UV Index in Sakaiminato, Japan

Last updated: June 2, 2025

In Sakaiminato, Japan, staying informed about the UV Index is essential for protecting your skin and overall health. Understanding UV levels can help residents and visitors alike to prevent sunburn and lower the risk of long-term skin conditions. With a Cfa climate, Sakaiminato experiences significant UV exposure, particularly during the peak hours of 10 AM to 2 PM when the index reaches as high as 11. By keeping an eye on the UV Index, you can enjoy the beautiful outdoor scenery while safeguarding your skin against harmful rays.

Hourly UV Index in Sakaiminato

The UV Index paints a vivid picture of the sun’s strength throughout the day. Starting at a modest 2 at 07:00, the index gradually climbs as the sun ascends, reaching 4 by 08:00. By 09:00, it spikes to 6, and before long, it peaks at an impressive 11 at 12:00, marking the most intense exposure. The afternoon starts to cool slightly, with the index dropping to 10 by 13:00 and then tapering off through 8 at 14:00, 6 at 15:00, and back to 4 at 16:00. As the sun begins its descent, the UV Index falls to 2 by 17:00, lingering at 1 through the evening hours, creating a gentle reminder to enjoy the sun but also to stay mindful of its intensity during peak hours.

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
08:004moderate30 min
09:006high25 min
10:008very high15 min
11:0010very high15 min
12:0011extreme10 min
13:0010very high15 min
14:008very high15 min
15:006high25 min
16:004moderate30 min
17:002low45 min
18:001low45 min
19:001low45 min

Monthly UV Index Trends in Sakaiminato

Throughout the year, UV exposure significantly varies, peaking during the summer months of June through August, when the UV Index reaches extreme levels between 11 and 12 and the burn time drops to just 10 minutes. The high-risk months are particularly from April to September, where UV levels rise to very high to extreme values, requiring heightened awareness for sun protection. Visitors and residents should adopt protective measures, such as wearing sunscreen, hats, and sunglasses, especially during the peak UV hours from 10 a.m. to 4 p.m. Conversely, the winter months from December to February present a lower risk with a UV Index between 3 and 5. Although the risk decreases, it's still important to remain cautious, as UV radiation can still cause skin damage even on cloudy days.

Monthly Maximum UV Index for Sakaiminato, Japan

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Sakaiminato. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec457101011121110753
Data source: Statistical UV Index data for Sakaiminato, 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 Sakaiminato UV Index with Other Japan Cities

The table above highlights how UV exposure in Sakaiminato 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.
Sakaiminato's solar exposure compared to other cities in Japan. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Sapporo UVI2367999108532
Yokohama UVI35891111111110754
Tokyo UVI35891111111110754
Sakaiminato457101011121110753
Nagoya UVI468101111111110753
Osaka UVI468111111121110753