Oil Prices in August 2005: WTI & Brent Daily Prices and Monthly Average
WTI jumped in August 2005: the monthly average rose to $64.99, up $5.99 (10.2%) from July 2005, the highest monthly average in nominal terms since EIA's records began in 1986. The average was 45% above the $44.90 of August 2004.
Daily spot prices, August 2005
Chart data table (23 rows)
| Period | WTI | Brent |
|---|---|---|
| Aug 31, 2005 | $68.63 | $66.80 |
| Aug 30, 2005 | $69.91 | $66.15 |
| Aug 29, 2005 | $67.41 | $64.77 |
| Aug 26, 2005 | $66.05 | $66.23 |
| Aug 25, 2005 | $67.29 | $65.88 |
| Aug 24, 2005 | $67.10 | $65.25 |
| Aug 23, 2005 | $65.81 | $65.16 |
| Aug 22, 2005 | $65.46 | $65.87 |
| Aug 19, 2005 | $65.51 | $64.21 |
| Aug 18, 2005 | $63.47 | $61.75 |
| Aug 17, 2005 | $63.29 | $63.41 |
| Aug 16, 2005 | $66.11 | $65.10 |
| Aug 15, 2005 | $66.21 | $66.68 |
| Aug 12, 2005 | $66.71 | $67.26 |
| Aug 11, 2005 | $65.67 | $65.90 |
| Aug 10, 2005 | $64.80 | $63.77 |
| Aug 9, 2005 | $63.13 | $62.79 |
| Aug 8, 2005 | $63.92 | $62.56 |
| Aug 5, 2005 | $62.44 | $60.73 |
| Aug 4, 2005 | $61.60 | $60.62 |
| Aug 3, 2005 | $60.76 | $60.04 |
| Aug 2, 2005 | $61.87 | $60.13 |
| Aug 1, 2005 | $61.51 | $60.56 |
Prices rose over the month, from $61.51 on Aug 1, 2005 to $68.63 on Aug 31, 2005, with gains on 15 of 23 trading days. The largest one-day move was −$2.82 on Aug 17, 2005 (−4.3%).
Brent traded below WTI on average this month: $63.98 for the month, $1.00 under WTI across 23 matched dates.
It was the second-highest monthly average of 2005. Adjusted with CPI-U, the August 2005 average equals $111.50 in September 2026 dollars.
August 2005 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $64.99 | $63.98 |
| Change vs July 2005 | +$5.99 | +$6.46 |
| Change vs August 2004 | +$20.09 | +$21.24 |
| Highest daily price | $69.91 Aug 30, 2005 | $67.26 Aug 12, 2005 |
| Lowest daily price | $60.76 Aug 3, 2005 | $60.04 Aug 3, 2005 |
| Published daily observations | 23 | 23 |
| Average in September 2026 dollars (CPI-U) | $111.50 | $109.76 |
Monthly averages are EIA's published figures. Real figures use CPI-U for August 2005.
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | Aug 1, 2005 – Aug 31, 2005 | Aug 31, 2005 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | Aug 1, 2005 – Aug 31, 2005 | Aug 31, 2005 |
| 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:2005 daily prices (CSV)