How to Read the Japanese Autumn Leaves Forecast

Autumn leaves season is here. Learn how Japan's koyo forecasts work, what the dates mean and how to time a trip to catch the best colors.

Published October 16, 2026 at 9:33 PM JST | By Tokyo Paul

Quick answer: Japan's autumn leaf forecasts estimate when red and yellow leaves will reach their best color, and they shift with temperature each year. Color moves from north to south and from highlands to cities, so treat each date as a window and stay flexible.

Each autumn, Japan turns its attention to the leaves, and forecasts of when the colors will peak are followed almost as closely as the cherry blossom forecasts in spring. As the season arrives, travelers are checking the maps and wondering how to read them. A forecast is a wonderful planning tool, but it works best when you understand what the dates actually mean and how colors move across the country. This guide explains the basics of koyo, the Japanese word for autumn leaf color, and how to use forecasts to choose the right days and places.

Koyo and the Joy of Leaf Viewing

The act of going out to enjoy autumn leaves is called momijigari, which is often translated as autumn leaf hunting, and it is a beloved seasonal pastime in Japan. Visitors stroll through temple gardens, mountain valleys and city parks, often pausing for a hot drink or a seasonal sweet. The scenery combines red maples, golden ginkgo trees and the warm tones of other deciduous trees, and the combination can make even a short walk feel special.

Leaves change color because of seasonal shifts inside the tree. As the green chlorophyll breaks down, yellow and orange pigments that were already present become visible, while reds are produced as the season turns. The brightest colors tend to appear when autumn days are sunny and cool and nights are chilly but not freezing, and warm autumns can delay the change. That link with temperature is the reason forecasts keep changing from year to year.

Who Makes the Forecasts

In Japan, leaf color forecasts are published by private weather companies such as the Japan Meteorological Corporation, which releases several updates during the season. Its predictions are based on its own calculations built on past research into when maple and ginkgo leaves change, and they follow observation standards used with sample trees. The forecasts cover hundreds of locations across the country, with tables and maps showing the expected dates for red and yellow leaves, along with comparisons to a typical year.

Different services present their forecasts in slightly different ways. Some show a date when the leaves first begin to change, while others focus on the best viewing period. The Japan Meteorological Corporation, for instance, describes its forecast date as the first day on which most of a tree's leaves have turned red or yellow, and it also gives best viewing dates. Because definitions vary, take a moment to read the explanation on each forecast page before you compare dates.

How to Read the Dates and Maps

A typical forecast lists cities with a predicted date for yellow leaves, usually ginkgo, and for red leaves, usually maple. Many also show whether the date is earlier or later than a normal year, which is a handy way to understand how the season is unfolding. A note that red leaves are expected several days late, for example, usually reflects lingering warm weather. Regional maps give a quick picture of the overall pattern at a glance.

Think of each date as the center of a window rather than a single perfect day. Leaves in one garden may peak earlier than the city average, and the best colors last only a limited time, depending on weather. Wind and heavy rain can shorten the display, while a stretch of clear, crisp days helps colors last. Treat forecasts as guidance and stay flexible, ideally with a few days of buffer around your preferred dates.

The Rhythm of Color Across Japan

The change starts in the north and spreads south, which is the opposite of the cherry blossom front that moves northward in spring. It also begins at higher elevations and moves down toward the lowlands, so mountain areas and highland towns usually peak before the cities below them. In Hokkaido, color can arrive early in autumn, while places such as Tokyo and Kyoto often reach their best in late November and early December. In typical years, yellow ginkgo arrives a little ahead of the reds in many cities.

This pattern creates useful options for travelers. If your dates are set early, consider mountain areas or northern regions where color is already at its best. If you are visiting in late November or early December, the big cities and many famous gardens are likely to be glowing. Because red leaves tend to follow yellow, a trip that falls between the two can offer a lovely mix of both.

Practical Tips for Leaf-Viewing Trips

Popular spots, especially in Kyoto, can be crowded at peak times, so go early in the morning or on a weekday, and consider visiting lesser-known temples and parks nearby. Book accommodation early for peak weeks, since lodging fills quickly in famous areas. Check the forecast again a few days before you travel, and keep a flexible plan in case the colors arrive earlier or later than expected.

Dress in layers, because autumn mornings and evenings can be chilly, and bring comfortable shoes for stone steps and gravel paths. Many gardens hold special evening illuminations during the season, which can be beautiful, though they may require tickets or reservations. Be gentle with the scenery by staying on paths, taking your trash with you and respecting photography rules at temples. A thoughtful visitor helps keep these places lovely for everyone.

Comparisons with a normal year are especially useful. In one recent forecast, lingering summer heat was expected to delay red leaves the most, by ten days or more in some northern and highland cities such as Sapporo and Nagano. That illustrates why the same city can peak at different times from year to year. If your travel dates are fixed, look at both the predicted date and the difference from the average, and use them to decide whether to visit a lower-lying garden or climb to a cooler highland spot.

Quick Takeaways

Autumn leaf forecasts in Japan estimate when red and yellow leaves will reach their best color, and the dates shift with temperature each year. Read how each service defines its dates, treat them as a window instead of a single day and remember that color moves from north to south and from the highlands to the cities. Plan with flexibility, book early for peak weeks and visit popular places on weekdays or early in the day. Dress warmly, respect the scenery and enjoy the slow pleasure of seasonal strolling. With a little understanding of the forecast, you can meet the leaves at their best.

Frequently Asked Questions

Who publishes the autumn leaves forecast in Japan?

Private weather companies publish them, including the Japan Meteorological Corporation, which releases several updates during the season. Its predictions use its own calculations based on past research into when maple and ginkgo leaves change color, and they cover hundreds of locations nationwide.

Which regions see autumn colors first?

The change starts in the north, such as Hokkaido, and spreads south. It also begins at higher elevations before moving down to lowland cities. This is the reverse of the cherry blossom front, which moves northward in spring.

Why do autumn leaf forecasts change?

Temperature drives the timing. Brightest colors develop when days are sunny and cool and nights are chilly, while warm autumns can delay the change. As weather evolves, forecasters update their predictions, so check again a few days before your trip.

Keep Exploring

More guides from Tokyo Paul: Daisetsuzan: Where Japan's Autumn Colors Begin, Oirase Gorge: Aomori's Mossy Autumn Stream and Nikko's Irohazaka Road and Autumn Colors.