Last updated: May 3, 2025
Understanding the UV Index in Mobetsu, Japan is crucial for protecting your skin and overall health. This vibrant town, characterized by its Dfb climate, experiences varying UV levels throughout the day, peaking at a significant 8 around midday. Awareness of these UV levels is essential for sunburn prevention and maintaining long-term skin health, as exposure to high UV radiation can lead to harmful effects. With typical UV risks on sunny days, knowing how to safeguard yourself from harmful rays is key to enjoying all that Mobetsu's beautiful outdoors has to offer.
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 |
Throughout the year, the UV Index experiences notable seasonal variations. January and December mark the lowest UV levels, categorized as low, with a burn time of 45 minutes. As spring approaches, both February and March see an increase to moderate levels, indicating a burn time of 30 minutes. The UV Index peaks in the summer months of May through August, reaching very high levels (UV Index 8-9) with a significantly reduced burn time of just 15 minutes. As autumn sets in, September returns to a high exposure category, allowing for a 25-minute burn time, while October and November shift back to moderate. Given these fluctuations, it’s crucial for visitors and residents to take precautions during the high-risk months of May through August, including seeking shade, wearing protective clothing, and applying sunscreen to prevent skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mobetsu | 2 | 3 | 5 | 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 |