# Tengu Iwa, Japan: what it is and when to go > Tengu Iwa is a mountain in Minamiuonuma, Niigata prefecture, Japan (天狗岩), at 1,579 m above sea level. Interests: Nature and Mountains. The best time to visit is April to May and October. In June there are 14 h 31 of daylight, and in December, 9 h 28. It has articles in 2 Wikipedias, so it is not one of the busiest places in Japan: one to enjoy at a calmer pace. 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/mt-tenguiwa/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** Mountain in Minamiuonuma, Niigata prefecture, Japan · Nature, Mountains - **Local name:** 天狗岩 - **Where:** Japan - **Elevation:** 1,579 m - **Best time:** April to May and October. - **Nearest airport:** HND Tokyo, 176 km as the crow flies - **Coordinates:** 36.97492, 138.94745 ## What it is and where Tengu Iwa is a mountain in Minamiuonuma, Niigata prefecture, Japan (天狗岩), at 1,579 m above sea level. It has articles in 2 Wikipedias, so it is not one of the busiest places in Japan: one to enjoy at a calmer pace. Its coordinates are 36.97492, 138.94745; the nearest main airport is Tokyo Haneda International Airport (HND, Tokyo), 176 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=36.974924%2C138.94745) - [Directions](https://www.google.com/maps/dir/?api=1&destination=36.974924%2C138.94745) It is one of the [Nature](https://kokai.app/en/paises/asia/japon/naturaleza/) and [Mountains](https://kokai.app/en/paises/asia/japon/montana/) 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 Tengu Iwa is **April to May and October**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 9 h 44 | | February | Possible | 10 h 38 | | March | Possible | 11 h 43 | | April | Best time | 12 h 57 | | May | Best time | 13 h 59 | | June | Possible | 14 h 31 | | July | Possible | 14 h 18 | | August | Possible | 13 h 25 | | September | Possible | 12 h 13 | | October | Best time | 11 h 02 | | November | Possible | 9 h 59 | | December | Possible | 9 h 28 | In June there are 14 h 31 of daylight, and in December, 9 h 28. 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 | | Mountains | April to May and October | November to March and June to September | It is not the same trip whatever you come for: Tengu Iwa 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 - [Mount Warimeki](https://kokai.app/en/paises/asia/japon/mt-waribikidake/): Summit · 1.1 km - [Mount Makihata](https://kokai.app/en/paises/asia/japon/mt-makihata/): Mountain in Japan · 1.6 km - [Mount Ushi](https://kokai.app/en/paises/asia/japon/mt-ushigatake/): Summit · 2.2 km - [Mount Daigenta](https://kokai.app/en/paises/asia/japon/mt-daigenta/): Mountain in Japan · 8.2 km - [Mount Ozawa](https://kokai.app/en/paises/asia/japon/mt-ozawa/): Mountain in Gunma and Niigata Prefectures, Japan · 9.0 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 Tengu Iwa? It is a mountain in Minamiuonuma, Niigata prefecture, Japan (天狗岩 in the local language). It has articles in 2 Wikipedias, so it is not one of the busiest places in Japan: one to enjoy at a calmer pace. ### When is the best time to visit Tengu Iwa? April to May and October. In June there are 14 h 31 of daylight, and in December, 9 h 28. ### How do you get to Tengu Iwa? The nearest main airport is Tokyo Haneda International Airport (HND), 176 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=36.974924%2C138.94745) 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 [Mount Warimeki](https://kokai.app/en/paises/asia/japon/mt-waribikidake/), [Mount Makihata](https://kokai.app/en/paises/asia/japon/mt-makihata/), [Mount Ushi](https://kokai.app/en/paises/asia/japon/mt-ushigatake/). The rest is in [the Japan guide](https://kokai.app/en/paises/asia/japon/). Data from [OpenStreetMap](https://www.openstreetmap.org/node/5630165459), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q65259241), CC0. More about Tengu Iwa on [Wikipedia](https://ja.wikipedia.org/wiki/%E5%A4%A9%E7%8B%97%E5%B2%A9). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).