Last updated: May 3, 2025
Understanding the UV Index in Shinshimokawa, Japan, is crucial for safeguarding your skin health amidst the region's unique climate. With a Dfb climate zone, Shinshimokawa experiences distinct seasonal variations, but during sunny days, UV levels can reach alarming heights, peaking at 8 between 10:00 AM and 12:00 PM. Awareness of these UV levels is vital for effective sunburn prevention and reducing long-term skin damage. By monitoring the UV Index, residents and visitors can make informed choices about sun protection, ensuring their time outdoors remains safe and enjoyable.
The UV Index throughout the day showcases a dynamic increase in sun exposure, reaching its peak at 10:00 AM with a level of 8, signaling a higher risk of harm from unprotected sun exposure. As the day progresses, the index starts to decline gradually; it's still notable at 11:00 AM and 12:00 PM, where it holds steady at 8. By 1:00 PM, the index drops slightly to 7, and continues to ease down to 5 by 2:00 PM, and 4 by 3:00 PM. As the sun begins to set, the UV Index decreases even further, settling at 1 by 5:00 PM and dropping to 0 by 7:00 PM, indicating a safe end to sun exposure for the day. Plan your activities accordingly to maximize safety and enjoyment in the sunlight!
| 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 | 8 | very high | 15 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 5 | moderate | 30 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 |
As the seasons change, so does the UV Index, significantly affecting outdoor activities and skin health. From the low exposure of January with a UV Index of 2 to the very high levels reaching 9 in the summer months of June, July, and August, it’s crucial for residents and visitors to be mindful of UV radiation. The high-risk months are May through August, where the UV Index consistently remains very high, resulting in a rapid burn time of just 15 minutes. During this period, it is advised to take extra precautions such as wearing protective clothing, applying sunscreen regularly, and seeking shade to minimize exposure. As summer transitions to fall, the UV levels decrease, but September still carries a high risk with an index of 7. By November and December, the risk drops back to moderate and low, respectively, allowing more leisurely outdoor activities. Stay informed and protect your skin to enjoy the great outdoors safely!
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Shinshimokawa | 2 | 3 | 6 | 7 | 8 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
| 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 |