Last updated: May 3, 2025
In Obiracho, Japan, being aware of the UV Index is crucial for safeguarding your skin health and preventing painful sunburns. With a Dfb climate, this region experiences varied UV exposure throughout the day, peaking between 11:00 AM and 1:00 PM when levels reach an alerting 8. Understanding UV levels helps residents and visitors alike take proactive measures against potential skin damage, ensuring enjoyable time outdoors while minimizing risk. As the sun's intensity fluctuates, staying informed can make all the difference in protecting your skin and maintaining overall health.
The UV Index shows a dynamic shift throughout the day, starting with a gentle maximum of 3 at 7:00 AM. As the sun rises higher, we see a gradual increase, peaking at a notable 8 between 11:00 AM and 12:00 PM. This is prime time to seek shade or apply sunscreen, as the intensity of UV rays can lead to sunburn in no time. By the early afternoon, the index starts to decline, dipping to 6 at 2:00 PM, then further to 4 by 3:00 PM. After that, a steady drop occurs, plunging to a safe 0 by 7:00 PM. It’s crucial to stay vigilant during those peak hours to protect your skin!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 6 | 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 |
Throughout the year, the UV Index fluctuates, indicating varying levels of sun exposure risk. January and December present the lowest UV levels (2), categorized as low, allowing for longer exposure times of 45 minutes without burning. As spring approaches, February and March see a moderate rise in UV Index (3 to 5), with a reduced burn time of 30 minutes. April marks a significant shift to a high exposure category (UV Index 7), followed by the very high category from May to September, peaking at an index of 9 during the summer months, where the burn time reduces sharply to just 15 minutes. October and November see a decline back to a moderate level (UV 5 and 3, respectively). Visitors and residents should be particularly cautious during the high-risk months of May through September, applying sunscreen regularly and seeking shade to minimize the risk of sunburn during these times of intense UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Obiracho | 2 | 3 | 5 | 7 | 8 | 9 | 9 | 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 |