Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Tamana, Japan, where the climate is classified as Cfa, resulting in warm summers and moderate UV exposure. As the sun’s intensity peaks, particularly between 11:00 AM and 1:00 PM with UV levels reaching 11, being aware of these fluctuations is essential for effective sunburn prevention and maintaining skin health. By grasping the risks associated with varying UV levels throughout the day, residents can take proactive measures to shield themselves from harmful effects, ensuring enjoyable outdoor activities without compromising their well-being. Stay informed and protect your skin to enjoy all that Tamana's beautiful climate has to offer!
At sunrise, the UV Index starts gently at 1 at 07:00, making it a safe time for morning activities. However, as the sun climbs higher, the intensity surges, reaching 3 by 08:00 and escalating to a peak of 11 between 12:00 and 13:00. This is the crucial window when protection from the sun is essential, as exposure can lead to skin damage. As afternoon progresses, the index gradually declines, settling back to 9 by 14:00. By the time evening approaches, the UV Index dips to 2 at 17:00 and returns to a minimal 1 by 18:00, signaling a return to safer levels. Whether you’re planning outdoor fun or just soaking up the sun, be mindful of these fluctuations for optimal UV safety!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | 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, seasonal changes in UV exposure highlight periods of heightened risk for residents and visitors. From January to February, the UV Index rises from 4 (moderate) to 6 (high), reducing safe exposure time to 25 minutes. Significant increases occur in March, reaching 8 (very high), and peaking during the summer months of April to August at 11-12 (extreme), where only 10 minutes of unprotected exposure is advisable. The risk, while still present, decreases again in September and returns to high levels in October and November with a UV Index of 6-7, allowing for 25 minutes of safe exposure. As such, it is crucial for visitors and residents to remain vigilant, especially during the summer, taking precautions like wearing sunscreen, protective clothing, and seeking shade during peak hours to mitigate the risk of UV-related health issues.
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 |
| Tamana | 4 | 6 | 8 | 11 | 11 | 11 | 12 | 12 | 11 | 7 | 6 | 4 |