Last updated: May 3, 2025
Understanding the UV Index in Nakashibetsu, Japan, is essential for protecting your skin and overall health. With peak UV levels reaching 9 around midday, awareness becomes crucial in preventing sunburn and minimizing long-term skin damage. Nakashibetsu's Dfc climate means cool summers and snowy winters, but summer days can still pose significant UV exposure risks. By staying informed about the UV Index, residents can enjoy the outdoors safely while safeguarding their skin from harmful rays.
The UV Index reflects the sun's intensity throughout the day, peaking at 11:00 AM with a maximum value of 9, indicating a high risk of harm from unprotected sun exposure. Starting from a gentle 3 at 07:00, the index rises steadily, reaching 8 by 10:00 AM and peaking at 9 just before noon. As the afternoon unfolds, the intensity begins to decline, dipping to 5 by 14:00, and further decreasing to a low of 1 by 17:00. The day wraps up with a 0 at 19:00, suggesting that the sun's rays pose little threat after sunset. Stay sun-safe by applying sunscreen during peak hours and seeking shade as needed!
| 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 | 8 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 3 | 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 |