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Osaka UV Index Today

Day Summary

The UV index in Osaka, Japan Flag of Japan will reach a high of 10.8 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.

Osaka's UV Index

Osaka's UV index is highest in summer, often reaching very high to extreme levels around July and August, and lowest in winter, typically low to moderate from December to February. Seasonal patterns include hot, humid summers with heavy rain due to the monsoon, and cool, mild winters with less precipitation. Compared to other parts of Japan, Osaka is warmer and wetter than northern regions like Hokkaido but cooler and less rainy than southern areas like Okinawa; it experiences more rainfall than most inland areas but less than some coastal zones.

Hourly UV Index Trend

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

Disclaimer

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