Nagasaki UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index10.3
- Avg Clouds62%
- Max Temp28.4 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Nagasaki, Japan 
will reach a high of 10.3 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-22
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.
Nagasaki's UV Index
The UV index in Nagasaki varies throughout the year, reaching high levels in summer months, especially June through August, and lower levels in winter, from November to February. UV exposure is strongest during midday hours.
Weather Seasons
Nagasaki experiences warm, humid summers with frequent rain, especially during the rainy season in June and July. Winters are mild and relatively dry, with occasional cold spells but rarely snow. Spring and autumn have comfortable temperatures and less rain.
Nagasaki's Climate
Compared to other parts of Japan, Nagasaki is milder in winter and warmer in summer due to its coastal location. It has more rainfall than northern Japan but less than tropical Okinawa. Neighboring South Korea generally has colder winters.
Hourly UV Index Trend
See the UV index hour by hour for Nagasaki. When the level is high, it's smart to find some shade.
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