Last updated: May 3, 2025
In Furukawa, Japan, understanding the UV Index is crucial for maintaining skin health and preventing sunburn, especially during the peak hours of sunlight. With a Cfa climate, residents and visitors alike should be aware that UV levels can soar, reaching a maximum index of 9 around midday. This knowledge empowers individuals to take necessary precautions, ensuring safer outdoor activities while enjoying the beautiful surroundings of Furukawa. By staying informed about the UV exposure risks, you can help protect your skin against harmful effects, allowing you to bask in the sun while minimizing health concerns.
The UV Index throughout the day showcases a fascinating peak and decline in solar intensity. Starting gently at 2 by 07:00, the intensity rapidly escalates, hitting 4 by 08:00. As the sun climbs higher, it reaches its zenith with a striking 9 at 10:00 and stays steady until noon. The afternoon brings a slight drop, with the index falling to 8 by 13:00, then tapering off to 6 at 14:00. As the day transitions into evening, the levels diminish further, ending at a mere 0 by 19:00. This captivating arc of UV exposure emphasizes the importance of sun protection, particularly during those peak hours when the index is at its highest. 🌞
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 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 seasons change, so does the UV Index, impacting both visitors and residents. From January to February, the UV Index remains at a moderate level (3-4), allowing for 30 minutes of sun exposure without significant risk. However, as spring approaches in March, the index climbs to high (7), reducing safe exposure to 25 minutes. The peak UV Index occurs during summer months, notably in July and August, where it reaches an extreme level (11) with a mere 10 minutes of safe exposure. September sees a decline to very high (9), while October returns to high (6) conditions, each allowing for a bit more time in the sun—25 minutes and 15 minutes respectively. From November to December, the UV risks lower again to moderate (3-4), allowing for 30 minutes. Visitors and residents should be especially cautious from March through September, particularly during peak summer months, by applying sunscreen, wearing protective clothing, and limiting sun exposure to mitigate the risk of UV-related health issues.
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 |
| Furukawa | 3 | 4 | 7 | 8 | 10 | 10 | 11 | 11 | 9 | 6 | 4 | 3 |
| 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 |