Oil Prices in September 2021: WTI & Brent Daily Prices and Monthly Average
WTI average
$71.65
EIA monthly average
vs August 2021
+5.8%
$67.70
vs September 2020
+80.8%
$39.63
Brent average
$74.49
avg daily Brent − WTI +$2.94
WTI averaged $71.65 per barrel in September 2021, up $3.95 (5.8%) from August 2021. The average was 81% above the $39.63 of September 2020.
Daily spot prices, September 2021
Chart data table (22 rows)
| Period | WTI | Brent |
|---|---|---|
| Sep 30, 2021 | $75.22 | $77.81 |
| Sep 29, 2021 | $75.06 | $77.86 |
| Sep 28, 2021 | $75.44 | $78.30 |
| Sep 27, 2021 | $75.54 | $78.85 |
| Sep 24, 2021 | $74.18 | $77.42 |
| Sep 23, 2021 | $73.43 | $76.44 |
| Sep 22, 2021 | $72.37 | $75.50 |
| Sep 21, 2021 | $70.51 | $73.65 |
| Sep 20, 2021 | $70.41 | $73.59 |
| Sep 17, 2021 | $72.09 | $74.64 |
| Sep 16, 2021 | $72.69 | $75.14 |
| Sep 15, 2021 | $72.59 | $74.84 |
| Sep 14, 2021 | $70.53 | $73.05 |
| Sep 13, 2021 | $70.54 | $72.97 |
| Sep 10, 2021 | $69.82 | $72.44 |
| Sep 9, 2021 | $68.26 | $71.32 |
| Sep 8, 2021 | $69.36 | $72.36 |
| Sep 7, 2021 | $68.49 | $71.52 |
| Sep 6, 2021 | — | $72.43 |
| Sep 3, 2021 | $69.34 | $73.07 |
| Sep 2, 2021 | $70.07 | $73.56 |
| Sep 1, 2021 | $68.63 | $71.99 |
Prices rose over the month, from $68.63 on Sep 1, 2021 to $75.22 on Sep 30, 2021, with gains on 13 of 21 trading days.
Brent averaged $74.49; its premium over WTI on matched dates averaged $2.94, with the daily Brent − WTI difference ranging from +$2.25 to +$3.73.
Adjusted with CPI-U, the September 2021 average equals $88.01 in September 2026 dollars.
September 2021 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $71.65 | $74.49 |
| Change vs August 2021 | +$3.95 | +$3.88 |
| Change vs September 2020 | +$32.02 | +$33.58 |
| Highest daily price | $75.54 Sep 27, 2021 | $78.85 Sep 27, 2021 |
| Lowest daily price | $68.26 Sep 9, 2021 | $71.32 Sep 9, 2021 |
| Published daily observations | 21 | 22 |
| Average in September 2026 dollars (CPI-U) | $88.01 | $91.50 |
Monthly averages are EIA's published figures. Real figures use CPI-U for September 2021.
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | Sep 1, 2021 – Sep 30, 2021 | Sep 30, 2021 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | Sep 1, 2021 – Sep 30, 2021 | Sep 30, 2021 |
| 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:2021 daily prices (CSV)