Last updated: July 2, 2025
In Minamishibetsucho, Japan, understanding the UV Index is crucial for maintaining skin health and minimizing sunburn risk. With the area's Dfb climate that features warm summers, UV levels can reach significant heights, particularly around midday, where they peak at a concerning 9. Being informed about these levels can empower residents and visitors alike to take proactive measures against harmful UV exposure, ensuring safe outdoor enjoyment and long-term skin protection. Stay vigilant and enjoy the sun responsibly!
The UV Index throughout the day reveals a striking peak of 9 at both 11:00 AM and 12:00 PM, indicating a high potential for skin damage, so sun protection is essential during these hours. As the morning unfolds, the index rises from a manageable 3 at 7:00 AM to a more intense 8 by 10:00 AM. Following the midday high, there's a gradual decline, providing some relief as it falls to 6 at 2:00 PM, and continues dropping to a more comfortable 1 by 5:00 PM. Be mindful of these fluctuations if you're planning outdoor activities—maximize your fun while staying safe in the sun!
| 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 | 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 |
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Minamishibetsucho | 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 |