# Ōkunoshima Poison Gas Museum, Japan: what it is and when to go

> Ōkunoshima Poison Gas Museum is a museum in Ōkunoshima about Imperial Japanese poison gas manufacturing (毒ガス資料館). Interests: Museums and art. The best time to visit is February to May and October to November. In June there are 14 h 17 of daylight, and in December, 9 h 43. It has articles in 4 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/poison-gas-museum/
- Reviewed on: 2026-10-02
- Language: en

## In a nutshell

- **What it is:** Museum in Ōkunoshima about Imperial Japanese poison gas manufacturing · Museums and art
- **Local name:** 毒ガス資料館
- **Where:** Japan
- **Best time:** February to May and October to November.
- **Nearest airport:** KIX Osaka, 207 km as the crow flies
- **Opening hours:** Mo-Su 09:00-16:00; Dec 29-Jan 03 off
- **Price:** 100 JPY
- **Website:** [city.takehara.lg.jp](https://www.city.takehara.lg.jp/soshikikarasagasu/shiminka/gyomuannai/7/1957.html)
- **Run by:** 竹原市
- **Accessibility:** Wheelchair accessible
- **Coordinates:** 34.30589, 132.99418

## What it is and where

Ōkunoshima Poison Gas Museum is a museum in Ōkunoshima about Imperial Japanese poison gas manufacturing (毒ガス資料館). It has articles in 4 Wikipedias, so it is not one of the busiest places in Japan: one to enjoy at a calmer pace.

Its coordinates are 34.30589, 132.99418; the nearest main airport is Kansai International Airport (KIX, Osaka), 207 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=34.30589%2C132.994183)
- [Directions](https://www.google.com/maps/dir/?api=1&destination=34.30589%2C132.994183)

- **Run by:** 竹原市
- **Accessibility:** Wheelchair accessible

It is one of the [Museums and art](https://kokai.app/en/paises/asia/japon/museos/) 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 Ōkunoshima Poison Gas Museum is **February to May and October to November**.

| Mes | Época | Hours of daylight |
| --- | --- | --- |
| January | Possible | 9 h 57 |
| February | Best time | 10 h 46 |
| March | Best time | 11 h 45 |
| April | Best time | 12 h 52 |
| May | Best time | 13 h 47 |
| June | Possible | 14 h 17 |
| July | Possible | 14 h 05 |
| August | Possible | 13 h 17 |
| September | Possible | 12 h 12 |
| October | Best time | 11 h 07 |
| November | Best time | 10 h 10 |
| December | Possible | 9 h 43 |

In June there are 14 h 17 of daylight, and in December, 9 h 43. 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

- [Ōkunoshima Lighthouse](https://kokai.app/en/paises/asia/japon/okunoshima-lighthouse/): Lighthouse in Japan · 361 m
- [Mt. Shirataki](https://kokai.app/en/paises/asia/japon/mt-shirataki/): Mountain in Japan · 5.4 km
- [Ōyamazumi Shrine](https://kokai.app/en/paises/asia/japon/oyama-gion-shrine/): Shinto shrine in Ōmishima Island, Imabari, Ehime prefecture, Japan · 6.5 km
- [Mare Gracia Omishima](https://kokai.app/en/paises/asia/japon/mare-gracia-omishima/): Hot spring bath · 7.2 km
- [Tatara Hot Spring](https://kokai.app/en/paises/asia/japon/tatara-hot-spring/): Onsen · 7.4 km

Distances are as the crow flies. Everything else is in [the Japan guide](https://kokai.app/en/paises/asia/japon/).

## More in Japan: Museums and art

- [Tokyo National Museum](https://kokai.app/en/paises/asia/japon/museo-nacional-de-tokio/): art museum in Tokyo, Japan
- [Matsumoto Castle](https://kokai.app/en/paises/asia/japon/castillo-de-matsumoto/): building in Matsumoto, Nagano Prefecture, Japan
- [National Museum of Western Art](https://kokai.app/en/paises/asia/japon/museo-nacional-de-arte-occidental/): art museum in Tokyo, Japan
- [Hiroshima Castle](https://kokai.app/en/paises/asia/japon/castillo-de-hiroshima/): Castle
- [Kōfuku-ji](https://kokai.app/en/paises/asia/japon/kofuku-ji/): Buddhist temple in Nara Prefecture, Japan
- [Ushiku Daibutsu](https://kokai.app/en/paises/asia/japon/ushiku-daibutsu/): statue located in Ushiku, Ibaraki Prefecture, Japan

Every Japan place under Museums and art, each with its season, is on [its page](https://kokai.app/en/paises/asia/japon/museos/).

## Frequently asked questions

### What is Ōkunoshima Poison Gas Museum?

It is a museum in Ōkunoshima about Imperial Japanese poison gas manufacturing (毒ガス資料館 in the local language). It has articles in 4 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 Ōkunoshima Poison Gas Museum?

February to May and October to November. In June there are 14 h 17 of daylight, and in December, 9 h 43.

### How do you get to Ōkunoshima Poison Gas Museum?

The nearest main airport is Kansai International Airport (KIX), 207 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=34.30589%2C132.994183) 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 [Ōkunoshima Lighthouse](https://kokai.app/en/paises/asia/japon/okunoshima-lighthouse/), [Mt. Shirataki](https://kokai.app/en/paises/asia/japon/mt-shirataki/), [Ōyamazumi Shrine](https://kokai.app/en/paises/asia/japon/oyama-gion-shrine/). The rest is in [the Japan guide](https://kokai.app/en/paises/asia/japon/).

Data from [OpenStreetMap](https://www.openstreetmap.org/way/508699824), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q82275912), CC0. More about Ōkunoshima Poison Gas Museum on [Wikipedia](https://ja.wikipedia.org/wiki/%E5%A4%A7%E4%B9%85%E9%87%8E%E5%B3%B6%E6%AF%92%E3%82%AC%E3%82%B9%E8%B3%87%E6%96%99%E9%A4%A8). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).