Oil Prices in September 2008: WTI & Brent Daily Prices and Monthly Average
WTI dropped in September 2008: the monthly average fell to $104.11, down $12.56 (10.8%) from August 2008. The average was 30% above the $79.92 of September 2007.
Daily spot prices, September 2008
Chart data table (21 rows)
| Period | WTI | Brent |
|---|---|---|
| Sep 30, 2008 | $100.70 | $93.52 |
| Sep 29, 2008 | $96.29 | $95.96 |
| Sep 26, 2008 | $106.77 | $100.88 |
| Sep 25, 2008 | $111.54 | $100.45 |
| Sep 24, 2008 | $106.84 | $102.09 |
| Sep 23, 2008 | $107.85 | $100.72 |
| Sep 22, 2008 | $122.61 | $100.43 |
| Sep 19, 2008 | $104.05 | $93.46 |
| Sep 18, 2008 | $97.50 | $90.89 |
| Sep 17, 2008 | $97.39 | $86.09 |
| Sep 16, 2008 | $91.49 | $85.85 |
| Sep 15, 2008 | $95.52 | $90.45 |
| Sep 12, 2008 | $101.19 | $94.37 |
| Sep 11, 2008 | $100.95 | $96.01 |
| Sep 10, 2008 | $102.66 | $96.00 |
| Sep 9, 2008 | $103.23 | $98.94 |
| Sep 8, 2008 | $106.35 | $101.08 |
| Sep 5, 2008 | $106.47 | $102.51 |
| Sep 4, 2008 | $107.99 | $103.41 |
| Sep 3, 2008 | $109.38 | $103.88 |
| Sep 2, 2008 | $109.63 | $104.94 |
Prices fell over the month, from $109.63 on Sep 2, 2008 to $100.70 on Sep 30, 2008, with declines on 14 of 21 trading days. The largest one-day move was +$18.56 on Sep 22, 2008 (+17.8%).
Brent traded below WTI on average this month: $97.23 for the month, $6.88 under WTI across 21 matched dates.
Adjusted with CPI-U, the September 2008 average equals $160.34 in September 2026 dollars.
September 2008 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $104.11 | $97.23 |
| Change vs August 2008 | −$12.56 | −$16.01 |
| Change vs September 2007 | +$24.19 | +$20.06 |
| Highest daily price | $122.61 Sep 22, 2008 | $104.94 Sep 2, 2008 |
| Lowest daily price | $91.49 Sep 16, 2008 | $85.85 Sep 16, 2008 |
| Published daily observations | 21 | 21 |
| Average in September 2026 dollars (CPI-U) | $160.34 | $149.74 |
Monthly averages are EIA's published figures. Real figures use CPI-U for September 2008.
Part of the price episode: 2008 spike and crash
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | Sep 2, 2008 – Sep 30, 2008 | Sep 30, 2008 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | Sep 2, 2008 – Sep 30, 2008 | Sep 30, 2008 |
| 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:2008 daily prices (CSV)