Last updated: May 3, 2025
In Kunigami, Japan, staying informed about the UV Index is essential for protecting your skin and overall health. With its Cfa climate, this region experiences significant sun exposure, especially during the peak hours, where UV levels can soar to an extreme 13 around noon. Understanding these levels is crucial not just for preventing painful sunburns, but also for reducing long-term skin issues. As you enjoy the beautiful outdoors, keeping an eye on the UV Index will help you make informed decisions on sun protection measures, ensuring that your adventures are both enjoyable and safe.
The UV Index for the day exhibits a striking daytime peak, rising steadily from a gentle 1 at 07:00 to an intense 13 by 12:00. As the sun reaches its zenith, the 11:00 and 12:00 hours warn of heightened exposure, with the index hitting its maximum at 13:00 before beginning its gradual decline. By 15:00, it slips to 7, reminding us that even in the afternoon, protection is vital. As the day winds down, the UV levels fall back to a safe 1 by 18:00, ensuring a return to safer conditions for evening activities. Stay vigilant and protect your skin during those midday hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV index levels show significant seasonal changes, with the highest risk months occurring from March to September, when the index peaks at 13 and falls under the extreme exposure category, indicating a burn time of merely 10 minutes. February and October also present high to very high UV indexes of 9, necessitating caution with a burn time of 15 minutes. In contrast, January and December are comparatively milder, with UV indexes of 7 and 6 respectively, resulting in a high exposure category and longer burn times of 25 minutes. To ensure safety, residents and visitors should take preventive measures—such as seeking shade, wearing protective clothing, and applying sunscreen—especially during the peak months of April through September when sun exposure can lead to harmful skin damage in a very short time.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Kunigami | 7 | 9 | 11 | 12 | 13 | 13 | 13 | 13 | 13 | 9 | 9 | 6 |