Japanese Umbrella Labels Explained: 晴雨兼用, UVカット, 遮光 & UPF50+
Japan / Everyday Japan / Daily Goods
Japanese Umbrella Labels Explained: 晴雨兼用, UVカット, 遮光 & UPF50+
Japanese parasols are honestly one of my favorite summer accessories — pretty, practical, and full of technical labels that are easy to misunderstand.
A Japanese parasol can be rain-ready, UV-rated and light-blocking — but those are separate claims.
JUPA distinguishes water/rain use, UV shielding, light-blocking and heat-blocking performance, and sets conditions for claims such as 100%.
Four labels to separate
晴雨兼用 means an umbrella intended primarily for sun protection that can also be used in rain when water-repellent / waterproof treatment is provided. UVカット, 遮光 and 遮熱 describe different tested functions.
A sun umbrella with rain-use capability.
JUPA has performance-mark criteria for light-blocking fabric.
UV shielding is a separate test from visible-light blocking.
Do not read UVカット, 遮光 and 遮熱 as synonyms. They describe different performance measurements.
What does 晴雨兼用 mean?
It indicates a parasol designed mainly for sunny conditions that also has rain-use capability. Wpc., for example, describes its晴雨兼用 models as parasols with water-repellent and waterproof processing for rain use.
What does 遮光 mean?
JUPA's mark rules allow a shading mark for umbrellas using special light-blocking fabric with a shading rate of at least 99%. JUPA also defines a higher “class 1” condition at 99.99% or above.
What about “100%”?
JUPA's current standard says a 100% functional claim can be used only when confirmed by the specified JIS-based test, and the claim must clarify that the measurement is based on a fabric sample rather than guaranteeing the entire finished umbrella.
This is exactly why I read the tiny note under “UV 100%.” The fabric test result and the whole umbrella are not automatically the same thing.
Official sources
JUPA — umbrella standards
Official standard details
JUPA — performance marks
Official mark guide
Wpc. —晴雨兼用 example
Current product example
Bottom line
For a Japanese umbrella, read rain capability, UV protection, light blocking and heat blocking separately. One impressive number does not describe every function.
