Last updated: June 2, 2025
In Kawamoto, Japan, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you gauge the risk of sunburn and long-term skin damage, ensuring you take appropriate precautions. Kawamoto's Cfa climate brings a diverse range of weather, but during peak hours, UV exposure can reach alarming levels, with indices climbing to 11 around noon. This means that, especially in summer, it's vital to stay informed and implement protective measures, allowing you to enjoy the outdoors safely.
The UV Index throughout the day reveals a striking pattern of sun exposure. Starting at 7:00 AM, the index registers a modest 2, gradually rising to 3 at 8:00 AM. As the sun climbs higher, the index surges to 6 by 9:00 AM and peaks impressively at 11:00 AM with a notable 10. The zenith of solar intensity occurs at 12:00 PM, reaching a high of 11—a clear reminder of the sun’s strength. The afternoon sees a slight decline, with values at 10 at 1:00 PM and dropping to 9 by 2:00 PM. As the day winds down, the UV Index dips to 6 at 3:00 PM, further decreasing to 4 at 4:00 PM. By 5:00 PM, it sinks to 2 and finally settles at a low of 1 by 6:00 PM, marking the end of a day filled with fluctuating UV exposure.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | 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 | 11 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences notable fluctuations, with significant increases during the spring and summer months. March marks the beginning of high-risk UV exposure, peaking in July and August at a severe UV Index of 12, where the recommended burn time is just 10 minutes. Both April and May maintain an extreme category, urging outdoor enthusiasts to exercise caution. From September onward, UV levels gradually decline, but the risk remains high into early fall. Residents and visitors are advised to protect themselves, especially during the high-risk months of March to September, by applying sunscreen, wearing protective clothing, and seeking shade to minimize sun exposure. As the year progresses, understanding and adapting to these changes can help ensure safety and enjoyment in outdoor activities.
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 |
| 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 |
| Kawamoto | 4 | 5 | 8 | 11 | 11 | 11 | 12 | 12 | 10 | 7 | 5 | 3 |
| Osaka UVI | 4 | 6 | 8 | 11 | 11 | 11 | 12 | 11 | 10 | 7 | 5 | 3 |