Last updated: June 2, 2025
In Misasa, Japan, understanding the UV Index is crucial for safeguarding your skin and overall health. With its Cfa climate, this region experiences significant UV exposure, especially during peak hours when the index can soar to a high of 11 around noon. Awareness of UV levels is essential not only for preventing painful sunburn but also for reducing the long-term risks associated with skin damage. On sunny days, be prepared to take protective measures as values reach 6 by 9 AM and climb to 8 or above shortly after. Don't let the sun catch you off guard—stay informed and enjoy the beauty of Misasa safely!
The UV Index paints a vivid picture of the sun’s strength throughout the day. Starting at a modest 2 at 07:00, the index gradually climbs as the sun ascends, reaching 4 by 08:00. By 09:00, it spikes to 6, and before long, it peaks at an impressive 11 at 12:00, marking the most intense exposure. The afternoon starts to cool slightly, with the index dropping to 10 by 13:00 and then tapering off through 8 at 14:00, 6 at 15:00, and back to 4 at 16:00. As the sun begins its descent, the UV Index falls to 2 by 17:00, lingering at 1 through the evening hours, creating a gentle reminder to enjoy the sun but also to stay mindful of its intensity during peak hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | 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 | 8 | 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 exhibits significant fluctuations, indicating varying levels of sun exposure risk. From January to February, the UV Index remains moderate at 4 to 5, allowing for up to 30 minutes of sun exposure without concern. As March approaches, the index rises to 7, categorized as high, with recommended burn time dropping to 25 minutes. The peak months for UV exposure are April through August, where the index reaches 10 to 11, classified as very high to extreme, significantly reducing safe exposure time to just 10-15 minutes. September sees a decrease to a very high index of 9 before tapering off to 7 in October, and returning to moderate levels of 5 in November and 3 in December. Therefore, it is crucial for visitors and residents to take precautions from March to September by wearing sunscreen, protective clothing, and limiting direct sun exposure, especially during midday hours when the UV radiation is at its most intense.
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 |
| Misasa | 4 | 5 | 7 | 10 | 10 | 11 | 11 | 11 | 9 | 7 | 5 | 3 |
| 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 |