Japan is where everyone wanted to go this year. The country welcomed a record 42.7 million visitors in 2025, and March 2026 was the busiest March it has ever had. March is when the cherry blossoms open. The catch is that nobody can tell you today when the trees will open in spring 2027. Flights and hotels for late March are booked in autumn and winter, the first forecasts only appear around the turn of the year, and the bloom itself can land a week or two either side of its average. People who see the blossom at its best are rarely the luckiest. They are the ones who booked around the average, kept a few days loose, and had a working phone in their pocket to follow the forecast as it moved. This guide gives you the official average dates for eleven cities from the Japan Meteorological Agency, shows how far spring 2026 drifted from them, and explains how to plan around that drift. Then it covers the part we know best: how much data a blossom trip really uses, which Japan plan fits it, and the latest sensible date to buy your eSIM for each part of the season.
When the trees open: the average dates, city by city
The Japan Meteorological Agency watches a sample cherry tree in each city and records two dates every spring. The first is first bloom, when the tree has five or six open flowers. The second is full bloom, when about eight in ten of its buds have opened. Averaged over thirty years, those dates are the best planning anchor anyone has.
Below are the official averages for the period 1991 to 2020, for the Somei Yoshino trees most visitors come to see. The pattern is a front that starts in the south and west in late March and reaches Hokkaido in May, five to six weeks later. Okinawa runs on a different calendar altogether: its local variety flowers in mid-January.
Use these as the middle of your planning, not as promises. The next section shows how far a single spring can move.
- Fukuoka: first bloom 22 March, full bloom 31 March
- Tokyo: first bloom 24 March, full bloom 31 March
- Nagoya: first bloom 24 March, full bloom 2 April
- Hiroshima: first bloom 25 March, full bloom 3 April
- Kyoto: first bloom 26 March, full bloom 4 April
- Osaka: first bloom 27 March, full bloom 4 April
- Kanazawa: first bloom 3 April, full bloom 8 April
- Sendai: first bloom 8 April, full bloom 13 April
- Aomori: first bloom 22 April, full bloom 26 April
- Sapporo: first bloom 1 May, full bloom 6 May
- Naha, Okinawa: first bloom 16 January, from a different, earlier variety
Spring 2026 showed how far one season can drift
In 2026 Tokyo reached first bloom on 19 March, five days ahead of its average, and full bloom on 28 March, three days ahead. That is a normal sort of year. The north was not. Sapporo opened on 18 April, thirteen days early, and reached full bloom on 24 April instead of 6 May. Anyone who had booked Hokkaido for the first week of May on the strength of the average arrived to trees that were already past their best.
The order between cities can change too. On average Tokyo and Fukuoka reach full bloom on the same day. In 2026 Tokyo was there on 28 March and Fukuoka not until 3 April, six days later. Kyoto and Osaka share an average full-bloom date of 4 April, and in 2026 they were four days apart.
None of this makes the averages useless. It means a trip built on them needs some give. A week either side is ordinary, and the further north you go, the bigger the swing tends to be.
First bloom, full bloom, and the week you are aiming for
First bloom is the starting gun, not the show. A tree with five open flowers looks like a tree with five open flowers. What people travel for is the days around full bloom, when the branches are covered and the petals start to fall.
On the agency's averages, the gap between first bloom and full bloom is seven days in Tokyo, eight in Osaka, nine in Kyoto and five in Sapporo. The further north, the faster the trees go from first flower to full canopy, which leaves even less margin in Tohoku and Hokkaido.
So the useful target is not the first-bloom date on a forecast. It is the few days on either side of full bloom in the city you care about most. If you have to pick one city to be in on the best day, put it in the middle of your trip, not at the start or the end, so a drift in either direction still lands inside your dates.
Book around the average, then let the forecast steer
You will book flights long before any forecast exists, so book around the averages above and build the trip in three parts: a fixed start, a fixed end, and a flexible middle. The flexible middle is the part you rearrange once you know where the bloom actually is.
Private weather companies in Japan publish the cherry blossom forecasts, usually starting around the turn of the year, and revise them regularly until the trees open. In the weeks before you fly they get steadily more reliable, and once you are in Japan the daily bloom reports tell you which parks are early and which are late.
That is when your phone does the work. Moving a night from Tokyo to Kyoto, booking a train seat, finding which riverside in Osaka is at its peak today, checking the crowd at a famous spot before you cross the city for it: every one of those decisions is made on the street, on mobile data, often several times a day. A trip that follows the bloom runs on a live connection in a way an ordinary city break does not.
Two practical habits help. Keep the flexible nights in hotels with free cancellation, and save the forecast pages for your cities on your home screen before you leave, so checking them is one tap rather than a search.
A blossom trip uses more data than an ordinary Japan trip
Our Japan guide puts a typical sightseeing trip at around half a gigabyte a day, mostly maps, translation and messaging. Cherry blossom season changes one thing about that, and it is a big one: video.
People film the blossom. They post it to Instagram and TikTok, send clips to the family group chat, and make video calls home from under the trees. Scrolling Instagram or TikTok on its own uses roughly half a gigabyte to a gigabyte an hour. A video call is around 300 MB an hour. And when your phone uploads 4K video to the cloud over mobile data, every minute of footage can cost more than 300 MB.
That last one is where plans disappear. Switch cloud backup to Wi-Fi only while you are still at home, and the hotel connection will upload everything overnight at no cost to your plan. With that one setting changed, a blossom trip where you post every day sits comfortably at about a gigabyte a day. Leave it on, and a single afternoon in a famous park can use more than the rest of the week.
- Maps, translation and messaging only: about half a gigabyte a day
- Posting photos and short clips every day: about a gigabyte a day
- Live video, long video calls, or cloud backup left on: two to three gigabytes a day, sometimes more
Which Japan plan fits a blossom trip
Our Japan plan works across the whole country, on all four national networks, all of them 5G, so the same eSIM follows you from Fukuoka to Sapporo without you changing anything. The choice is only about size, and in Japan the sizes are priced so that the step up is usually worth it.
The ten-gigabyte plan holds twice the data of the five-gigabyte plan for about half as much again. The twenty-gigabyte plan costs less than two ten-gigabyte plans would. All three last 30 days, so a trip of a week or two fits any of them, and the only question is how much you will film.
On an unlimited plan, each day starts with 3 GB at full speed; after that you stay online at a slower speed until the allowance resets. In Japan they cost more than the fixed plans that hold the same amount of full-speed data. Seven days of unlimited costs about 1.6 times the twenty-gigabyte plan, and gives you roughly the same 21 GB of full-speed data across the week. The fifty-gigabyte plan is cheaper than fourteen days of unlimited, and it holds more full-speed data than two weeks of 3 GB days add up to. Unlimited is for the traveller who wants never to look at a balance, not for the one who wants the most data for the money.
If you run short, most of our Japan plans can be topped up from your dashboard. The extra data lands on the eSIM already in your phone. That is why it is fine to buy near the middle of your estimate rather than at the top of it.
- Up to a week of maps, messages and photos: 5 GB for 30 days
- A week of posting every day, or two weeks of lighter use: 10 GB for 30 days
- Two weeks of posting every day, or one phone sharing its data with a second phone: 20 GB for 30 days
- Video for hours most days: 50 GB for 30 days, or unlimited if you never want to check a balance
Following the blossom north: Tohoku, Hokkaido and Golden Week
If you miss the peak in Tokyo or Kyoto, the season is not over. It has moved north. Sendai averages full bloom on 13 April, Aomori on 26 April and Sapporo on 6 May, so a late April trip can still be a cherry blossom trip, just in a different part of the country.
That late stretch overlaps with Golden Week, Japan's run of public holidays at the turn of April and May. In 2027 they fall on Thursday 29 April and then Monday 3 to Wednesday 5 May. It is the busiest domestic travel period of the year, so trains and hotels in the north fill early. If you are chasing the northern blossom, book those nights first.
Your eSIM does not change as you go. The same Japan plan covers Tohoku, Hokkaido and Okinawa. What does change is coverage away from towns: on mountain roads and in the interior of Hokkaido the signal can thin out, so save offline maps of any rural area on your route while you still have hotel Wi-Fi.
When to buy your eSIM for spring 2027
Every plan we sell has two clocks. From the day you buy, the eSIM has 180 days to make its first connection. The plan's own days, the 30 days of a monthly plan for example, only start when it first connects to a network in Japan. Buying early does not use up any of your trip.
The 180-day window is the one to count for a spring trip, because spring trips are booked so far ahead. Count back 180 days from the day you land. Arriving on 25 March 2027 for the Tokyo and Kyoto peak, the earliest you can buy is 26 September 2026. Arriving on 29 April for Golden Week, it is 31 October 2026. Arriving in Sapporo on 1 May, it is 2 November 2026. Buy too early and the eSIM can expire before your flight. A simple rule: wait until the trip is less than five months away, then buy.
If the trip changes, you are covered: as long as the eSIM is still uninstalled, a change of mind is refundable. So buy when your dates are inside the window, put it on your phone at home in the last couple of days before departure, and leave the line switched off until you land. Then switch it on, turn on data roaming for that line, and it connects to a Japanese network.
- Landing 25 March 2027: buy from 26 September 2026
- Landing 29 April 2027: buy from 31 October 2026
- Landing 1 May 2027: buy from 2 November 2026
- Install it in the last couple of days before departure, not the day you buy
Two things that changed since last spring
If you shopped in Japan before, the tax-free rules are different now. From 1 November 2026, tax-free shops charge the full price including consumption tax, and you claim the tax back when you leave. You still need to spend at least 5,000 yen before tax in one shop on one day, and you complete the claim within 90 days of buying.
At the airport, before you check your bags, you take your passport and the goods to a tax-free terminal in the departure hall. A green result means you are done; a red result sends you to a customs officer for a check. Keep the goods with you rather than in your suitcase until that is done, and leave extra time at the airport in the first months while the new system beds in. Anything you used up in Japan, such as food or cosmetics, no longer qualifies.
The second change is smaller. Japan's departure tax, which is added to your plane or ferry ticket, rose from 1,000 yen to 3,000 yen in July 2026. You do not pay it separately, but it explains why the taxes on your ticket look higher than they did last year.
Your blossom-trip checklist
Most of this is done once, at home, weeks before the trip. The rest is a few taps when you land.
The order matters only at the end. Install before you fly, switch on after you land, and keep the forecast pages one tap away for the whole trip.
- Book flights around the average full-bloom date for the city you care about most, with that city in the middle of the trip
- Keep two or three nights flexible, with free cancellation
- Buy your Japan eSIM once your arrival is less than five months away
- Set photo and video backup to Wi-Fi only
- Download offline maps for every city, and for any rural area you will drive through
- Install the eSIM at home a day or two before you fly, then leave the line switched off
- On arrival, turn the Japan line on and allow data roaming on it
- Check the bloom reports each morning and move the flexible nights to wherever the trees are best
Frequently asked questions
When is cherry blossom season in Japan in 2027?
No forecast for 2027 exists yet, so the best guide is the Japan Meteorological Agency's thirty-year average. On those averages the season starts in Fukuoka and Tokyo in the last week of March, reaches Kyoto and Osaka in early April, moves through Sendai in mid-April and Aomori in late April, and ends in Sapporo in early May. Expect the real dates to land up to a week or two either side.
When do the cherry blossoms bloom in Tokyo?
On average, Tokyo reaches first bloom on 24 March and full bloom on 31 March. In 2026 both came early, on 19 March and 28 March. The official tree the Japan Meteorological Agency watches is at Yasukuni Shrine. For the best chance of seeing full bloom, plan to be in Tokyo for several days around the end of March rather than for one fixed day.
When is the best time to see cherry blossoms in Kyoto and Osaka?
Both cities average full bloom on 4 April, with first bloom on 26 March in Kyoto and 27 March in Osaka. They do not always move together: in 2026 Kyoto reached full bloom on 30 March and Osaka on 3 April. A trip that covers the first week of April, with a few flexible nights, gives you the best chance in both.
When do cherry blossoms bloom in Hokkaido?
Late, and with a big swing. Sapporo averages first bloom on 1 May and full bloom on 6 May, which overlaps with Golden Week. In 2026 the trees opened on 18 April and reached full bloom on 24 April, almost two weeks early. If Hokkaido is the reason for your trip, keep your dates flexible and book early, because Golden Week fills trains and hotels.
When will the 2027 cherry blossom forecast come out?
Japan's cherry blossom forecasts come from private weather companies rather than the government, and they usually publish their first forecasts around the turn of the year. They are then revised regularly until the trees open, and become much more reliable in the final weeks. Book your flights around the averages first, and use the forecasts to fine-tune the middle of the trip.
How long do the cherry blossoms last?
On the Japan Meteorological Agency's averages, a tree goes from first bloom to full bloom in four to nine days, depending on the city, and the blossom is at its best for only a few days around full bloom before the petals start to fall. Rain and wind shorten that. Each city is different, so the season across Japan lasts weeks, but a single park is at its peak for days.
How much data does a cherry blossom trip to Japan use?
About a gigabyte a day if you post photos and short clips every day, and about half that if you mostly use maps, translation and messaging. The biggest risk is cloud backup of video over mobile data, which can spend more than 300 MB on each minute of 4K footage. Set backup to Wi-Fi only. Then a ten-gigabyte plan covers a week of daily posting or two weeks of lighter use, and two weeks of daily posting needs twenty.
Which eSIM should I buy for Japan in cherry blossom season?
A Japan plan sized to how much you will post. Five gigabytes suits a week of maps, messages and photos. Ten suits a week of posting every day, or two weeks of lighter use. Twenty suits two weeks of daily posting, or a plan shared with a second phone. All three last 30 days. The same plan covers the whole country, so it follows the blossom from the south to Hokkaido without any changes.
My cherry blossom trip is in late April. When should I buy the eSIM?
No more than 180 days before you land, because every plan we sell has 180 days from the day you buy it to connect for the first time. For a 29 April arrival that means buying on or after 31 October 2026. The plan's own days only start when it first connects in Japan, so buying a few months early costs nothing, and an eSIM you have not installed can be refunded if the trip changes.
Is unlimited data worth it for filming the cherry blossoms?
Usually not in Japan, where the fixed plans are cheaper for the same amount of full-speed data. Unlimited gives you 3 GB a day at full speed, so seven days is about 21 GB, and it costs about 1.6 times the twenty-gigabyte plan. Choose unlimited if you would rather never check a balance. Choose a fixed plan, and top up if needed, if you want the most data for the money.
Is Golden Week a good time to see cherry blossoms in Japan?
In the north, yes. By Golden Week, which runs from 29 April to 5 May, the blossom in Tokyo and Kyoto is long gone, but Aomori averages full bloom on 26 April and Sapporo on 6 May. It is also Japan's busiest holiday week, so trains and hotels fill early. Book the northern part of the trip first, and keep a day or two flexible.
Can I still shop tax-free in Japan after November 2026?
Yes, but the refund now comes at the end of your trip. From 1 November 2026 you pay the full price including tax, then claim the tax back at a terminal in the departure hall before checking your bags, within 90 days of buying. The 5,000 yen minimum per shop per day still applies, and items you used up in Japan no longer qualify.