Last updated: July 2, 2025
In Yatsuomachi-higashikumisaka, Japan, being aware of the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels can help prevent sunburn and minimize the long-term risks of skin damage, particularly in this Cfa climate, where the sun's rays can be intense. With peak UV Index values reaching as high as 12 around noon, awareness becomes essential for outdoor enthusiasts and residents alike. By monitoring these levels, you can make informed decisions about sun protection and enjoy the beautiful, sunny days this region has to offer, all while prioritizing your skin's health.
The UV Index today shows a dynamic pattern of sun intensity as the day unfolds. Starting off at a mild 2 at 7:00 AM, the index climbs steadily, reaching a moderate 4 by 8:00 AM. As the sun rises higher, UV levels soar to 7 at 9:00 AM, peaking at a sizzling 12 at noon, indicating a high risk of harm from unprotected sun exposure. Following the peak, the index gradually declines, dropping to 8 by 2:00 PM and then further to 3 by 4:00 PM, before settling back into the safe zone with a low 1 at 6:00 PM. As twilight approaches, the UV Index drops to 0 by 7:00 PM, emphasizing the importance of sun protection during the day's peak hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV index levels fluctuate, with the most significant increases occurring from March to September. During these months, particularly in May, June, July, and August, the UV index reaches its peak at 12, categorized as extreme, with a burn time of just 10 minutes. March and April also present high risks, featuring very high UV levels of 9 and 10 respectively. Visitors and residents should be particularly vigilant in these high-risk months, applying sunscreen, wearing protective clothing, and seeking shade whenever possible. As UV levels decrease from late summer into fall and winter, with January and December categorized as having moderate exposure (UV index 4), precautions remain advisable to ensure skin protection year-round.
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 |
| Yatsuomachi-higashikumisaka | 4 | 6 | 9 | 10 | 11 | 11 | 12 | 12 | 10 | 7 | 5 | 4 |