UV Index in Minamiuonuma, Japan

Last updated: June 2, 2025

Understanding the UV Index in Minamiuonuma, Japan is crucial for maintaining your skin health and preventing sunburn, especially as the region experiences a Cfa climate that can lead to elevated UV exposure. With peak UV levels reaching as high as 11 around midday, it's essential to be aware of these readings to protect yourself from potential skin damage. Being informed about UV levels not only helps you enjoy the outdoors safely but also empowers you to take proactive measures against the harmful effects of the sun. Stay vigilant and safeguard your skin while exploring the natural beauty Minamiuonuma has to offer!

Hourly UV Index in Minamiuonuma

The UV Index reveals a striking pattern of sun exposure throughout the day. Starting at 7:00 AM, the index is a modest 2, but as the sun climbs higher, it reaches its peak intensity at 11:00 AM and 12:00 PM with a soaring 11—a clear signal to seek shade! By 1:00 PM, it dips slightly to 10, yet remains in the high-risk zone until 2:00 PM when it begins to wane to 8. The afternoon continues its descent, hitting 5 at 3:00 PM, before falling to a much safer 1 by 5:00 PM. By 7:00 PM, the UV Index plummets to 0, ushering in a welcome reprieve from the sun. If you’re planning outdoor activities, the early hours are best avoided, especially around midday when the UV exposure is at its peak!

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
07:002low45 min
08:005moderate30 min
09:007high25 min
10:009very high15 min
11:0011extreme10 min
12:0011extreme10 min
13:0010very high15 min
14:008very high15 min
15:005moderate30 min
16:003moderate30 min
17:001low45 min
18:001low45 min
19:000low45 min

Monthly UV Index Trends in Minamiuonuma

Throughout the year, UV Index values fluctuate significantly, indicating varying levels of sun exposure risk. The high-risk months for UV exposure occur from March to August, peaking during the summer months of June, July, and August with an extreme UV Index of 11 and a burn time as short as 10 minutes. Visitors and residents are strongly advised to take preventive measures during these months, such as wearing sunscreen with high SPF, protective clothing, and seeking shade whenever possible. As the year progresses, the UV Index decreases to a moderate level by November and December, allowing for safer outdoor activities, but caution is still essential, especially in early spring and late summer when burn times can still be relatively short. Remember to stay vigilant and protect your skin from harmful UV rays!

Monthly Maximum UV Index for Minamiuonuma, Japan

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Minamiuonuma. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec4589101111119653
Data source: Statistical UV Index data for Minamiuonuma, 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 Minamiuonuma UV Index with Other Japan Cities

The table above highlights how UV exposure in Minamiuonuma 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.
Minamiuonuma's solar exposure compared to other cities in Japan. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Sapporo UVI2367999108532
Minamiuonuma4589101111119753
Yokohama UVI35891111111110754
Tokyo UVI35891111111110754
Nagoya UVI468101111111110753
Osaka UVI468111111121110753