Last updated: July 2, 2025
Understanding the UV Index in Wakkanai, Japan, is crucial for safeguarding your skin against harmful UV radiation. With peak levels reaching 9 during midday hours, awareness of these UV levels can be instrumental in preventing sunburn and maintaining overall skin health. Wakkanai's Dfb climate brings a unique mix of seasonal weather, which can often lead to unexpected sun exposure, even on overcast days. By staying informed on the daily UV Index, residents and visitors alike can take proactive steps to protect themselves and enjoy the beautiful outdoors safely.
The UV Index today shows a dynamic journey through the hours, peaking impressively at 9 between 11:00 AM and 12:00 PM, signaling a high level of sun exposure. Starting the day at 3 at 07:00 AM, it steadily climbs to 6 by 09:00 AM and reaches its zenith at 10:00 AM with an 8. As the sun moves across the sky, it maintains a strong presence, remaining at 9 during the late morning before gradually descending to 4 by 03:00 PM. The decline continues into the late afternoon, dropping to 1 by 17:00 PM until sunset. It's essential to take precautions during the peak hours to protect your skin from harmful UV radiation!
| 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 | 9 | very high | 15 min |
| 12:00 | 9 | 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 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure varies significantly, with the high-risk months for UV radiation occurring from April to August. During this period, the UV Index peaks at 9, indicating a very high risk of harm from unprotected sun exposure, with a burn time as short as 15 minutes. In contrast, January and December see the lowest UV Index values (2 and 1, respectively), classified as low exposure, allowing for longer burn times of 45 minutes. Visitors and residents should be particularly vigilant during the high-risk months: wearing sun protection, seeking shade, and limiting outdoor activities during peak hours to mitigate the risks associated with UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wakkanai | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 7 | 4 | 3 | 1 |
| 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 |