(Water Sprinkling)

The Art of Uchimizu

  1. 其の一Fill

  2. 其の二 Spill

  3. 其の三 Chill

The cooling effect of Uchimizu lasts longer when done in the gentle morning or evening light, or in the shade as opposed to direct sunlight. The water will evaporate quickly when sprinkled during the intense daytime sun, nulling the cooling effect.
Be water conscious! Use rainwater or recycled water (e.g. shower water).


Be careful of heat stroke and avoid the spread of Covid-19

  • Wash your hands thoroughly with soap and water after performing Uchimizu.
  • Don't overdo it if you're feeling unwell.
  • Keep a distance of at least 2 meters from people around you.
  • Wear a mask if you cannot keep a sufficient distance (more than 2m)
    (Remove your mask to prevent heat stroke provided you can keep a safe distance)
  • Sprinkle water multiple times over the course of a day instead of all at once in order to spread out the number of people.
  • Always disinfect tools (ladles, buckets, etc.) before use.

The History of Uchimizu

東京名所尽 愛宕山遠望図Source: "Tōto meisho-zukushi Atagoyama enbou-zu" (1840-43) in Minato City Local History Museum

The Japanese tea ceremony, called "chanoyu", was established during the Sengoku period and the Azuchi-Momoyama period. Uchimizu is performed as a courtesy during tea ceremonies.

During the Edo period, Uchimizu was written about in haiku poems and depicted in Ukiyo-e woodblock prints, suggesting that it was a common way to cool off.

In addition to easing summer heat, it's thought that Uchimizu was performed to keep dust off the streets, welcome guests by sprinkling water at the entrance or on the road, and purify the atmosphere.

Source: "Uchimizu" chronology (excerpt) (2009, Shigenori Asai, Japan Water Forum, a nonprofit organization)

Scenes with Uchimizu in Japan

There are many ways to incorporate Uchimizu at home during the summer months. Additionally, there are Uchimizu events held all-over Tokyo.


Additional Information

The following information is provided by the Ministry of the Environment Government of Japan and the Japan Meteorological Agency when they predict the high risk of heat stroke.

Ministry of the Environment  Government of Japan Heat Stroke Alert (external link)