Oil Prices in September 2015: WTI & Brent Daily Prices and Monthly Average
WTI averaged $45.48 per barrel in September 2015, up $2.61 (6.1%) from August 2015. The average was 51% below the $93.21 of September 2014.
Daily spot prices, September 2015
Chart data table (22 rows)
| Period | WTI | Brent |
|---|---|---|
| Sep 30, 2015 | $45.06 | $47.29 |
| Sep 29, 2015 | $45.24 | $47.58 |
| Sep 28, 2015 | $44.40 | $46.04 |
| Sep 25, 2015 | $45.55 | $47.28 |
| Sep 24, 2015 | $44.94 | $47.06 |
| Sep 23, 2015 | $44.53 | $48.00 |
| Sep 22, 2015 | $46.17 | $46.69 |
| Sep 21, 2015 | $46.67 | $47.64 |
| Sep 18, 2015 | $44.71 | $47.28 |
| Sep 17, 2015 | $46.93 | $48.27 |
| Sep 16, 2015 | $47.12 | $49.35 |
| Sep 15, 2015 | $44.58 | $45.91 |
| Sep 14, 2015 | $44.07 | $45.87 |
| Sep 11, 2015 | $44.75 | $46.87 |
| Sep 10, 2015 | $45.85 | $47.77 |
| Sep 9, 2015 | $44.13 | $48.04 |
| Sep 8, 2015 | $45.92 | $48.88 |
| Sep 7, 2015 | — | $46.42 |
| Sep 4, 2015 | $46.02 | $48.59 |
| Sep 3, 2015 | $46.75 | $50.41 |
| Sep 2, 2015 | $46.30 | $47.67 |
| Sep 1, 2015 | $45.38 | $48.80 |
Prices dipped to $44.07 on Sep 14, 2015, then climbed to $47.12 on Sep 16, 2015 and ended at $45.06. The largest one-day move was −$3.82 on Sep 1, 2015 (−7.8%).
Brent averaged $47.62; its premium over WTI on matched dates averaged $2.20, with the daily Brent − WTI difference ranging from +$0.52 to +$3.91.
Adjusted with CPI-U, the September 2015 average equals $64.40 in September 2026 dollars.
September 2015 summary
| Measure | WTI | Brent |
|---|---|---|
| Monthly average | $45.48 | $47.62 |
| Change vs August 2015 | +$2.61 | +$1.10 |
| Change vs September 2014 | −$47.73 | −$49.47 |
| Highest daily price | $47.12 Sep 16, 2015 | $50.41 Sep 3, 2015 |
| Lowest daily price | $44.07 Sep 14, 2015 | $45.87 Sep 14, 2015 |
| Published daily observations | 21 | 22 |
| Average in September 2026 dollars (CPI-U) | $64.40 | $67.43 |
Monthly averages are EIA's published figures. Real figures use CPI-U for September 2015.
Part of the price episode: 2014–16 price decline
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB (daily, monthly) | $/bbl | Sep 1, 2015 – Sep 30, 2015 | Sep 30, 2015 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB (daily, monthly) | $/bbl | Sep 1, 2015 – Sep 30, 2015 | Sep 30, 2015 |
| 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:2015 daily prices (CSV)