |
| 2015 | $46.22 | +103.7% | $65.59 |
| 2014 | $84.40 | +272.0% | $119.97 |
| 2013 | $100.54 | +343.1% | $145.30 |
| 2012 | $89.49 | +294.4% | $130.57 |
| 2011 | $86.32 | +280.4% | $128.67 |
| 2010 | $81.89 | +260.9% | $126.37 |
| 2009 | $75.72 | +233.7% | $118.22 |
| 2008 | $76.61 | +237.6% | $119.39 |
| 2007 | $85.80 | +278.1% | $138.60 |
| 2006 | $58.89 | +159.5% | $98.49 |
| 2005 | $62.26 | +174.4% | $105.49 |
| 2004 | $53.28 | +134.8% | $94.20 |
| 2003 | $30.34 | +33.7% | $55.35 |
| 2002 | $28.84 | +27.1% | $53.69 |
| 2001 | $22.17 | −2.3% | $42.11 |
| 2000 | $33.11 | +45.9% | $64.22 |
| 1999 | $22.69 | — | $45.53 |
| 1998 | $14.46 | −36.3% | $29.76 |
| 1997 | $21.33 | −6.0% | $44.55 |
| 1996 | $24.88 | +9.7% | $53.05 |
| 1995 | $17.43 | −23.2% | $38.27 |
| 1994 | $17.72 | −21.9% | $40.00 |
| 1993 | $18.15 | −20.0% | $42.04 |
| 1992 | $21.69 | −4.4% | $51.63 |
| 1991 | $23.23 | +2.4% | $57.06 |
| 1990 | $36.04 | +58.8% | $91.12 |
| 1989 | $20.10 | −11.4% | $54.01 |
| 1988 | $13.77 | −39.3% | $38.66 |
| 1987 | $19.86 | −12.5% | $58.14 |
| 1986 | $14.90 | −34.3% | $45.59 |
“—” 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 October 1999.
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | Oct 1, 1999 – Oct 29, 1999 | Oct 29, 1999 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | Oct 1, 1999 – Oct 29, 1999 | Oct 29, 1999 |
| 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:1999 daily prices (CSV)