Oil Prices in September 2023: WTI & Brent Daily Prices and Monthly Average
At $89.43 per barrel, September 2023's WTI average was the highest monthly average in nominal terms since August 2022, up $8.04 (9.9%) from August 2023. A year earlier, in September 2022, it averaged $84.26, so the price was higher by $5.17 (6.1%) year over year.
Daily spot prices, September 2023
Chart data table (21 rows)
| Period | WTI | Brent |
|---|---|---|
| Sep 29, 2023 | $90.77 | $95.86 |
| Sep 28, 2023 | $91.65 | $96.64 |
| Sep 27, 2023 | $93.67 | $97.10 |
| Sep 26, 2023 | $91.43 | $94.46 |
| Sep 25, 2023 | $89.68 | $94.01 |
| Sep 22, 2023 | $90.00 | $93.99 |
| Sep 21, 2023 | $89.56 | $93.70 |
| Sep 20, 2023 | $89.20 | $94.56 |
| Sep 19, 2023 | $91.16 | $96.11 |
| Sep 18, 2023 | $91.47 | $95.95 |
| Sep 15, 2023 | $90.83 | $95.55 |
| Sep 14, 2023 | $90.13 | $95.20 |
| Sep 13, 2023 | $88.59 | $93.04 |
| Sep 12, 2023 | $88.87 | $93.58 |
| Sep 11, 2023 | $87.30 | $91.97 |
| Sep 8, 2023 | $87.51 | $91.85 |
| Sep 7, 2023 | $86.87 | $91.16 |
| Sep 6, 2023 | $87.55 | $91.79 |
| Sep 5, 2023 | $86.74 | $91.25 |
| Sep 4, 2023 | — | $90.42 |
| Sep 1, 2023 | $85.52 | $89.98 |
The month's range ran from $85.52 on Sep 1, 2023 to $93.67 on Sep 27, 2023; the last price was $90.77 on Sep 29, 2023.
Brent averaged $93.72; its premium over WTI on matched dates averaged $4.46, with the daily Brent − WTI difference ranging from +$3.03 to +$5.36.
It was the highest monthly average of 2023. Adjusted with CPI-U, the September 2023 average equals $97.90 in September 2026 dollars.
September 2023 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $89.43 | $93.72 |
| Change vs August 2023 | +$8.04 | +$7.57 |
| Change vs September 2022 | +$5.17 | +$3.96 |
| Highest daily price | $93.67 Sep 27, 2023 | $97.10 Sep 27, 2023 |
| Lowest daily price | $85.52 Sep 1, 2023 | $89.98 Sep 1, 2023 |
| Published daily observations | 20 | 21 |
| Average in September 2026 dollars (CPI-U) | $97.90 | $102.60 |
Monthly averages are EIA's published figures. Real figures use CPI-U for September 2023.
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | Sep 1, 2023 – Sep 29, 2023 | Sep 29, 2023 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | Sep 1, 2023 – Sep 29, 2023 | Sep 29, 2023 |
| 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:2023 daily prices (CSV)