Last updated: July 2, 2025
Staying informed about the UV Index in Shizunai-furukawacho, Japan is crucial for protecting your skin and overall health. Understanding UV levels helps prevent sunburn and long-term skin damage, allowing you to enjoy the sun safely. With a climate characterized by warm summers and cold winters, Shizunai-furukawacho experiences varying UV exposure risks throughout the year. Notably, during peak hours—from 10:00 AM to 2:00 PM—the UV Index can soar to 10, indicating a very high risk of harm from unprotected sun exposure. Stay safe and informed as you bask in the beauty of your surroundings!
The hourly UV Index paints a clear picture of the day's intensity from morning to evening. Starting at a mild 3 at 7:00 AM, the day warms up quickly, peaking at a robust 10 between 11:00 AM and 12:00 PM—the perfect time to seek shelter or apply sunscreen. After that fleeting high, the UV Index gradually declines, dropping to 4 by 3:00 PM and further diminishing to 1 by 5:00 PM. As the sun sets, the UV levels plummet to a safe 0 by 7:00 PM. This data underscores the importance of protecting your skin during peak hours, especially when the sun is at its strongest.
| 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 | 9 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | 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 | 0 | low | 45 min |
Throughout the year, seasonal UV changes present varying levels of risk for sun exposure. The high-risk months are from April to September, with June, July, and August experiencing peak UV Index levels of 10, categorized as very high, where the burn time is dramatically reduced to just 15 minutes. In contrast, UV exposure is at its lowest during January and December, with an index of 2 and a burn time of 45 minutes. Visitors and residents are advised to use sun protection measures such as sunscreen, hats, and sunglasses during high-risk months, especially between April and September, to minimize skin damage and health risks associated with excessive UV exposure.
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 |
| Shizunai-furukawacho | 2 | 3 | 5 | 8 | 9 | 10 | 10 | 10 | 8 | 6 | 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 |