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Hiroshima UV Index Today

Day Summary

The UV index in Hiroshima, Japan Flag of Japan will reach a high of 10.1 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!

Last checked: 2025-08-01

Hourly Forecast Chart

Today's Safety Tips

The risk is very high. It's best to stay out of the sun between 10 a.m. and 4 p.m. If you must be outside, wear protective clothing and apply sunscreen often.

Hiroshima's UV Index

The UV index in Hiroshima varies through the year, typically reaching high levels during summer months, especially in July and August. It can sometimes be moderate to low during winter and early spring seasons.

Weather Seasons

UV index

Hiroshima experiences four distinct seasons with hot, humid summers and mild winters. Spring brings cherry blossoms and moderate temperatures, while autumn has pleasant, cooler weather and colorful leaves. The rainy season happens in early summer.

Hiroshima's Climate

Compared to other parts of Japan, Hiroshima's climate is milder and less snowy than northern areas like Hokkaido. It is warmer and wetter than many inland regions. Nearby countries like South Korea have similar seasonal patterns but can be colder in winter.

Hourly UV Index Trend

See the UV index hour by hour for Hiroshima. When the level is high, it's smart to find some shade.

Disclaimer

* The information on this page about the UV index in Hiroshima is for educational purposes only. It is not a substitute for professional medical advice. Always consult a doctor for any health concerns.