Oil Prices in September 2004: WTI & Brent Daily Prices and Monthly Average
At $45.94 per barrel, September 2004's WTI average was the highest monthly average in nominal terms since EIA's records began in 1986, up $1.04 (2.3%) from August 2004. The average was 62% above the $28.31 of September 2003.
Daily spot prices, September 2004
Chart data table (22 rows)
| Period | WTI | Brent |
|---|---|---|
| Sep 30, 2004 | $49.56 | $47.76 |
| Sep 29, 2004 | $49.53 | $46.54 |
| Sep 28, 2004 | $49.76 | $47.52 |
| Sep 27, 2004 | $49.56 | $46.87 |
| Sep 24, 2004 | $48.86 | $46.13 |
| Sep 23, 2004 | $48.37 | $46.53 |
| Sep 22, 2004 | $48.41 | $45.66 |
| Sep 21, 2004 | $47.11 | $44.56 |
| Sep 20, 2004 | $46.33 | $43.60 |
| Sep 17, 2004 | $45.63 | $43.08 |
| Sep 16, 2004 | $44.03 | $40.68 |
| Sep 15, 2004 | $43.83 | $42.03 |
| Sep 14, 2004 | $44.62 | $41.34 |
| Sep 13, 2004 | $43.86 | $40.63 |
| Sep 10, 2004 | $42.84 | $41.03 |
| Sep 9, 2004 | $44.53 | $41.45 |
| Sep 8, 2004 | $42.77 | $39.91 |
| Sep 7, 2004 | $43.18 | $40.19 |
| Sep 6, 2004 | — | $40.40 |
| Sep 3, 2004 | $43.94 | $41.07 |
| Sep 2, 2004 | $44.04 | $42.39 |
| Sep 1, 2004 | $43.89 | $40.96 |
Prices rose over the month, from $43.89 on Sep 1, 2004 to $49.56 on Sep 30, 2004, with gains on 14 of 21 trading days. The largest one-day move was +$1.76 on Sep 9, 2004 (+4.1%).
Brent traded below WTI on average this month: $43.20 for the month, $2.61 under WTI across 21 matched dates.
Adjusted with CPI-U, the September 2004 average equals $81.51 in September 2026 dollars.
September 2004 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $45.94 | $43.20 |
| Change vs August 2004 | +$1.04 | +$0.46 |
| Change vs September 2003 | +$17.63 | +$16.09 |
| Highest daily price | $49.76 Sep 28, 2004 | $47.76 Sep 30, 2004 |
| Lowest daily price | $42.77 Sep 8, 2004 | $39.91 Sep 8, 2004 |
| Published daily observations | 21 | 22 |
| Average in September 2026 dollars (CPI-U) | $81.51 | $76.65 |
Monthly averages are EIA's published figures. Real figures use CPI-U for September 2004.
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | Sep 1, 2004 – Sep 30, 2004 | Sep 30, 2004 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | Sep 1, 2004 – Sep 30, 2004 | Sep 30, 2004 |
| 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:2004 daily prices (CSV)