Refined Products · Daily Price Assessment

Japan Naphtha Price — C+F Japan

The latest C+F Japan naphtha assessment is $863.00 per metric ton for 4 September 2026, up $8.00 from the previous daily assessment (3 Sep 2026). Explore the historical price chart and recent daily assessments below.

Latest Japan Naphtha Price

Latest price

863.00 USD/mt

Assessment date

4 September 2026

Daily assessment · C+F Japan

Published range

858.75 – 867.25 USD/mt

Basis: C+F Japan
Unit: USD/mt
Frequency: Daily
CS code: CS-JPN-NAPH

What This Indicator Measures

Daily C+F Japan naphtha cargo assessment in USD/mt — the delivered value at Japanese discharge ports, including freight from the loading area.

Naphtha: A physical price for naphtha, a light distillate used as petrochemical steam-cracker feedstock and gasoline blendstock. Regional series differ by delivery term and unit (USD/bbl in Singapore, USD/mt in Europe and Japan).

What the source does not state for this series

The source table names this series as “Naphtha” and does not print a fuller specification; none is assumed here.

Specification · product family only

Open-specification naphtha; paraffin content and density follow the source assessment and are not reproduced here.

Basis: C+F Japan

C+F Japan: cost and freight to Japan; the loading origin is not fixed by the quote.
C+F (cost and freight): the price includes freight to the named destination, in this case the Japan discharge area; it is not a loading-port value.
Japan on a C+F basis means product delivered to Japanese discharge ports; the price includes freight from the loading area.

Unit: USD/mt

USD/bbl values (Singapore, Arab Gulf, Fujairah) and USD/mt values (Europe, Japan naphtha) cannot be compared without a product-specific density conversion; the site does not convert them.
Published assessments are a low–high range with a midpoint; charts and monthly statistics use the midpoint only.

Japan Naphtha Price Chart

Available history 26 Jan 2026 through 4 Sep 2026 (124 observations). Monthly averages below use the midpoint of each published assessment.

C+F Japan·Daily (2026-09-04)

Naphtha — Japan

Assessed Mid (mt)

$863.00

Day: +8.00 (+0.94%)

Computed Summary

Statements below are calculated by CommodityScope from the loaded history only. Each one names its period and method; none explains why a value moved.

The latest assessment of $863.00/mt on 4 Sep 2026 is up $8.00 (+0.9%) from the previous daily assessment (3 Sep 2026).
Method: Computed by CommodityScope as the difference between the two most recent loaded daily observations (1 calendar day apart).
It is 8.9% above the August 2026 average of $792.71/mt, the most recent completed month with 20 daily observations.
Method: Arithmetic mean of the published daily midpoints in August 2026. Partial months are excluded from this comparison.
Over the loaded history (26 Jan 2026 – 4 Sep 2026), the highest assessment was $1207.50/mt on 31 Mar 2026 and the lowest was $573.25/mt on 26 Jan 2026.
Method: Minimum and maximum of the published midpoint over the loaded history (26 Jan 2026 – 4 Sep 2026, 124 observations). This is not an all-time record.

Price Changes and Historical Range

Published changes are copied from the source edition. Computed changes are CommodityScope calculations between loaded daily observations; the two are shown separately and may differ when an intermediate edition is not loaded.

Day change (as published)

+8.00

Source edition, 4 Sep 2026

Computed change

+8.00(+0.9%)

vs previous daily assessment (3 Sep 2026)

vs last completed month

+70.29(+8.9%)

vs August 2026 average (20 obs.)

Loaded range (mid)

573.25 – 1207.50

26 Jan 2026 – 4 Sep 2026, 124 obs.

Monthly Japan Naphtha Prices

Average, minimum and maximum of published midpoints in each calendar month. These are not the daily assessed low–high bands. Incomplete latest months are marked month to date.

Month	Average mid	Min mid	Max mid	Observations
September 2026Month to date	856.13	848.50	863.00	4
August 2026	792.71	713.00	859.00	20
July 2026	779.11	664.50	855.25	7
June 2026	711.51	634.00	807.63	18
May 2026	939.54	754.25	1043.00	17
April 2026	1027.82	900.00	1161.50	18
March 2026	1002.76	715.50	1207.50	20
February 2026	608.65	581.38	636.63	17
January 2026	584.58	573.25	596.00	3

Recent Daily Assessments

Last 30 published assessments. The chart above is interactive; this table is the HTML history.

Date	Low	High	Mid	Δ day (published)
2026-09-04	858.75	867.25	863.00	+8.00
2026-09-03	850.75	859.25	855.00	-3.00
2026-09-02	853.75	862.25	858.00	+9.50
2026-09-01	844.25	852.75	848.50	-10.50
2026-08-31	854.75	863.25	859.00	+31.75
2026-08-28	823.00	831.50	827.25	+16.75
2026-08-27	806.25	814.75	810.50	+13.75
2026-08-26	792.50	801.00	796.75	-17.25
2026-08-25	809.75	818.25	814.00	-11.50
2026-08-24	821.25	829.75	825.50	-1.25
2026-08-21	822.50	831.00	826.75	+3.00
2026-08-20	819.50	828.00	823.75	+12.75
2026-08-19	806.75	815.25	811.00	+13.00
2026-08-18	793.75	802.25	798.00	+9.75
2026-08-17	784.00	792.50	788.25	+7.38
2026-08-14	776.25	785.50	780.88	+13.75
2026-08-13	762.50	771.75	767.13	-12.13
2026-08-12	770.50	788.00	779.25	-30.25
2026-08-11	799.75	819.25	809.50	+48.25
2026-08-07	751.50	771.00	761.25	+45.00
2026-08-06	706.50	726.00	716.25	+3.25
2026-08-05	703.25	722.75	713.00	-52.13
2026-08-04	750.50	779.75	765.13	-16.00
2026-08-03	766.50	795.75	781.13	-55.38
2026-07-31	821.25	851.75	836.50	-37.25
2026-07-29	831.50	862.00	846.75	+21.75
2026-07-21	842.00	868.50	855.25	+15.50
2026-07-20	828.00	851.50	839.75	+39.00
2026-07-10	725.75	736.25	731.00	-6.88
2026-07-07	675.25	684.75	680.00	+15.50

What This C+F Japan Price Represents

This page tracks the daily naphtha on a C+F Japan basis, quoted in USD/mt. Figures are CommodityScope Indicators synthesized from loaded market editions. They are not a live quote and not a republication of a price-reporting agency table.

How to use this series

Follow cracker-feedstock costs by region; compare with gasoline in the same basis to read blending economics.

What it is not suitable for

Converting between USD/bbl and USD/mt without a density assumption.

Compare With

Each comparison states why the series are related and whether the latest values can be subtracted directly (same unit, currency and assessment date). Where they cannot, the values are shown side by side without a difference.

Series	Why compare	Latest	Difference (this − other)
Naphtha — Arab Gulf FOB Arab Gulf · USD/mt · daily	FOB Arab Gulf naphtha in the same unit: a main supply origin; the gap contains freight and timing. Different delivery terms (C+F vs FOB); the gap includes freight, insurance or handling and is not a trading margin.	732.86 4 Sep 2026	+130.14
Naphtha — Singapore FOB Singapore · USD/bbl · daily	FOB Singapore naphtha in USD/bbl: different unit, shown side by side only. Different units (USD/mt vs USD/bbl); values are not directly subtractable without a density or unit conversion. Different delivery terms (C+F vs FOB); the gap includes freight, insurance or handling and is not a trading margin.	92.75 4 Sep 2026	not directly comparable
Naphtha Japan Forward Singapore paper · USD/mt · daily	Swap curve referencing this C+F Japan naphtha market; compare the M1 tenor with the physical value, not later tenors.	864.00 4 Sep 2026	-1.00

Sources and Methodology

CommodityScope publishes this page as a derived indicator from loaded physical-market editions. It does not republish a price-reporting agency table and does not claim authorship of the underlying source assessments. Update cadence follows the daily series. Internal series code CS-JPN-NAPH.

CS Indicator policy and derived-data rules.

Sources for the explanations on this page

ICC Incoterms® 2020 rules (FOB, CFR, CIF, FCA definitions) — Meaning of the delivery terms used in the basis column.
CommodityScope methodology — derived-indicator rules and computed statistics

Origin of the numbers: loaded market editions (see Basis and Unit above). Origin of the computed statistics: CommodityScope, from the loaded history, using the rules on the methodology page.