Every spring, the same questions circle the globe: when will Japan's cherry blossoms open, where should you stand to see them, and is it true they keep arriving earlier? The internet answers with a blizzard of "forecasts," most of them repeating figures without a source or an as-of date. This page does the opposite. It collects the numbers that actually anchor the season — the average bloom dates the Japan Meteorological Agency has tracked since the 1950s, the south-to-north wave that carries the blossom front up the archipelago, the 1,200-year Kyoto record that has become a touchstone in climate science, and the often-misreported truth about who issues the forecast — each with a source you can cite. It is built to be a reference, not a countdown.
Quick Answer
Japan's cherry blossoms (mostly the Somei Yoshino variety) open on a rolling south-to-north schedule. In an average year, the front reaches Fukuoka around March 22, Tokyo and Kyoto in the last week of March, and Sapporo in early May — a spread of roughly six weeks across the country (source: Japan Meteorological Agency averages). "First bloom" (kaika) and "full bloom" (mankai) are separated by about a week, and the display is largely over a week after that. Two things surprise most visitors. First, the JMA stopped issuing bloom forecasts in 2010 — it still records the actual dates, but the predictions you read each spring now come from private weather companies. Second, the blossoms really are trending earlier: Kyoto's full-bloom date, reconstructed from court diaries back to the 9th century, was broadly stable for a thousand years and has shifted markedly earlier since the 1800s, reaching its earliest date in the ~1,200-year record in 2023 (March 25) — a day ahead of the March 26, 2021 mark that had itself broken a centuries-old record (source: Osaka Metropolitan University / Yasuyuki Aono dataset). The practical read for a traveler: plan around the averages, treat each season's forecast as a live estimate, and build in a few days of slack.
Cite this page: Tabilane. "Japan Cherry Blossom Statistics: Bloom Dates & Trends." tabilane.com. https://tabilane.com/japan-cherry-blossom-statistics
How bloom is measured — first bloom vs full bloom
Before any date means anything, it helps to know exactly what is being measured. Japan's cherry-blossom calendar rests on a national network of designated sample trees (標本木, hyōhonboku) that the Japan Meteorological Agency has observed under a consistent standard since 1953. The rules are precise:
- First bloom / opening (kaika) is declared when five or six blossoms have opened on the local sample tree.
- Full bloom (mankai) is declared when roughly 80% or more of the buds on that tree are open.
The observed species matters too. The headline dates almost always refer to Somei Yoshino (Prunus × yedoensis), the pale-pink clone planted in parks and along riverbanks across most of Japan. Because Somei Yoshino are propagated by grafting, the trees in a given area are genetically near-identical — which is why a whole city can seem to bloom in unison within a few days. Where Somei Yoshino does not grow, the JMA observes a locally appropriate species instead: subtropical Hikanzakura (Prunus campanulata) in Okinawa and the Amami islands, and hardy Ezoyamazakura (Prunus sargentii) in northern Hokkaido. This is one reason the "cherry blossom season" cannot be reduced to a single national date — the calendar is stitched together from different trees in very different climates.
Worth quoting: Japan's bloom dates are not estimates from a model — they are declared by human observers when a specific sample tree hits a fixed threshold (5–6 open blossoms for kaika, ~80% for mankai).
Photo: Guilhem Vellut, CC BY 2.0, via Wikimedia Commons — cherry blossoms at Tokyo's Yasukuni Shrine, whose Somei Yoshino is the sample tree the JMA watches to declare the capital's opening date.
When sakura bloom — Japan's south-to-north wave
The cherry-blossom front (sakura zensen) moves up the country as spring warmth spreads. It begins, in a sense, in Okinawa in January, but that is a different species (Hikanzakura) on a different clock; the familiar Somei Yoshino season runs from late March in the south to early May in the far north. The table below gives the JMA's long-term average opening and full-bloom dates for representative cities, ordered south to north, so the wave is visible at a glance. (For where to actually stand under these trees — the parks, the riverbanks, the quiet-lane spots — our cherry blossom guide maps them city by city; this page is about the dates.)
Photo: public domain, via Wikimedia Commons — Hikanzakura (Prunus campanulata), the deep-pink subtropical cherry the JMA observes in Okinawa; its January bloom runs on a different clock from the pale Somei Yoshino that sets the mainland calendar.
| City (south → north) | Avg. first bloom (kaika) | Avg. full bloom (mankai) |
|---|---|---|
| Fukuoka | March 22 | March 31 |
| Hiroshima | March 25 | April 3 |
| Osaka | March 27 | April 4 |
| Kyoto | March 26 | April 4 |
| Nagoya | March 24 | April 2 |
| Tokyo | March 24 | March 31 |
| Kanazawa | April 3 | April 8 |
| Sendai | April 8 | April 13 |
| Hakodate | April 28 | May 2 |
| Sapporo | May 1 | May 6 |
Source: Japan Meteorological Agency 1991–2020 long-term averages (平年値) for Somei Yoshino sample trees, confirmed against the JMA primary tables at data.jma.go.jp/sakura. Averages are periodically re-based on recent decades.
Two patterns are worth noting. Full bloom follows first bloom by about a week, and the open display lasts only another week or so before petals begin to fall — so the practical viewing window at any one spot is short, often 7 to 10 days. And the year-to-year swing is real: a mild February and March can pull the opening a week early, a cold snap can push it a week late, which is exactly why averages are a planning tool, not a promise.
How the forecast works — and who makes it
Here is the single most-misreported fact about the Japanese cherry blossom season, and the one worth getting right: the Japan Meteorological Agency no longer issues bloom forecasts. The JMA continues to observe and record the official opening and full-bloom dates through its sample-tree network, but it discontinued its own bloom predictions in 2010 (a widely reported programming error that produced wrong predictions in 2007 is often cited as a contributing factor). The forecasts you actually read each spring come from private weather companies, chief among them Weathernews, the Japan Weather Association (which runs tenki.jp), Weathermap, and Nihon Kishou. Weathernews alone publishes granular forecasts for well over a thousand sample trees and famous viewing sites nationwide, refining them with staff observations and user-submitted photos.
The forecasting itself leans on accumulated temperature. Two rules of thumb are widely used:
- The 600-degree rule: first bloom tends to occur once the cumulative daily high temperature since February 1 reaches about 600°C.
- The 400-degree rule: a related heuristic that uses the cumulative daily mean temperature since February 1 reaching about 400°C.
Neither is a law of nature — dormancy, winter chilling, and local microclimate all matter — but they explain why an unusually warm late winter reliably pulls the season forward. The key takeaway for a reader: any specific date you see for an upcoming season is a live estimate that private forecasters update every year, not an official government prediction fixed in advance. Treat this season's forecast as a moving number and check it close to your trip.
Worth quoting: Since 2010, Japan's government agency records the sakura but does not predict it — the annual "official forecast" is a private-sector product, updated each season.
Are cherry blossoms blooming earlier? — the long-term trend
This is where the data becomes genuinely remarkable. Because full-bloom dates were noted in the diaries and chronicles of emperors, aristocrats, and monks in the old capital, researcher Yasuyuki Aono (Osaka Metropolitan University) reconstructed Kyoto's cherry full-bloom dates back to 812 CE — one of the longest annual biological records anywhere in the world. The reconstruction refers largely to mountain cherry (Yamazakura) rather than modern Somei Yoshino, but the signal is clear and consistent. Aono died in 2025; the 1,200-year series is now being carried on by environmental biophysicist Genki Katata.
For roughly a thousand years — from the 9th century to about 1800 — Kyoto's average full-bloom date hovered in mid-April and was broadly stable. Then, from the 1800s onward, the dates begin to slide steadily earlier, a shift most researchers attribute to warming, amplified in a city by the urban heat-island effect. The trend reached a milestone in 2021, when Kyoto hit full bloom on March 26 — at the time the earliest date in the entire 1,200-year record, beating a pre-modern mark of March 27, 1409 (source: Aono dataset; widely reported by the Washington Post, NBC News, and the Smithsonian). The record did not stand long: in 2023 Kyoto reached full bloom on March 25, a day earlier still and the earliest date in the whole reconstructed series (Aono dataset). It is this collision of a millennium-long record with a modern warming signal — a record broken twice in three years — that makes the Kyoto series such a frequently cited touchstone in climate reporting.
| Kyoto full-bloom record | Value | Source |
|---|---|---|
| Earliest date on record | March 25, 2023 | Aono dataset (Osaka Metropolitan University) |
| Previous record | March 26, 2021 | Aono dataset |
| Earliest pre-modern record | March 27, 1409 | Aono dataset |
| Record begins | 812 CE | Aono dataset (court diaries & chronicles) |
| Pattern | Stable ~812–1800, then trending earlier | Aono dataset / climate research |
Photo: Japanexperterna.se, CC BY-SA 3.0, via Wikimedia Commons — hanami in Kyoto's Maruyama Park; the old capital's full-bloom dates form the 1,200-year record behind the trend above.
Reading each year's forecast — the 2027 season and beyond
Because the averages above describe a typical year, they are the right tool for planning months ahead — but no single spring is average. As a season approaches, the private forecasters begin issuing dated predictions (usually from January), then update them every few weeks as temperature data accumulates. The sensible way to use them:
- Anchor on the average for your city from the table above.
- Add a buffer of roughly ±1 week, since a warm or cold late winter routinely moves the opening.
- Check a live private forecast (Weathernews, tenki.jp/Japan Weather Association, Weathermap) in the weeks before you travel, and expect it to move.
This page deliberately does not print a fixed bloom date for any upcoming season, because that number does not exist until the forecasters compute it and would be stale within weeks. What is durable — the averages, the definitions, the wave, the long-term trend — is what you will find here; the live number belongs to this season's forecast.
Planning around the bloom — timing and early booking
The short viewing window has a practical consequence that catches many first-time visitors: demand for accommodation in the top hanami cities peaks hard and early. Rooms in central Kyoto and Tokyo for late March and early April are often booked out months in advance, and prices climb into the season — a pattern the numbers on Japan travel costs make plain (see Japan Travel Cost Statistics for the weak-yen and peak-season effect). If your trip is built around the blossoms, the averages give you a target date; treat the booking as the thing to lock in first and the itinerary as the thing to keep flexible. A useful hedge is to plan a route that can shift north or south by a few days — chasing the front to a slightly later city if an early warm spell moves the peak, or dropping south if a cold snap delays it.
Disclosure: This post contains affiliate links. If you book through them, we may earn a small commission at no extra cost to you.
- Compare hotels in Kyoto on Agoda — the top hanami city, where late-March and early-April rooms book out months ahead
- Compare hotels in Tokyo on Agoda — where the Meguro River and Ueno Park peak in the same short window
Beating the crowds — sakura on the quiet lanes
The same concentration that drives up prices also drives up crowds: the marquee spots — Kyoto's Philosopher's Path, Tokyo's Meguro River, Osaka Castle — draw the season's heaviest foot traffic in the same ten-day window every year. The data offers a way out. Because the bloom front is predictable, you can use it to go against the crowd rather than into it: arrive at dawn, or follow the same front to less-visited regions where the same trees bloom a week or two later with a fraction of the people. For where and how to do exactly that, our companion guide maps the routes — see Japan Cherry Blossoms Without the Crowds for the quiet-lane spots, Philosopher's Path at dawn for beating the Kyoto rush, and Hirosaki Castle for a northern bloom that peaks in late April, long after the Honshu season is over. If crowds are your main worry, our guide to avoiding the crowds in Kyoto and the Tōhoku travel guide both point toward the quieter end of the season.
Sources & methodology
This page separates three kinds of data and labels each, because conflating them is the most common error in English-language sakura coverage:
- (A) Official observation — the average and annual opening/full-bloom dates come from the Japan Meteorological Agency's sample-tree network (生物季節観測), observed under a consistent standard since 1953. These are records, not predictions. City averages are periodically re-based on recent decades; the values here should be read as long-term JMA averages and confirmed against the JMA sample-tree data tables for the exact base period.
- (B) Forecasts — dated bloom predictions for an upcoming season are private-sector products (Weathernews, Japan Weather Association/tenki.jp, Weathermap, Nihon Kishou). The JMA discontinued its own bloom forecasts in 2010. Any forward-looking date is an estimate updated each season.
- (C) Historical / academic record — the 1,200-year Kyoto series is the work of Yasuyuki Aono (Osaka Metropolitan University), reconstructed from historical diaries and published in the peer-reviewed literature; the record earliest full bloom (March 25, 2023), the prior March 26, 2021 mark, and the long-term trend all derive from that dataset (archived at NOAA Paleoclimatology).
As-of: 2026. Averages reflect JMA long-term norms for Somei Yoshino; the Kyoto record reflects the Aono dataset as most recently published. Perishable items (each season's forecast, the current base period for averages, the latest year appended to the Kyoto series) are re-verified at each annual refresh.
Frequently asked questions
When do cherry blossoms bloom in Japan? On average, the Somei Yoshino front reaches Fukuoka around March 22, Tokyo and Kyoto in the last week of March, and Sapporo in early May, with full bloom about a week after first bloom. Individual years vary by roughly a week either way. For where to actually see them, see our cherry blossom guide.
What's the difference between first bloom and full bloom? "First bloom" (kaika) is declared when five or six blossoms open on the local sample tree; "full bloom" (mankai) when about 80% of the buds are open. Full bloom typically follows first bloom by roughly a week, and the display lasts about a week more.
Are cherry blossoms blooming earlier? Yes. Kyoto's full-bloom dates, reconstructed back to 812 CE, were broadly stable for about a thousand years and have trended earlier since the 1800s, reaching their earliest date on record — March 25 — in 2023, just ahead of the March 26, 2021 mark. Researchers attribute the shift to warming and the urban heat-island effect.
Does the Japan Meteorological Agency forecast the cherry blossoms? No. The JMA records the official opening and full-bloom dates but stopped issuing bloom forecasts in 2010. The predictions you read each spring come from private weather companies such as Weathernews and the Japan Weather Association.
How long does the bloom last? At a single location, roughly 7 to 10 days from first bloom through full bloom to the start of petal fall — one reason the peak-viewing window is so short and accommodation books up early.
When should I book a cherry blossom trip? Well ahead. Rooms in Kyoto and Tokyo for late March and early April sell out months in advance and prices rise into the season, so lock in accommodation early and keep the itinerary flexible enough to follow the front.
A quieter spring, by the numbers
Read together, the numbers tell a hopeful story for anyone who dreads the crush. The bloom front is predictable, the peak window is short, and the crowds pile into the same famous spots on the same few days — which means the same data that everyone uses to converge can be used to do the opposite. Know the averages, follow the front north or south by a week, start at dawn, and Japan's quiet lanes hand you the same blossoms with room to breathe. For the where-to-go half of the story, our cherry blossom guide takes it from here; for the wider picture of when Japan is busiest and what a trip costs, see Japan Overtourism Statistics and Japan Travel Cost Statistics.
Cover photo: Photos of Japan, CC0, via Wikimedia Commons — Somei Yoshino in full bloom along Tokyo's Meguro River at night, lit by bonbori lanterns.