Ifm glad you found it helpful. If you want to find more information, you can try doing an online search on the two terms FìÃ¹ and ~ (gKumano Kodoh and gwinterh) to get pages in Japanese that you can then try translating. I have only very limited experience with translation software myself so I canft really advise you there, but the software does seem to be getting better over time.
There might be more information available online in English on this specific topic (i.e., winter hiking) but I havenft found it yet. There is a lot of good English information available on the Kumano Kodo in general, especially on the Nakahechi. (The Tanabe City page is particularly good, although it doesnft have extensive information on the Iseji. But it does have some, including maps.) Presumably youfve already found this resource, but herefs the URL: https://www.tb-kumano.jp/en/
Japan Guide also has some pages on Kumano Kodo, which I assume you have found.
I hope you have some great hiking, wherever you end up going. Your chances for good weather in January or early February are pretty high. The times Ifve been on the Kii Peninsula so far were by necessity all in June, and it always seemed to rain at least one of the few days I was there. My strategy this time is to hang out in Kyoto for a week and follow the weather forecasts carefully to pick the optimal day for a day trip hike. But you have to time things very carefully to do that, and canft do a very long hike. Getting stuck on the trail after dark would be pretty bad. The option of staying somewhere near a trail gives you more time to hike, but once you book lodging reservations you are kind of locked in to specific dates and are at the mercy of the weather gods. I would not attempt to hike anywhere on the Iseji on a rainy day, especially in the winter. The trails are rocky, slippery, and in some places quite steep, and I think rain would distract you from enjoying the incredible natural beauty. If you are quite intrepid, maybe you could do some hiking on the Nakahechi in the rain. I think Daimonzaka would probably work (there is an extensive network of stone steps on that slope, making it a lot less treacherous when wet). I donft know anything about the rest of the Nakahechi.
If you decide you donft want to make the trip to the Kii Peninsula to hike Kumano Kodo, there are some very pleasant day hikes on a fairly recently developed trail network in the Kyoto area, known as simply gThe Kyoto Trail.h I have only hiked a little of it myself but it seems to have a lot to offer. There is a fair amount of English information available on the web, and gobs of Japanese information. (Donft expect too much help from tourist information centers or hotel concierges, though. The ones I asked were definitely not well-informed about this trail network. Its establishment as an organized network is quite new, although some of the individual segments are definitely not.)
Some years ago I used to love to walk on a fabulous gsecreth back trail at Fushimi Inari Shrine, and it was quite magical (not Kumano Kodo, but still very beautiful, and with a very nice section of mainly bamboo). But like the main venue and primary trails there, it has finally been all but ruined by overtourism. New fences put up, signposts installed, bamboo marred with graffitic The last time I tried it, there was an effing entire tour group on the trail, complete with a leader spouting a constant monologue of information. Fortunately, there are plenty of other wonderful places to go to in Kyoto that havenft been gdiscoveredh yet. The great thing about the famous tourist magnet sites there (and everywhere else in Japan) is that they attract the overwhelming majority of foreign tourists, leaving the rest of the country all but untouched by tourism.