Last updated: August 1, 2025
Understanding the UV Index is crucial for residents of Tomohon, Indonesia, a beautiful city nestled in a tropical climate known for its stunning scenery and vibrant culture. With high UV levels peaking during midday, awareness of these levels is vital in preventing sunburn and protecting skin health. With a climate characterized by consistent exposure to the sun, particularly between 10 AM and 2 PM when indices can soar to a staggering 13, knowing when to seek shade or apply sunscreen can make all the difference in safeguarding your well-being. Stay informed and enjoy the sun safely in Tomohon!
The UV Index data reveals a dynamic shift throughout the day, starting with a low 1 at 07:00 that quickly rises as the sun climbs higher. By 09:00, the index reaches 7, indicating moderate exposure risk, which escalates to a peak of 13 by 12:00—a clear signal for sun safety! As the afternoon progresses, the intensity begins to taper off, dropping to 8 at 14:00 and further descending to 2 by 16:00. The day concludes with minimal UV presence, registering 0 after 18:00. It's a compelling reminder of the sun's powerful influence during midday—plan accordingly!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 8 | very high | 15 min |
| 10:00 | 11 | extreme | 10 min |
| 11:00 | 14 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index remains at an extreme level, with values consistently ranging from 13 to 17. Notably, the high-risk months for UV exposure are from January to April, where the UV Index peaks at 16-17 and requires a rapid burn time of just 10 minutes. The UV Index then gradually decreases, but remains significant through to November, only dropping to 13 in December. Given these consistently high UV levels, it is crucial for both visitors and residents to practice effective sun safety, including wearing protective clothing, using broad-spectrum sunscreen, and seeking shade during peak sunlight hours to mitigate the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Surabaya UVI | 13 | 15 | 14 | 12 | 12 | 10 | 11 | 12 | 14 | 13 | 13 | 13 |
| Bekasi UVI | 14 | 16 | 16 | 14 | 11 | 10 | 10 | 11 | 13 | 15 | 14 | 13 |
| Jakarta UVI | 14 | 16 | 16 | 14 | 11 | 10 | 10 | 11 | 13 | 15 | 14 | 13 |
| Medan UVI | 13 | 15 | 15 | 15 | 14 | 12 | 12 | 13 | 14 | 14 | 13 | 12 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |
| Tomohon | 15 | 16 | 17 | 16 | 14 | 13 | 13 | 14 | 15 | 15 | 14 | 13 |