# Sunden Forset, Japan: what it is and when to go > Sunden Forset is a protected area (サンデンフォレスト) in Japan (Maebashi). Interests: Nature and Wildlife. The best time to visit is April to May and October. In June there are 14 h 29 of daylight, and in December, 9 h 31. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip. - Address: https://kokai.app/en/paises/asia/japon/sunden-forset/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** Protected area · Nature, Wildlife - **Local name:** サンデンフォレスト - **Where:** Japan - **Best time:** April to May and October. - **Nearest airport:** HND Tokyo, 115 km as the crow flies - **Coordinates:** 36.46514, 139.20461 ## What it is and where Sunden Forset is a protected area (サンデンフォレスト) in Japan (Maebashi). It is in [Maebashi](https://kokai.app/en/paises/asia/japon/maebashi/), where this site lists 55 more places to see, 14 km from the centre. Its coordinates are 36.46514, 139.20461; the nearest main airport is Tokyo Haneda International Airport (HND, Tokyo), 115 km as the crow flies. How to get around Japan (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/asia/japon/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=36.465138%2C139.204608) - [Directions](https://www.google.com/maps/dir/?api=1&destination=36.465138%2C139.204608) It is one of the [Nature](https://kokai.app/en/paises/asia/japon/naturaleza/) and [Wildlife](https://kokai.app/en/paises/asia/japon/fauna/) places in Japan. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap. ## When to go The best time to visit Sunden Forset is **April to May and October**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 9 h 46 | | February | Possible | 10 h 40 | | March | Possible | 11 h 43 | | April | Best time | 12 h 56 | | May | Best time | 13 h 56 | | June | Possible | 14 h 29 | | July | Possible | 14 h 15 | | August | Possible | 13 h 24 | | September | Possible | 12 h 13 | | October | Best time | 11 h 03 | | November | Possible | 10 h 01 | | December | Possible | 9 h 31 | In June there are 14 h 29 of daylight, and in December, 9 h 31. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather. | What you come for | Best time | Possible | | --- | --- | --- | | Nature | April to May and October | November to March and June to September | | Wildlife | April to May and October | November to March and June to September | It is not the same trip whatever you come for: Sunden Forset has a different season depending on what you want to do here, and [Kokai](https://kokai.app/en/) puts it in the right month for you. When to go to Japan in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/asia/japon/#cuando-ir). ## Before you go to Japan To enter Japan there are 10 things to sort out before you leave, starting with “A valid passport covering your whole stay”: they are all, with their deadlines, in [the Japan checklist](https://kokai.app/en/paises/asia/japon/#antes-de-salir). Currency: Japanese yen (JPY); plugs: Type A and B · 100 V · 50/60 Hz (you need an adapter); emergencies: 110 police · 119 ambulance and fire. In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it. ## What is nearby - [KFT - G24 - Akagi nannmenn youkou no michi](https://kokai.app/en/paises/asia/japon/kft-g24-akagi-nannmenn-youkou-no-michi/): Hiking · 1.4 km - [KFT - G25 - Nashiki he no michi](https://kokai.app/en/paises/asia/japon/kft-g25-nashiki-he-no-michi/): Hiking · 2.2 km - [KFT - G23 - Yamazato no ideyu no michi](https://kokai.app/en/paises/asia/japon/kft-g23-yamazato-no-ideyu-no-michi/): Hiking · 4.4 km - [KFT - G26 - Zouki no yamaji](https://kokai.app/en/paises/asia/japon/kft-g26-zouki-no-yamaji/): Hiking · 5.2 km - [Gunma Insect World](https://kokai.app/en/paises/asia/japon/gunma-insect-world/): Zoo in Gunma, Japan · 5.4 km Distances are as the crow flies. Everything else is in [the Japan guide](https://kokai.app/en/paises/asia/japon/). ## More in Japan: Nature - [Mount Fuji](https://kokai.app/en/paises/asia/japon/monte-fuji/): volcano in Yamanashi and Shizuoka Prefectures, Japan - [Itsukushima Shrine](https://kokai.app/en/paises/asia/japon/santuario-itsukushima/): Shinto shrine in Hiroshima Prefecture, Japan - [Tokyo Bay](https://kokai.app/en/paises/asia/japon/bahia-de-tokio/): bay in Japan - [Mount Asama](https://kokai.app/en/paises/asia/japon/asama/): volcano on the border of Gunma and Nagano prefectures in Japan - [Sakurajima](https://kokai.app/en/paises/asia/japon/sakurajima/): volcano and island located in Kagoshima prefecture, Japan - [Mount Aso](https://kokai.app/en/paises/asia/japon/monte-aso/): volcano in Kumamoto Prefecture, Japan Every Japan place under Nature, each with its season, is on [its page](https://kokai.app/en/paises/asia/japon/naturaleza/). ## Frequently asked questions ### What is Sunden Forset? It is a protected area (サンデンフォレスト in the local language) in Japan. ### When is the best time to visit Sunden Forset? April to May and October. In June there are 14 h 29 of daylight, and in December, 9 h 31. ### How do you get to Sunden Forset? The nearest main airport is Tokyo Haneda International Airport (HND), 115 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=36.465138%2C139.204608) opens the route on the map, and how to get around Japan is explained in [its country guide](https://kokai.app/en/paises/asia/japon/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the Japan map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby. ### What else is around here? Nearby you have [KFT - G24 - Akagi nannmenn youkou no michi](https://kokai.app/en/paises/asia/japon/kft-g24-akagi-nannmenn-youkou-no-michi/), [KFT - G25 - Nashiki he no michi](https://kokai.app/en/paises/asia/japon/kft-g25-nashiki-he-no-michi/), [KFT - G23 - Yamazato no ideyu no michi](https://kokai.app/en/paises/asia/japon/kft-g23-yamazato-no-ideyu-no-michi/). The rest is in [the Japan guide](https://kokai.app/en/paises/asia/japon/). Data from [OpenStreetMap](https://www.openstreetmap.org/relation/4113256), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/), CC0. Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).