How much does wakame seaweed cost in Japan?

¥2,436 per 100 g, as of September 2026 — the unweighted average of 81 surveyed cities in the government's retail price survey.

Which Japanese city has the cheapest wakame seaweed?

Among the surveyed cities in September 2026, Kochi was cheapest at ¥1,870 and Otsu the most expensive at ¥3,465.

How much have wakame seaweed prices changed in Japan over the past year?

As of September 2026, +1.2% year on year, measured by Japan's official consumer price index (2020 = 100).

How much have wakame seaweed prices changed in Japan over the past five years?

+25.7% compared with the same month five years earlier. The index now reads 124.8.

When were wakame seaweed prices in Japan at their highest?

The series peaked at 125.3 in December 2025. The latest reading is -0.4% 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).

Food · code 1462

Wakame seaweed price in Japan

わかめ

Average retail price

¥2,436per 100 g

2026-09 · unweighted average of 81 surveyed cities

Surveyed specification: 乾燥わかめ，カットわかめ，湯通し塩蔵わかめ，国産品，袋入り（７～３０ｇ入り），並

Cheapest surveyed city: ¥1,870 Kochi
Priciest surveyed city: ¥3,465 Otsu

Price in your city:

¥2,672per 100 g+9.7% vs national average#42 cheapest of 52 cities

See all 52 cities, cheapest first

#	City	Price (JPY) · per 100 g
1	Kochi	¥1,870
2	Sapporo	¥1,959
3	Matsuyama	¥1,996
4	Oita	¥2,021
5	Yamaguchi	¥2,022
6	Fukuoka	¥2,041
7	Akita	¥2,085
8	Kumamoto	¥2,131
9	Aomori	¥2,162
10	Kitakyushu	¥2,162
11	Hamamatsu	¥2,164
12	Nagano	¥2,172
13	Saitama	¥2,223
14	Nagasaki	¥2,229
15	Takamatsu	¥2,258
16	Kawasaki	¥2,277
17	Gifu	¥2,287
18	Kagoshima	¥2,319
19	Kobe	¥2,321
20	Kyoto	¥2,400
21	Osaka	¥2,400
22	Fukui	¥2,405
23	Sakai	¥2,418
24	Sendai	¥2,431
25	Sagamihara	¥2,453
26	Nagoya	¥2,457
27	Matsue	¥2,468
28	Chiba	¥2,469
29	Yokohama	¥2,485
30	Hiroshima	¥2,495
31	Yamagata	¥2,496
32	Toyama	¥2,505
33	Tsu	¥2,516
34	Niigata	¥2,526
35	Shizuoka	¥2,541
36	Mito	¥2,544
37	Nara	¥2,579
38	Naha	¥2,583
39	Tokushima	¥2,610
40	Fukushima	¥2,650
41	Miyazaki	¥2,653
42	Tokyo (23 wards)	¥2,672
43	Okayama	¥2,676
44	Morioka	¥2,706
45	Saga	¥2,781
46	Utsunomiya	¥2,787
47	Tottori	¥2,820
48	Maebashi	¥2,869
49	Wakayama	¥2,943
50	Kofu	¥3,028
51	Kanazawa	¥3,110
52	Otsu	¥3,465

The surveyed product specification changed in March 2026, so figures before that month are for a different product and are not comparable (¥324 → ¥2,448). Year-on-year change is withheld until 12 months of the new specification are available.

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

Wakame seaweed costs ¥2,436 per 100 g in Japan as of September 2026 — the unweighted average of 81 surveyed cities. Measured as an index, the official CPI for wakame seaweed reads 124.8 (2020 = 100) in September 2026, up 1.2% year on year and up 25.7% over five years.

Wakame seaweed sits in the food group of Japan's CPI basket, with 681 monthly observations from January 1970 to September 2026. The series peaked at 125.3 in December 2025 and bottomed at 15.9 in January 1970; the latest reading is -0.4% against that peak. Against ten years ago it is +39.3%.

Latest CPI

124.8

2026-09 (2020=100)

YoY %

+1.2%

5y change %

+25.7%

Change since 1970-01

+684.9%

Annual average index by year

Annual average consumer price index for Wakame seaweed in Japan (2020 = 100)
Year	Index	YoY %	Months
2015	84.4	+1.9%	12
2016	87.7	+3.9%	12
2017	91.7	+4.6%	12
2018	94.4	+2.9%	12
2019	96.6	+2.3%	12
2020	100.0	+3.5%	12
2021	99.2	-0.8%	12
2022	101.3	+2.1%	12
2023	106.2	+4.8%	12
2024	113.1	+6.5%	12
2025	121.7	+7.6%	12
2026	124.7	+2.5%	9

Average of the monthly index values in each year (2020 = 100). Blank months are excluded.

Average retail price by month

2026-09	¥2,436
2026-08	¥2,430
2026-07	¥2,429
2026-06	¥2,448
2026-05	¥2,460
2026-04	¥2,448
2026-03	¥2,454

Frequently asked questions

How much does wakame seaweed cost in Japan?: ¥2,436 per 100 g, as of September 2026 — the unweighted average of 81 surveyed cities in the government's retail price survey.
Which Japanese city has the cheapest wakame seaweed?: Among the surveyed cities in September 2026, Kochi was cheapest at ¥1,870 and Otsu the most expensive at ¥3,465.
How much have wakame seaweed prices changed in Japan over the past year?: As of September 2026, +1.2% year on year, measured by Japan's official consumer price index (2020 = 100).
How much have wakame seaweed prices changed in Japan over the past five years?: +25.7% compared with the same month five years earlier. The index now reads 124.8.
When were wakame seaweed prices in Japan at their highest?: The series peaked at 125.3 in December 2025. The latest reading is -0.4% 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).