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UV Index in Nagasaki

Day Summary

Today's UV index in Nagasaki, Japan Japan will be up to 10, indicating a very high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.

Last checked: 2025-06-01

Forecast

Today's tips

With a UV index of 10 in Nagasaki, it's crucial to safeguard your skin from harmful UV rays. Protect yourself by minimizing sun exposure, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours.

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

UV index

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 Trend

See the UV index hour by hour for Nagasaki, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.

Disclaimer

* This page's content about the UV index in Nagasaki (Japan) is for educational and informational purposes only. The developers and data providers are not liable for the accuracy, reliability, or availability of the information. The information is not a substitute for professional medical advice, and the developers and data providers are not medical professionals. Seek advice from a qualified health provider for any medical concerns, and do not disregard medical advice or delay seeking it based on the information provided on this site.