By SHOKU NOREN Team · Facts last verified July 2026 · How we check
In shortIn Japan, sushi is seasonal, and the Edomae calendar shifts month by month. Summer brings baby gizzard shad (shinko) and lean bonito; autumn delivers sanma and matsutake; winter is the peak for cold-fattened yellowtail (kanburi), cod milt (shirako), and pufferfish; spring returns to kohada, clams, and firefly squid. Choose your travel dates by the fish you most want to eat.
Walk into a serious Tokyo sushiya in February and again in August and
you will barely recognize the menu. That is by design. Edomae sushi is
organized around shun — the peak weeks when a fish carries the most
fat and flavor — and the counter's lineup shifts with the water
temperature. As we explain in
what is Edomae sushi, the tradition
treats the seasonal calendar as central to the craft, not a marketing
flourish. Here is roughly how the year moves.
Summer (June–August)
Warm water brings lean, clean-tasting fish and a few celebrated
specialties.
Shinko — the baby gizzard shad, available for only a few summer
weeks and prized above almost anything. See our
shinko guide.
Katsuo (bonito) — the leaner "first bonito" of early summer.
Aji (horse mackerel) and kisu (whiting) — light, bright, and
at their best in the heat.
Autumn (September–November)
Fish begin to fatten as the water cools, and the land contributes too.
Sanma (Pacific saury) — the emblem of Japanese autumn, oily and
cheap in a good year.
Nodoguro (rosy seabass) — the rich white fish that peaks from
autumn into winter; see our nodoguro guide.
Matsutake — not sushi, but the autumn mushroom that dominates
kaiseki menus; see our
matsutake guide.
Winter (December–February)
Widely regarded as the richest stretch of the year, when cold water
thickens fat.
Kanburi (winter yellowtail) — wild buri at peak fattiness; see our
kanburi guide.
Shirako (cod or pufferfish milt) — a creamy cold-weather delicacy;
see our shirako guide.
Fugu (pufferfish) and rich toro tuna round out the season.
Spring (March–May)
The calendar turns back toward delicate, silvery fish and shellfish.
Kohada (gizzard shad) — the grown fish, a benchmark of Edomae
work.
Hamaguri (clam) and torigai (cockle) — shellfish at their
spring peak.
Hotaru-ika (firefly squid) — a brief spring specialty of the Sea
of Japan.
Planning around the calendar
You do not need to memorize every fish to eat well — a good chef will
guide you through an omakase. But if there is
one ingredient you have traveled to taste, let it set your dates, then
book early. The rarest seasonal items sell out first.
Frequently asked
Is sushi in Japan really seasonal?
Yes. Serious Edomae counters build their menus around shun, the peak season when a given fish is at its fattest and most flavorful. The lineup at a good sushiya can change almost weekly, and chefs treat the calendar as central to their craft. What you eat in February differs sharply from what you eat in August, which is part of why regulars return through the year.
What is the best season for sushi in Japan?
There is no single best season, only different peaks. Winter, roughly December through February, is often called the richest, with fatty yellowtail, cod milt, and pufferfish at their height. But summer offers prized shinko, autumn brings sanma and mushrooms, and spring returns to delicate silver fish. Choose your dates by the ingredients you most want to taste.
What sushi fish is best in winter?
Winter is peak season for cold-fattened wild yellowtail (kanburi), cod and pufferfish milt (shirako), pufferfish (fugu), and many rich white fish such as nodoguro. Cold water firms the flesh and thickens the fat, so lean-summer fish taste fuller. Winter is widely regarded as one of the most luxurious stretches on the Japanese seafood calendar.
When is shinko available?
Shinko, the baby form of gizzard shad, appears for only a few weeks in summer, usually from around July. The very first catch can sell for more per kilogram than premium tuna. Because the window is so short and the fish so small and labor-intensive, shinko is treated as a badge of an Edomae chef's skill and timing.
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