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If You Must Choose One Day for Sakura in Tokyo, Choose April 1st

April 1st.
Rain in the morning.

During cherry blossom season, rain is often called “flower-scattering rain” — something people usually dread.

Still, I went out early to see the cherry blossoms along the Sumida River.

Every bud had opened.
It was fair to call it full bloom.

But in some trees, leaves were already beginning to appear.
Petals drifted in the wind,
and the rain-soaked ground was tinted soft pink.

The peak had just passed,
and the blossoms were beginning their slow journey toward the end—

though they would likely remain at their best through the coming weekend.

Despite the rain, it was a day you could easily call “perfect timing.”
And yet, this idea of perfect timing is exactly what makes cherry blossoms so difficult.

Everyone wants to see them at their best.
But the timing changes every year.

And for travelers coming from abroad—
especially those planning their trips months in advance—
this uncertainty becomes even more frustrating.

Cherry blossoms resist prediction.

Still, after watching them in Tokyo for years, I have developed one personal theory.

If I had to bet on one date, I would bet on April 1st.

And despite the date, this is no joke.


In Japan, “Full Bloom” Is Officially Announced

First, something many international visitors may not know:

In Japan, cherry blossom blooming stages are officially announced every year by the
Japan Meteorological Agency.

Cherry blossoms start blooming in warmer regions and gradually move northward across the country.
This movement is often compared to a weather map and is known as the
cherry blossom front.

In Tokyo, the reference tree used for observation is located at
Yasukuni Shrine.

Two key dates are announced:

the opening date (when flowers begin to bloom) and the full bloom date, which typically comes about a week later.


How Much Does the Timing Change?

Let’s look at recent full bloom dates in Tokyo:

  • 2021:  March 22
  • 2022:  March 27
  • 2023:  March 22
  • 2024:  April 4
  • 2025:  March 30
  • Average(1991-2020):  Around March 31

And this year, full bloom came even earlier—March 28.

In recent years, bloom timing has tended to come earlier due to warmer temperatures.

However, in 2024, cooler weather delayed the season, pushing full bloom into April for the first time in seven years.

In other words, the timing can easily shift by more than a week.

That’s exactly what makes planning so difficult.


“Full Bloom” Doesn’t Mean 100% Bloomed

Cherry blossoms in full bloom (not taken today)
Here’s an important detail:

“Full bloom” in Japan does not mean every flower has opened.

It is officially defined as:

 the first day when about 80% of the buds have opened

So even on the “full bloom” day, some buds are still unopened.

From experience, this often leads to a familiar feeling:

“I came on the full bloom day… but it still looks like it’s not quite there yet.”

Even within the same park, differences in sunlight and temperature can cause uneven blooming.

Here’s a slightly cynical thought:

  • “They said it was full bloom, but everything had already fallen”
    vs.
  • “They said it was full bloom, but some buds were still closed”

 The second scenario is much less disappointing.

So perhaps the announcement leans slightly on the early side.


Why April 1st Is a Safe Bet

Taking all of this into account, April 1st sits in a very convenient position:

  • In early years → full bloom to early falling stage
  • In late years → just before or at full bloom

Even in early seasons, by April 1st:

most flowers are fully open, and even if petals have started falling, it still looks like peak bloom

On average, full bloom in Tokyo is around March 31.
But as mentioned earlier, bloom timing has been trending earlier in recent years—and since “full bloom” doesn’t mean 100% bloom, April 1st often ends up being a very well-balanced timing.

A few days after full bloom, you can also enjoy:

  • falling petals drifting in the air
  • “cherry blossom carpets” covering the ground and water
  • a slightly softer, more natural look

In fact, many people consider this “early falling stage” to be the most beautiful moment.

This year, full bloom was recorded on March 28, but even several days later, the scenery still remains impressive.
From experience, cherry blossoms are often enjoyable for about a week after full bloom.


What If You Miss It?

Kawazu-zakura along the Kyu Nakagawa River (Photo taken on February 28)

1. There’s More Than One Type of Cherry Blossom

The most famous variety is
Somei Yoshino.

These trees are clones, meaning they bloom almost simultaneously under the same conditions.

However, there are many other types:

  • Kawazu-zakura (early March)
  • Yaezakura (mid-April)

If you visit places with multiple varieties, such as:

  • Shinjuku Gyoen
  • Ueno Park
  • National Theatre Plaza

 you can enjoy cherry blossoms over a much longer period.

2.Follow the Cherry Blossom Front

Another strategy is to adjust your location.

Simply follow the
cherry blossom front:

  • Already gone in Tokyo → head north (Tohoku / Hokuriku/ Hokkaido)
  • Too early → go west

This greatly increases your chances of catching peak bloom somewhere.

Some enthusiasts even travel across Japan following the blossoms.
You can also take advantage of elevation—going into the mountains can shift the timing.


Final Thoughts

Cherry blossom timing changes every year.

There is no perfect way to predict it months in advance.

And perhaps that is part of the charm.

You can arrive on the official full-bloom day and still find a few unopened buds.

Or arrive a few days later and find petals floating in the air, covering the ground, and drifting along the river.

In other words, “full bloom” is not necessarily the moment when cherry blossoms are most beautiful.

That is why, if someone asks me for one date to remember, I still say:

April 1st.

Not because the calendar knows anything about cherry blossoms.

It’s simply the date I would bet on.

And on April 1st, at least, I have one less thing to worry about:

whether I’m being too optimistic.

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