UV Index in Omu, Japan

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Omu, Japan, where the climate can lead to varying levels of UV exposure throughout the year. With maximum UV levels peaking at 8 during midday, awareness of these indices is essential for preventing sunburn and promoting skin health. As Omu experiences a Dfb climate, characterized by warm summers and cold winters, the risks associated with UV radiation can fluctuate significantly. Protecting your skin, particularly during high-index hours from 10:00 to 12:00, is vital for enjoying the outdoors safely and fostering long-term skin wellness. Stay informed and stay safe under the sun!

Hourly UV Index in Omu

The UV Index throughout the day showcases a dynamic increase in sun exposure, reaching its peak at 10:00 AM with a level of 8, signaling a higher risk of harm from unprotected sun exposure. As the day progresses, the index starts to decline gradually; it's still notable at 11:00 AM and 12:00 PM, where it holds steady at 8. By 1:00 PM, the index drops slightly to 7, and continues to ease down to 5 by 2:00 PM, and 4 by 3:00 PM. As the sun begins to set, the UV Index decreases even further, settling at 1 by 5:00 PM and dropping to 0 by 7:00 PM, indicating a safe end to sun exposure for the day. Plan your activities accordingly to maximize safety and enjoyment in the sunlight!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
TimeUVICategoryTime to Burn
07:003moderate30 min
08:005moderate30 min
09:006high25 min
10:008very high15 min
11:008very high15 min
12:008very high15 min
13:007high25 min
14:005moderate30 min
15:004moderate30 min
16:002low45 min
17:001low45 min
18:001low45 min
19:000low45 min

Monthly UV Index Trends in Omu

As the seasons change, so does the UV Index, significantly affecting outdoor activities and skin health. From the low exposure of January with a UV Index of 2 to the very high levels reaching 9 in the summer months of June, July, and August, it’s crucial for residents and visitors to be mindful of UV radiation. The high-risk months are May through August, where the UV Index consistently remains very high, resulting in a rapid burn time of just 15 minutes. During this period, it is advised to take extra precautions such as wearing protective clothing, applying sunscreen regularly, and seeking shade to minimize exposure. As summer transitions to fall, the UV levels decrease, but September still carries a high risk with an index of 7. By November and December, the risk drops back to moderate and low, respectively, allowing more leisurely outdoor activities. Stay informed and protect your skin to enjoy the great outdoors safely!

Monthly Maximum UV Index for Omu, Japan

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Omu. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec236789997532
Data source: Statistical UV Index data for Omu, based on information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Compare Omu UV Index with Other Japan Cities

The table above highlights how UV exposure in Omu compares to other major locations across Japan. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Omu's solar exposure compared to other cities in Japan. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Omu236789997532
Sapporo UVI2367999108532
Yokohama UVI35891111111110754
Tokyo UVI35891111111110754
Nagoya UVI468101111111110753
Osaka UVI468111111121110753