Last updated: July 2, 2025
In Takahama, Japan, being aware of the UV Index is essential for safeguarding your skin and overall health. Understanding UV levels plays a crucial role in preventing sunburn and protecting against long-term skin damage, especially during the peak hours when the index spikes. With a humid subtropical climate characteristic of the Cfa zone, Takahama experiences significant UV radiation, particularly between 10:00 AM and 2:00 PM, when levels soar to 11. This awareness not only helps you plan your outdoor activities safely but also ensures that you enjoy the beautiful coastal environment while prioritizing your skin’s well-being.
As the sun rises, the UV Index begins its ascent, starting at a gentle 2 at 07:00. By 08:00, it climbs to 4, indicating that protective measures are beginning to be advisable. The intensity peaks at 11 during the 11:00 and 12:00 hours, marking the time when sunlight is most potent. As the afternoon progresses, the index starts to decline; by 14:00, it drops to 8, and further diminishes to 6 by 15:00. As evening approaches, the UV Index wanes significantly, reducing to 3 at 16:00 and sinking to a mild 1 by 18:00, indicating a much lower risk. Overall, it’s a sun-soaked day, urging outdoor enthusiasts to be mindful of sun exposure, especially during those 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 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 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 | 3 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels show significant seasonal variation, peaking during the late spring and summer months from May to August, when the UV Index reaches extreme levels of 11, indicating a burn time of just 10 minutes. The high-risk months for sun exposure are May, June, July, and August, when it’s essential for residents and visitors to take precautions such as wearing protective clothing, applying sunscreen, and seeking shade during peak sunlight hours. In contrast, January, February, November, and December present a lower risk with moderate UV Index levels, allowing more time for safe sun exposure (up to 30 minutes). As UV levels begin to drop in the fall months, particularly in October, it's still wise to maintain sun safety practices, especially as the index remains relatively high.
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 |
| Takahama | 4 | 5 | 8 | 10 | 11 | 11 | 11 | 11 | 10 | 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 |