Hiroshima Meteorology Museum teaches us weather in Japan

I went to “Hiroshima City Ebayama Museum of Meteorology” to know about the weather of Hiroshima.






ebayama museum weather box

There is a lot of equipment, you can experience a variety of weather.



In fact, this museum is bombed building.
It is located from ground zero to about 3.7km.

bombed building in Ebayama, Hiroshima

bombed building wall

This museum has a lot of materials on the atomic bomb. It was very valuable. However, we will introduce in a separate article about this.
I’ll write what I’ve learned about weather below.

Hiroshima Prefecture has many mountains. Chugoku Mountains of north has formed the Backbone Range.

To the south of Hiroshima Prefecture, there is a plain and Seto Inland Sea.
To the east, there is a Ashida and plain Fukuyama.
To the west, there is a Ota River. It flows into the Hiroshima Bay.
There is also the Hiroshima plains.

In the prefecture central part of Hiroshima Prefecture, there is Gōnokawa River. It is the longest Chugoku.
There is also Miyoshibonchi. It is famous for its fog.

These mountains, rivers, basin, plateau, and Seto Inland Sea has great influence on the climate of Hiroshima Prefecture.


Spring is a large difference in the heat and cold of the hottest of the year. It is a violent season of weather change. At the beginning of spring is also when the cold winds of winter remnants blows. But it gradually begins to rise temperatures.

From March to April, it may occurrence of fire to such time as will you wildfire that air is very dry. Minimum humidity of the year is also this season appear.

This season in the yellow sand will flew to Japan a lot. It dyed the sky yellow. It carries west wind is the fine sand of the Chinese mainland north of loess zone to Japan.

When it comes to April-May, Hiroshima is often covered with mobility anticyclone. Temperature is down, it may be frost on the ground. Around this time because it corresponds to the germination phase of the crop, it is the frost damage is likely to occur.

The time of the summer of transition from the spring, the weather is unstable. In the spring of Hiroshima, the weather will change often. It also will change periodically.


June is called the rainy season. Often it will rain.
Also record heavy rain in Hiroshima Prefecture, it has been going on at this time.
When you have finished the rainy season temperature will rise. And fine weather will continue.

Forces of the Pacific Ocean high pressure is followed by a strong and hot sunny day.
Is strong solar radiation in the inland. Thundercloud many will occur. And shower occurs. In the coastal part of this season, it is a pleasant breeze from the sea.

However, in the Seto Inland Sea coast, it is a temporary calm state through the night from the evening. Therefore it will be unbearable heat. It is a peculiar phenomenon called “Seto of Yunagi”.

In addition, this season will have increased the occurrence of typhoons. It sometimes landed to Hiroshima.


Forces of the Pacific Ocean high pressure is still strong.
Hot state continues even mid-September. This is called the heat of late summer.

Through October from mid-September, front it may cause a stagnation in Japan’s south coast. This it says “autumn rain”. The weather is unstable.

This season, and sometimes close to the large-scale typhoon West. It sometimes plush heavy rain. It brings a large damage. From October Te k Nikake November, the weather will come gradually stabilized. Clear skies covered with mobility high pressure will continue. But the temperature is lowered to gradually, looks like frost in the mountainous areas.

Also, autumn from the summer, you may be large-scale typhoon to the occurrence of damage by or landed or close.

Typhoon No. 19 of 1991 has had a significant damage in Hiroshima Prefecture.


In the winter, it is a day often snowy in the center of the mountainous areas of the Chugoku Mountains along and Kensei part. In mountainous areas, it is often snow is equal to or greater than 1 m. The heavy snowfall of January 1963 it was reached 3 meters 50 centimeters in Yawata.

Also, in the winter, in the along the Chugoku Mountains, Shigure prone weather will continue. The northwesterly wind blows strongly in succession about three days. Then 3 There is a weak day of to 4 days of wind. On the other hand, in the Seto Inland Sea side, it is less snow. Even though winter is often the sunny weather.

In addition, on the day of calm sunny covered with high pressure in winter, morning temperatures will fall suddenly. Downturn is severe.

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