Last updated: May 3, 2025
In Sarabetsu, Japan, staying aware of the UV Index is crucial for protecting yourself from harmful sun exposure. Understanding UV levels not only helps prevent painful sunburn but also promotes long-term skin health. With a Dfb climate, Sarabetsu experiences distinct seasonal variations, resulting in significant UV exposure risks, particularly during the midday hours when the UV Index peaks at levels of 9. Being informed about these levels ensures that residents and visitors can enjoy the outdoors safely while minimizing the risks associated with sun exposure.
As the sun rises, the UV Index begins its ascent, peaking at 9 between 11:00 AM and 12:00 PM, indicating a high risk of harm from unprotected sun exposure. Early risers will find a more manageable 3 at 7:00 AM, but as the day progresses, the intensity escalates, reaching a robust 8 by 10:00 AM and hitting its zenith with a 9 at noon. A gradual decline follows, with values decreasing to 7 at 1:00 PM, and dipping further to 4 by 3:00 PM. As evening approaches, the UV levels drop sharply, falling to 1 by 5:00 PM and fading to 0 by 7:00 PM. It's a day that reminds us to be vigilant under the sun's powerful rays, especially during the midday hours!
| 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 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 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 year progresses, the UV Index displays significant seasonal changes, with the highest levels observed during the summer months. From April to September, the UV Index reaches its peak at 10 for several months, classifying these as very high exposure periods with a short burn time of just 15 minutes. May, June, July, and August are particularly high-risk months for sunburn, and visitors and residents are strongly advised to take precautions, such as wearing sunscreen and protective clothing while limiting sun exposure during peak hours. In contrast, the UV Index is considerably lower in January (3), February (4), and November (3), allowing for longer exposure times, although caution is still recommended. By December, the UV Index drops to a low level of 2, with a burn time of up to 45 minutes, making it safer for outdoor activities. Overall, understanding these seasonal UV changes is essential for ensuring skin safety throughout the year.
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 |
| Sarabetsu | 3 | 4 | 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 |