Last updated: May 3, 2025
Understanding the UV Index in Hiratacho, Japan, is crucial for safeguarding your skin health and preventing sunburn. With its typical humid subtropical climate (Cfa), Hiratacho experiences significant UV exposure, especially during midday hours when the index peaks at 10. This means that even a short time outdoors without adequate protection can lead to harmful effects on your skin. By staying informed about the daily UV levels, residents and visitors alike can take necessary precautions to enjoy the sun safely while protecting themselves from skin damage.
The UV Index throughout the day showcases a dynamic pattern of sun exposure. Starting gently at 07:00 with a UV Index of 2, it climbs steadily, peaking at 11:00 with a strong 10, indicating that it's essential to take sun safety precautions. The intensity remains high until 13:00, ensuring ample time for outdoor activities, but then the index begins to decline. By 15:00, it drops to 5, and as the sun sets, it falls to a softer 1 by 18:00. This data highlights the importance of sunscreen and protective measures during the peak midday hours when UV radiation is at its most potent.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 2 | low | 45 min |
08:00 | 3 | 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 | 10 | very high | 15 min |
13:00 | 10 | very high | 15 min |
14:00 | 8 | very high | 15 min |
15:00 | 5 | moderate | 30 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, the UV Index shows significant seasonal changes, with elevated levels during the warmer months from March to September. High-risk months for UV exposure include April to August, where the index peaks at 10-12, indicating very high to extreme exposure levels and a drastically reduced burn time of only 10-15 minutes. During this period, it is crucial for both visitors and residents to take precautions by seeking shade, wearing protective clothing, and applying sunscreen regularly to minimize the risk of skin damage. Conversely, the winter months of January, February, November, and December see a moderate UV index, allowing for a safer level of outdoor activity with a longer burn time of 30 minutes.
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 |
Hiratacho | 3 | 5 | 7 | 10 | 10 | 11 | 12 | 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 |