Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Teshikaga, Japan, where the combination of a Dfb climate and varying sunlight exposure can significantly impact skin health. With UV levels peaking at 9 around midday, it's essential to be aware of your sun exposure to prevent harmful effects such as sunburn and long-term skin damage. As Teshikaga experiences distinct seasonal changes, knowing the UV index helps locals and visitors alike make informed decisions about sun protection during outdoor activities, especially when the sun shines at its strongest between 10 AM and 2 PM. Stay informed and shield yourself from the sun's rays!
The UV Index data reveals a dynamic sun exposure pattern throughout the day. Early risers at 7:00 AM start with a moderate index of 3, which quickly escalates as the sun climbs. By 10:00 AM, the index peaks at a robust 8, reaching a stunning 9 at 11:00 AM, signaling a prime moment for sun safety precautions. The afternoon shows some decline, dipping to 5 by 2:00 PM and further to 4 at 3:00 PM. As the sun begins to set, the UV intensity diminishes significantly, dropping to 1 by 5:00 PM, and eventually dwindling to 0 by 7:00 PM. This data underscores the importance of being vigilant during the midday hours for effective sun protection.
| 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 | 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 |
The UV Index exhibits significant seasonal fluctuations, with notable increases during the spring and summer months. From March to September, the UV Index reaches particularly high levels, marking May, June, July, August, and September as high-risk months for sun exposure. During this period, the UV Index often registers as very high (8 to 10), resulting in a reduced burn time of just 15 minutes. Residents and visitors should take precautionary measures, such as wearing protective clothing, applying sunscreen regularly, and seeking shade, especially when UV levels peak during the afternoon hours. In contrast, the winter months of January, February, October, November, and December present lower risks, with UV ratings between 2 and 5, allowing for longer safe exposure times. It is important to remain vigilant year-round, adjusting sun safety practices according to the changing UV Index.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Teshikaga | 2 | 3 | 6 | 7 | 8 | 9 | 10 | 9 | 8 | 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 |