Last updated: May 3, 2025
In Asahikawa, Japan, awareness of the UV Index is crucial for protecting your skin and maintaining overall health. Understanding UV levels can help you prevent painful sunburns and reduce the risk of long-term skin damage. Located in a Dfb climate zone, Asahikawa experiences significant UV exposure during the summer months, with midday indices peaking at 9—indicating a high risk for harm from unprotected sun exposure. Stay informed about UV levels to enjoy the beautiful outdoors safely and keep your skin healthy!
At dawn, the UV Index begins at a mild 3 by 07:00, gradually climbing as the sun rises. By 08:00, it reaches 5, hinting at returning outdoor activities. The intensity peaks at 11:00 with a robust 9, signaling the need for sun protection. From there, it gently declines, recording 8 at 12:00 and 7 at 13:00, before tapering off further to 6 by 14:00. As afternoon gives way to evening, the index drops to 4 at 15:00 and continues its descent to a low of 1 by 17:00 and 18:00. Finally, the UV reaches 0 as the sun sets at 19:00, marking a day that started softly but peaked in intensity.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 9 | 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 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 |