Oil Prices in September 2003: WTI & Brent Daily Prices and Monthly Average
WTI dropped in September 2003: the monthly average fell to $28.31, down $3.26 (10.3%) from August 2003. A year earlier, in September 2002, it averaged $29.66, so the price was lower by $1.35 (4.6%) year over year.
Daily spot prices, September 2003
Chart data table (22 rows)
| Period | WTI | Brent |
|---|---|---|
| Sep 30, 2003 | $29.19 | $28.09 |
| Sep 29, 2003 | $28.35 | $27.77 |
| Sep 26, 2003 | $28.21 | $27.02 |
| Sep 25, 2003 | $28.29 | $27.04 |
| Sep 24, 2003 | $28.19 | $26.81 |
| Sep 23, 2003 | $27.00 | $25.74 |
| Sep 22, 2003 | $26.97 | $25.82 |
| Sep 19, 2003 | $26.93 | $25.51 |
| Sep 18, 2003 | $27.26 | $25.56 |
| Sep 17, 2003 | $27.00 | $25.76 |
| Sep 16, 2003 | $27.60 | $26.28 |
| Sep 15, 2003 | $28.15 | $26.38 |
| Sep 12, 2003 | $28.26 | $26.52 |
| Sep 11, 2003 | $28.86 | $27.48 |
| Sep 10, 2003 | $29.41 | $27.76 |
| Sep 9, 2003 | $29.22 | $27.64 |
| Sep 8, 2003 | $28.85 | $28.47 |
| Sep 5, 2003 | $28.93 | $27.72 |
| Sep 4, 2003 | $28.87 | $27.49 |
| Sep 3, 2003 | $29.43 | $27.89 |
| Sep 2, 2003 | $29.57 | $28.08 |
| Sep 1, 2003 | — | $29.64 |
The month's range ran from $26.93 on Sep 19, 2003 to $29.57 on Sep 2, 2003; the last price was $29.19 on Sep 30, 2003. The largest one-day move was −$2.19 on Sep 2, 2003 (−6.9%).
Brent traded below WTI on average this month: $27.11 for the month, $1.32 under WTI across 21 matched dates.
Adjusted with CPI-U, the September 2003 average equals $51.51 in September 2026 dollars.
September 2003 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $28.31 | $27.11 |
| Change vs August 2003 | −$3.26 | −$2.78 |
| Change vs September 2002 | −$1.35 | −$1.29 |
| Highest daily price | $29.57 Sep 2, 2003 | $29.64 Sep 1, 2003 |
| Lowest daily price | $26.93 Sep 19, 2003 | $25.51 Sep 19, 2003 |
| Published daily observations | 21 | 22 |
| Average in September 2026 dollars (CPI-U) | $51.51 | $49.32 |
Monthly averages are EIA's published figures. Real figures use CPI-U for September 2003.
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | Sep 2, 2003 – Sep 30, 2003 | Sep 30, 2003 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | Sep 1, 2003 – Sep 30, 2003 | Sep 30, 2003 |
| 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:2003 daily prices (CSV)