UV Index in Otsuchi, Japan

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Otsuchi, Japan, as it provides essential information about daily sun exposure. With UV levels peaking at 9 during midday, awareness can help prevent sunburn and contribute significantly to long-term skin health. Otsuchi, characterized by its Cfb climate, presents unique sunlight challenges, particularly in summer months when UV radiation is at its highest. By keeping an eye on the UV Index, you can enjoy the beautiful outdoors while protecting your skin from harmful effects.

Hourly UV Index in Otsuchi

The UV Index climbs steadily throughout the morning, starting at a manageable 3 at 07:00 and surging to a peak of 9 between 10:00 and 12:00. During these hours, sun protection is crucial as the intensity remains high, ideal for outdoor activities if precautions are taken. As the afternoon sets in, the index begins to decline, dropping to 8 by 13:00, and then tapering off to 6 at 14:00. By the afternoon, the risks lessen significantly, with readings falling to 4 at 15:00, and a gentle decline continues into the evening, reaching 1 by 17:00 and finally settling at 0 after 19:00. This pattern emphasizes the importance of maximizing sun safety during the midday hours, where the sun's rays are at their strongest.

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
09:007high25 min
10:009very high15 min
11:009very high15 min
12:009very high15 min
13:008very high15 min
14:006high25 min
15:004moderate30 min
16:002low45 min
17:001low45 min
18:001low45 min
19:000low45 min

Monthly UV Index Trends in Otsuchi

As the seasons change, so do the UV Index levels, indicating varying levels of sun exposure risk throughout the year. From January to February, the UV Index remains moderate (3 to 4), with a burn time of 30 minutes. However, March marks the beginning of high-risk months, as the index rises to 6 (high) with a reduced burn time of 25 minutes. April sees a significant jump to 8 (very high), while May peaks at 9, both months requiring protective measures within 15 minutes of sun exposure. The summer months of June and July are especially concerning, with June reaching an extreme UV Index of 11 and July at 10, where a brief 10 to 15 minutes can lead to burns. Throughout August and September, the index remains high (10 and 9 respectively), before declining in October to a more manageable 6 (high) and returning to moderate levels in November and December. Visitors and residents alike should exercise caution, especially during the late spring and summer months, by wearing protective clothing, using sunscreen, and seeking shade to minimize UV damage.

Monthly Maximum UV Index for Otsuchi, Japan

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Otsuchi. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec346891110109643
Data source: Statistical UV Index data for Otsuchi, 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 Otsuchi UV Index with Other Japan Cities

The table above highlights how UV exposure in Otsuchi 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.
Otsuchi's solar exposure compared to other cities in Japan. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Sapporo UVI2367999108532
Otsuchi346891110109643
Yokohama UVI35891111111110754
Tokyo UVI35891111111110754
Nagoya UVI468101111111110753
Osaka UVI468111111121110753