Timetable · Annual Schedule
山形県 · Calendar 2026
Seasonal windows and dated events, month by month. Entry pages are in Traditional Chinese; event names appear in their original Japanese.
January
6 itemsJanuary is peak snow season here: Zao's frost-covered trees have formed, the Zao Onsen ski area is fully open, and night light-up tours run after dark. Ginzan Onsen rewards an overnight stay. Leave slack for snow-related delays.
February
6 itemsFebruary sits fully inside the frost-tree window, making Zao's snow monsters and the night tour the safest winter bet of the year. Ginzan Onsen is an overnight target, not a day trip. Shonai sweet shrimp and pufferfish are in season.
March
4 itemsMarch is the tail of winter: the Zao frost trees are fading, so go early in the month rather than late. Skiing at Zao Onsen runs well past the ice, Ginzan Onsen's snow scenery is winding down, and Shonai sweet shrimp is still around.
April
4 itemsApril is an odd but useful pairing: Gassan's ski area opens for spring snow just as the Zao Okama crater road reopens on the Yamagata side. The Yonezawa Uesugi Festival starts at month's end, so those dates book out first.
May
4 itemsEarly May is shaped by the Yonezawa Uesugi Festival and the holiday crowding around it: book Yonezawa lodging early or skip those days. Zao Onsen's ski season ends this month while Gassan carries on, and the Zao Okama road is open.
June
7 itemsJune is the eating month: Sato Nishiki cherries arrive alongside Shonai rock oysters, Mogami River sweetfish and the local cold ramen. Yudonosan is open to visitors and Gassan's ski area still runs, but rainy-season cloud can erase the Zao Okama view.
July
8 itemsJuly is the Dewa Sanzan month: Gassan Shrine and Yudonosan are both open, so a full three-mountain route works now. Gassan's ski area closes during July. Cherries finish while rock oysters, sweetfish and cold ramen hold the table.
August
10 itemsAugust's fixed point is the Akagawa fireworks in Tsuruoka: every seat is ticketed, so no ticket means no plan, and lodging tightens around it. Otherwise it is high summer — cold ramen, dadacha beans, Delaware grapes, and the last rock oysters.
September
10 itemsSeptember is harvest month: new-crop Haenuki and Tsuyahime rice land while dadacha beans, grapes and Mogami sweetfish make their final run. Gassan Shrine and Yudonosan stay open; the Dewa Sanzan autumn ascetic training falls early and is practice, not spectacle.
October
9 itemsOctober is the easiest month to plan: autumn colour, the Yamadera light-up, Mogami River boat rides, and the Zao Okama road still open. The Yamagata documentary film festival also lands here, though not every year. La France pears and Shonai fugu are in season.
November
7 itemsThe first half of November still catches autumn colour — the Yamadera light-up and the Mogami River boats — but the Zao Okama road and Yudonosan close during the month, so front-load them. After that it turns quiet and food-led.
December
7 itemsDecember opens the snow season without finishing it: Zao Onsen's ski area starts first, while the frost trees and their night tour only come together late in the month. Ginzan Onsen's snow season begins now. La France pears give way to Shonai shrimp and fugu.