Uki, Tsuyu, and Akisame: Rainy Season in Japan

Spanning from May to July, “Tsuyu (梅雨)”, also called “Baiu (梅雨)”, is a cloudy and rainy season that can broadly be seen in East Asia including the southern part of China, South Korea, Taiwan, and Japan.

Tsuyu (梅雨) and Uki (雨季)

Rainy Season in Japan

In Japan, almost all areas except for the northernmost island of Hokkaido experience that cloudy, rainy period.

Entering the rainy season is called “Tsuyuiri (梅雨入り) or “Nyubai (入梅)”, which, based on the official website of Japan Meteorological Agency, begins with the country’s southernmost prefecture Okinawa annually early in May.

On the other hand, finishing the season is “Tsuyuake (梅雨明け)”, also known as “Shutsubai (出梅)”, which ends with the northern Tohoku region annually around the end of July.

Ume Plums

One theory holds that the reason why “Tsuyu (梅雨)” includes the word “Ume (梅)” in its name is that the plum fruit ripens during the rainy period, and as you can see from the other word included, “Ame (雨)” meaning “rain”, Tsuyu is an “Uki (雨季)”.

Uki (雨季)

As “Uki (雨季)” literally means “rainy season” in Japanese, it represents long periods of rainfall, spanning usually over one month,

and the representative examples in Japan are Tsuyu and the Autumn Rain “Akisame (秋雨)” seen from late August through around October.

(Reference Pages: Wikipedia 雨季, 梅雨, 秋雨 )


Hi, I'm Tomo, a Japanese blogger living in Niigata Prefecture, Japan. For the purpose of enriching your life, I would like to introduce things about Japan on this blog, especially unique Japanese products, cooking recipes, cultures, and facts and trivia.

Leave a Reply

Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: