# Isu Bay, Japan: what it is and when to go > Isu Bay is a bay in Kagoshima Prefecture, Japan (伊須湾). Interests: Nature. The best time to visit is April to May and October. In June there are 13 h 47 of daylight, and in December, 10 h 13. It has an article in one Wikipedia, 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/isu-bay/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** Bay in Kagoshima Prefecture, Japan · Nature - **Local name:** 伊須湾 - **Where:** Japan - **Best time:** April to May and October. - **Nearest airport:** OKA Naha, 278 km as the crow flies - **Coordinates:** 28.16491, 129.35372 ## What it is and where Isu Bay is a bay in Kagoshima Prefecture, Japan (伊須湾). It has an article in one Wikipedia, so it is not one of the busiest places in Japan: one to enjoy at a calmer pace. Its coordinates are 28.16491, 129.35372; the nearest main airport is Naha International Airport (OKA, Naha), 278 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=28.164912%2C129.353725) - [Directions](https://www.google.com/maps/dir/?api=1&destination=28.164912%2C129.353725) It is one of the [Nature](https://kokai.app/en/paises/asia/japon/naturaleza/) 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 Isu Bay is **April to May and October**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 10 h 24 | | February | Possible | 11 h 02 | | March | Possible | 11 h 48 | | April | Best time | 12 h 41 | | May | Best time | 13 h 24 | | June | Possible | 13 h 47 | | July | Possible | 13 h 37 | | August | Possible | 13 h | | September | Possible | 12 h 09 | | October | Best time | 11 h 18 | | November | Possible | 10 h 34 | | December | Possible | 10 h 13 | In June there are 13 h 47 of daylight, and in December, 10 h 13. 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. 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 - [Kiyanma Yama](https://kokai.app/en/paises/asia/japon/mt-kiyanma/): Mountain in Japan · 2.5 km - [Yui Dake](https://kokai.app/en/paises/asia/japon/mt-yui/): Mountain in Japan · 4.5 km - [Higo Yama](https://kokai.app/en/paises/asia/japon/mt-higo/): Mountain in Japan · 6.0 km - [Toriga Mine](https://kokai.app/en/paises/asia/japon/mt-torigamine/): Mountain in Japan · 7.5 km - [Kanengo Dake](https://kokai.app/en/paises/asia/japon/mt-kanengo/): Mountain in Japan · 9.4 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 Isu Bay? It is a bay in Kagoshima Prefecture, Japan (伊須湾 in the local language). It has an article in one Wikipedia, 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 Isu Bay? April to May and October. In June there are 13 h 47 of daylight, and in December, 10 h 13. ### How do you get to Isu Bay? The nearest main airport is Naha International Airport (OKA), 278 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=28.164912%2C129.353725) 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 [Kiyanma Yama](https://kokai.app/en/paises/asia/japon/mt-kiyanma/), [Yui Dake](https://kokai.app/en/paises/asia/japon/mt-yui/), [Higo Yama](https://kokai.app/en/paises/asia/japon/mt-higo/). The rest is in [the Japan guide](https://kokai.app/en/paises/asia/japon/). Data from [OpenStreetMap](https://www.openstreetmap.org/node/8320026457), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q49380501), CC0. Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).