Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Kamiichi, Japan, where high UV levels can pose significant risks to skin health. With its Cfa climate characterized by warm summers, the UV exposure can peak sharply, especially around noon when the index reaches levels of 10, heightening the chances of sunburn and long-term skin damage. Being aware of daily UV levels enables you to take proactive measures to protect your skin, ensuring safe outdoor activities while enjoying the beautiful surroundings of Kamiichi. Whether it's planning your day at the beach or simply taking a stroll, knowing the UV Index can make all the difference in safeguarding your health.
The UV Index paints a vivid picture of the sun’s intensity throughout the day. At sunrise (07:00), the index starts modestly at 2, but by 08:00, it rises to a comfortable 4. The sun gains strength, with readings escalating to 6 by 09:00. The peak arrives at 11:00 and 12:00, where the index reaches a striking 10—a clear signal to seek shade or apply sunscreen! As the afternoon progresses, we see a decline; the UV Index drops to 9 at 13:00 and gradually decreases to 5 by 15:00. The late afternoon brings a gentle taper off to 3 by 16:00, before plummeting to 1 by 17:00 and finally settling at 0 as evening descends (19:00). Stay sun-smart and enjoy the daylight safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | 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 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, with the peak values occurring in the summer months. Notably, March through August sees a dramatic rise in UV exposure, particularly in June, July, and August when the index reaches an extreme level of 11, resulting in a rapid burn time of just 10 minutes. Conversely, the winter months of January, November, and December show much lower UV levels, described as moderate, with burn times extending to 30 minutes. Visitors and residents are advised to be especially cautious from March to September, when UV exposure can lead to skin damage in a very short time. It is essential to wear sunscreen, seek shade, and wear protective clothing during these high-risk months to minimize health risks associated with UV radiation.
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 |
| Kamiichi | 4 | 5 | 8 | 10 | 10 | 11 | 11 | 11 | 10 | 7 | 5 | 3 |
| 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 |