Last updated: August 1, 2025
In Asahikawa, Japan, staying informed about the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels helps you take preventive measures against sunburn and long-term skin damage, especially during peak hours when the index hits a high of 10 around noon. Nestled in a Dfb climate zone, Asahikawa experiences a unique blend of seasonal changes, making it essential to be aware of UV exposure risks throughout the year. With midday sun intensity reaching its peak, embracing UV Index awareness can pave the way for enjoyable outdoor activities while keeping your skin safe.
The UV Index today showcased a striking pattern, peaking with an intense maximum of 10 at 11:00 AM. As the sun climbed higher, levels steadily rose from 3 at 7:00 AM to a vibrant 8 by 10:00 AM, signaling the need for sun protection. After reaching its zenith, the index gradually declined, dropping to 9 at noon and tapering off throughout the afternoon—falling to 4 by 3:00 PM and dwindling to a mere 1 by 5:00 PM. This data serves as a reminder that while the sun's rays can be captivating, protecting your skin during peak hours is crucial for a safe and enjoyable outdoor experience!
| 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 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 8 | very high | 15 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 experiences significant seasonal changes, impacting the risk of sunburn and the need for protective measures. The highest risk months are from May to September, characterized by very high UV Index levels of 9 to 10 and a burn time of just 15 minutes. In contrast, January and December present a much lower risk with a UV Index of 2, allowing for longer exposure times of 45 minutes. Residents and visitors are advised to take special care during peak months by wearing protective clothing, using sunscreen, and seeking shade to minimize UV exposure. As conditions fluctuate, it's essential to stay informed and adjust sun protection strategies accordingly.
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 |
| Asahikawa | 2 | 3 | 6 | 7 | 9 | 9 | 10 | 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 |