Fall Leaf Forecast 2025. Learn how daylight, temperature, and precipitation influence the vibrant colors of autumn, and explore the advancements in ai that are revolutionizing our ability to forecast peak foliage. If you go too early, you’ll see more green than orange.

When will the leaves start changing? In every year, japan weather association (jwa) announces forecasts for the best time for autumn foliage and its viewing spots throughout japan from september to november.