Oil Prices in September 2006: WTI & Brent Daily Prices and Monthly Average
WTI average
$63.80
EIA monthly average
vs August 2006
−12.7%
$73.04
vs September 2005
−2.7%
$65.59
Brent average
$61.96
avg daily Brent − WTI −$2.17
WTI dropped in September 2006: the monthly average fell to $63.80, down $9.24 (12.7%) from August 2006. It was close to its level a year earlier ($65.59 in September 2005).
Daily spot prices, September 2006
Chart data table (21 rows)
| Period | WTI | Brent |
|---|---|---|
| Sep 29, 2006 | $62.90 | $59.09 |
| Sep 28, 2006 | $62.46 | $60.68 |
| Sep 27, 2006 | $62.96 | $57.60 |
| Sep 26, 2006 | $60.63 | $58.53 |
| Sep 25, 2006 | $60.74 | $57.89 |
| Sep 22, 2006 | $59.79 | $58.81 |
| Sep 21, 2006 | $61.62 | $59.27 |
| Sep 20, 2006 | $60.00 | $59.09 |
| Sep 19, 2006 | $61.77 | $62.52 |
| Sep 18, 2006 | $63.84 | $61.47 |
| Sep 15, 2006 | $63.30 | $60.23 |
| Sep 14, 2006 | $63.27 | $60.75 |
| Sep 13, 2006 | $64.09 | $61.28 |
| Sep 12, 2006 | $63.81 | $62.23 |
| Sep 11, 2006 | $65.42 | $62.41 |
| Sep 8, 2006 | $66.30 | $64.30 |
| Sep 7, 2006 | $67.37 | $64.52 |
| Sep 6, 2006 | $67.75 | $65.41 |
| Sep 5, 2006 | $68.70 | $65.94 |
| Sep 4, 2006 | — | $68.62 |
| Sep 1, 2006 | $69.24 | $70.49 |
Prices fell over the month, from $69.24 on Sep 1, 2006 to $62.90 on Sep 29, 2006, with declines on 13 of 20 trading days.
Brent traded below WTI on average this month: $61.96 for the month, $2.17 under WTI across 20 matched dates.
Adjusted with CPI-U, the September 2006 average equals $105.95 in September 2026 dollars.
September 2006 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $63.80 | $61.96 |
| Change vs August 2006 | −$9.24 | −$11.27 |
| Change vs September 2005 | −$1.79 | −$0.95 |
| Highest daily price | $69.24 Sep 1, 2006 | $70.49 Sep 1, 2006 |
| Lowest daily price | $59.79 Sep 22, 2006 | $57.60 Sep 27, 2006 |
| Published daily observations | 20 | 21 |
| Average in September 2026 dollars (CPI-U) | $105.95 | $102.89 |
Monthly averages are EIA's published figures. Real figures use CPI-U for September 2006.
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | Sep 1, 2006 – Sep 29, 2006 | Sep 29, 2006 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | Sep 1, 2006 – Sep 29, 2006 | Sep 29, 2006 |
| 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:2006 daily prices (CSV)