Last updated: May 3, 2025
In Ashoro, Japan, understanding the UV Index is crucial for safeguarding your skin and overall health. With its Dfb climate, Ashoro experiences varying levels of UV exposure, particularly peaking from late morning to early afternoon. Awareness of these UV levels helps you take proactive steps to prevent sunburn and long-term skin damage. On sunny days, UV Index readings can reach as high as 9 between 11:00 AM and 12:00 PM, making it essential to take precautions during these hours. Stay informed and enjoy the sunshine safely!
As the sun rises, the UV Index begins a steady ascent, hitting a moderate 3 at 7:00 AM. By 8:00 AM, it climbs to 5, signaling the start of a sun-filled day. The intensity peaks at 11:00 AM and 12:00 PM with a strong 9, urging sun-seekers to take precautions. The index then dips through the afternoon: to 7 by 1:00 PM, to 5 at 2:00 PM, and finally settling at 4 by 3:00 PM. As the evening approaches, the UV Index continues to fall, reaching 1 by 5:00 PM, marking it safe for outdoor activities without excessive protection, and hits 0 by 7:00 PM as the sun sets. Stay mindful of the sun’s intensity, especially during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 5 | moderate | 30 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 demonstrates significant seasonal variation, with particularly high-risk months occurring from April to September. During this period, the UV Index frequently reaches levels categorized as very high, peaking at 10 in June and July. This translates to a dangerously short burn time of just 15 minutes, emphasizing the importance of sun protection, including sunscreen, hats, and protective clothing. As the year progresses into October and November, the UV Index decreases to more moderate levels, allowing for greater exposure times of 30 minutes without immediate risk of skin damage. Visitors and residents are advised to remain vigilant during peak UV months, seeking shade and reapplying sunscreen as necessary to safeguard their skin health.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ashoro | 2 | 3 | 5 | 8 | 8 | 10 | 10 | 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 |