Hijiki seaweed
Average retail price
- Cheapest surveyed city
- ¥1,665 Matsue
- Priciest surveyed city
- ¥3,115 Utsunomiya
Retail price survey conducted by the Statistics Bureau of Japan. This is a survey average, not a shop price — actual prices vary by store. 総務省統計局 小売物価統計調査 · Surveyed items and specifications
Key facts
Hijiki seaweed costs ¥2,273 per 100 g in Japan as of August 2026 — the unweighted average of 47 surveyed cities, flat from a year earlier. Measured as an index, the official CPI for hijiki seaweed reads 121.2 (2020 = 100) in August 2026, down 0.3% year on year and up 21.8% over five years.
Hijiki seaweed sits in the food group of Japan's CPI basket, with 260 monthly observations from January 2005 to August 2026. The series peaked at 122.4 in October 2025 and bottomed at 47.1 in January 2005; the latest reading is -1.0% against that peak. Against ten years ago it is +59.3%.
Annual average index by year
| Year | Index | YoY % | Months |
|---|---|---|---|
| 2015 | 74.9 | +1.4% | 12 |
| 2016 | 77.0 | +2.8% | 12 |
| 2017 | 85.4 | +10.9% | 12 |
| 2018 | 97.8 | +14.5% | 12 |
| 2019 | 99.5 | +1.7% | 12 |
| 2020 | 100.0 | +0.5% | 12 |
| 2021 | 99.9 | -0.1% | 12 |
| 2022 | 100.6 | +0.7% | 12 |
| 2023 | 106.2 | +5.6% | 12 |
| 2024 | 115.9 | +9.1% | 12 |
| 2025 | 121.0 | +4.4% | 12 |
| 2026 | 121.1 | +0.1% | 8 |
Average of the monthly index values in each year (2020 = 100). Blank months are excluded.
Average retail price by month
| 2026-08 | ¥2,273 |
|---|---|
| 2026-07 | ¥2,264 |
| 2026-06 | ¥2,281 |
| 2026-05 | ¥2,272 |
| 2026-04 | ¥2,285 |
| 2026-03 | ¥2,279 |
| 2026-02 | ¥2,287 |
| 2026-01 | ¥2,282 |
| 2025-12 | ¥2,284 |
| 2025-11 | ¥2,285 |
| 2025-10 | ¥2,290 |
| 2025-09 | ¥2,277 |
| 2025-08 | ¥2,274 |
Frequently asked questions
- How much does hijiki seaweed cost in Japan?
- ¥2,273 per 100 g, as of August 2026 — the unweighted average of 47 surveyed cities in the government's retail price survey.
- Which Japanese city has the cheapest hijiki seaweed?
- Among the surveyed cities in August 2026, Matsue was cheapest at ¥1,665 and Utsunomiya the most expensive at ¥3,115.
- How much have hijiki seaweed prices changed in Japan over the past year?
- As of August 2026, -0.3% year on year, measured by Japan's official consumer price index (2020 = 100).
- How much have hijiki seaweed prices changed in Japan over the past five years?
- +21.8% compared with the same month five years earlier. The index now reads 121.2.
- When were hijiki seaweed prices in Japan at their highest?
- The series peaked at 122.4 in October 2025. The latest reading is -1.0% against that peak.
- What is the difference between the index and the yen price?
- This page carries two kinds of number. The index (2020 = 100) measures percentage change over time and is not a yen amount; the yen figure is an actual average retail price from the government's retail price survey. Source: 総務省統計局 消費者物価指数 (e-Stat table 0003427113, nationwide, monthly).