Every spring in Japan, before the cherry blossoms open, people start watching. The national weather services issue 桜前線, sakura zensen — the cherry blossom front — a forecast that tracks the bloom's progress northward through the country, city by city, week by week. Offices and families book spots under their favorite trees weeks in advance. You plan your schedule around a flower.

This sounds excessive until you have actually experienced it. Then it makes complete sense.

What hanami is

花見, hanami — literally "flower viewing" — is the practice of gathering under blooming cherry trees to eat, drink, and be together. It is one of the most deeply embedded seasonal rituals in Japanese life, with roots going back to the Nara period, when the aristocracy gathered to appreciate the blossoms. Over time it became a practice for everyone — schoolchildren, families, office colleagues, old friends, strangers sharing a park.

The format is simple: you find a spot under the trees, you spread out a blanket, you bring food and drinks, and you sit for a few hours in the company of people you care about. A 花見弁当, hanami bento, packed carefully for the occasion. Sakura-flavored sweets. Beer and sake and tea. The petals falling around you while you eat.

Why it matters as much as it does

Part of what makes 花見 so emotionally significant is the shortness of the window. Cherry blossoms in full bloom last roughly a week to ten days before the petals begin to fall. The forecast matters because if you miss the peak — if it rains at the wrong time, if you wait one day too long — the moment has passed. You will wait another year.

This is not incidental to the tradition. It is the point. The Japanese concept of 物の哀れ, mono no aware — the bittersweet awareness of impermanence — is nowhere more visible than under a cherry tree in full bloom. The beauty is intensified by knowing it will not last. You gather because the blossoms are here now, and soon they will not be.

The bloom in Tokyo

In the Tokyo area, cherry blossoms typically open in late March and reach full bloom in the first week of April, though this shifts year by year. The most famous spots — Ueno Park, Shinjuku Gyoen, Chidorigafuchi — draw extraordinary crowds at peak bloom. But the most memorable 花見 are often quieter: a neighborhood park, a canal path, a single old tree in a temple courtyard.

The bloom moves north through spring, arriving in Tohoku in late April and Hokkaido in May. There is always somewhere in Japan where the cherries are opening.