David, what month is leaf-peeping best in Japan? We are planning for early November next year; I hope that is not too late.
Lola - Early November should be quite good. Depends on the weather and other variables, like anywhere else, but probably not too late. The typical pattern, as one could probably guess, is the color starts in the north (Hokkaido) and moves progressively further south with the passing days. Around Kyoto, which is a bit south, early November could be ideal - it's listed as one of their "Top 10" locations for color. On a previous trip we were there (Tofukuji, Kiyomizudera, Eikando and more - all right around Kyoto) and these were great.
Here's the source: japan-guide.com online Autumn Colors Reports. As luck would have it, the first report of the season is due to start today, in a few hours(!) on September 19 in Japan - the reports are updated constantly (one could even say obsessively, like so many things in Japan). The degree to which the color is tracked and the enthusiasm evident is impressive.
Here's what they say:
"Colorful leaves (koyo) are to the Japanese autumn what cherry blossoms are to spring. The viewing of autumn leaves has been a popular activity in Japan for centuries and today draws large numbers of travelers to famous koyo spots both in the mountains and in the cities."
"Each year, starting in mid September, the "koyo front" slowly moves southwards from the northern island of Hokkaido until it reaches the lower elevations of central and southern Japan towards the end of November. Some trees around Tokyo and Kyoto remain colorful into early December."
Track their reports this year for the time/locations you'll be there next year, and hope it remains consistent. Do be aware that leaf watching is a huge driver of domestic tourism, so there will be crowds and things book up earlier than you might expect for Fall season. But the crowds in those areas are all quite manageable and it's a delightful experience - it's all very, very Japanese and a completely authentic experience. You will be charmed. Don't miss the special hot, sweet sake served at leaf watching locations (think lightly-alcoholic, hot apple cider, not bitter/weird/strong moonshine).
Kyoto is a beautiful city with so much to see - and a great location for leaf-watching. Timing could be perfect for you.
Wish I was going!