UV Index in Eniwa, Japan

Last updated: July 2, 2025

In Eniwa, Japan, staying informed about the UV Index is essential for protecting your skin and overall health. With UV levels peaking between 11 AM and 1 PM, understanding these fluctuations can help you prevent sunburn and long-term skin damage. Eniwa's Dfb climate typically brings a combination of cool summers and mild winters, but during summer, the UV exposure can still pose significant risks—especially on sunny days. By monitoring the UV Index, you can enjoy the outdoors safely while minimizing the harmful effects of the sun.

Hourly UV Index in Eniwa

As the day unfolds, the UV Index reaches its peak around 11:00 AM and 12:00 PM, soaring to a notable 9—a clear signal for sun protection. The morning starts gently, with values of 3 at 7:00 AM rising steadily to 6 by 9:00 AM. By 10:00 AM, the intensity escalates to 8, urging outdoor enthusiasts to take precautions. The afternoon sees a slight decline, dropping to 5 at 3:00 PM, and further to 3 by 4:00 PM, before settling at a low of 1 after 5:00 PM. Keeping an eye on these fluctuations is crucial for safe sun exposure throughout the day!

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
08:004moderate30 min
09:006high25 min
10:008very high15 min
11:009very high15 min
12:009very high15 min
13:008very high15 min
14:007high25 min
15:005moderate30 min
16:003moderate30 min
17:001low45 min
18:001low45 min
19:001low45 min

Monthly UV Index Trends in Eniwa

The UV Index shows a clear seasonal variation, with high-risk months from March to September, where values peak at 10 in August. January and December experience low exposure with a UV Index of 2, while February and November have moderate exposure with an index of 3. During April and May, the UV Index rises significantly, reaching very high levels of 8 and 9, meaning a burn time of just 15 minutes is recommended during peak intensity months. Visitors and residents should take precautions from March through September, especially midday, to protect their skin, including wearing sunscreen, protective clothing, and seeking shade. As UV levels drop in the fall and winter, there is less risk, but some protection is still advisable in February and October.

Monthly Maximum UV Index for Eniwa, Japan

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Eniwa. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec2367899108532
Data source: Statistical UV Index data for Eniwa, 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 Eniwa UV Index with Other Japan Cities

The table above highlights how UV exposure in Eniwa 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.
Eniwa's solar exposure compared to other cities in Japan. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Sapporo UVI2367999108532
Eniwa2367899108532
Yokohama UVI35891111111110754
Tokyo UVI35891111111110754
Nagoya UVI468101111111110753
Osaka UVI468111111121110753