Last updated: July 2, 2025
In Nakashibetsu, Japan, staying aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels is essential to prevent sunburn and long-term skin damage, especially during the peak hours of sunlight. With a Dfc climate, Nakashibetsu experiences varying UV exposure risks throughout the day, typically peaking at a UV Index of 10 around noon. By being informed about these levels, you can enjoy the beautiful outdoors while ensuring your skin remains safe from harmful UV rays. Stay sun-smart and embrace the beauty of Nakashibetsu!
As the sun rises, the UV Index begins its ascent, peaking spectacularly between 11:00 AM and 12:00 PM at a maximal value of 10, signaling a high risk for unprotected skin. Early morning hours, from 7:00 AM to 9:00 AM, see a gentle increase from a mild 3 to a moderate 7. However, by 10:00 AM, the intensity climbs sharply to 9, urging caution for sun exposure. After the midday zenith, the index gradually descends, dropping to 8 at 1:00 PM and continuing to fall until it reaches a minimal 0 by 7:00 PM. This data emphasizes the importance of sun safety, particularly during those peak hours when the sun’s rays are most potent.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits significant seasonal fluctuations, with notable increases during the spring and summer months. From March to September, the UV Index reaches particularly high levels, marking May, June, July, August, and September as high-risk months for sun exposure. During this period, the UV Index often registers as very high (8 to 10), resulting in a reduced burn time of just 15 minutes. Residents and visitors should take precautionary measures, such as wearing protective clothing, applying sunscreen regularly, and seeking shade, especially when UV levels peak during the afternoon hours. In contrast, the winter months of January, February, October, November, and December present lower risks, with UV ratings between 2 and 5, allowing for longer safe exposure times. It is important to remain vigilant year-round, adjusting sun safety practices according to the changing UV Index.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nakashibetsu | 2 | 3 | 6 | 7 | 8 | 9 | 10 | 9 | 8 | 5 | 3 | 2 |
| Sapporo UVI | 2 | 3 | 6 | 7 | 9 | 9 | 9 | 10 | 8 | 5 | 3 | 2 |
| Yokohama UVI | 3 | 5 | 8 | 9 | 11 | 11 | 11 | 11 | 10 | 7 | 5 | 4 |
| Tokyo UVI | 3 | 5 | 8 | 9 | 11 | 11 | 11 | 11 | 10 | 7 | 5 | 4 |
| Nagoya UVI | 4 | 6 | 8 | 10 | 11 | 11 | 11 | 11 | 10 | 7 | 5 | 3 |
| Osaka UVI | 4 | 6 | 8 | 11 | 11 | 11 | 12 | 11 | 10 | 7 | 5 | 3 |