Last updated: January 18, 2026
Understanding the UV Index is crucial for residents and visitors in Tenga, Indonesia, where the tropical climate brings both beauty and significant sun exposure risks. Sunburn prevention and maintaining skin health rely heavily on awareness of UV levels, especially during peak hours when the index can reach as high as 13 between noon and early afternoon. With Tenga's typical afternoon sunshine, understanding these levels can help you enjoy the outdoors while protecting your skin from potential harm. Stay informed and sun-smart to fully embrace the vibrant life in this beautiful region!
The UV Index data reveals a dramatic transformation throughout the day. Early in the morning, at 07:00, the UV Index starts at a minimal 1, but by 09:00, it skyrockets to 7, indicating a rise in sun intensity. The peak occurs between 11:00 and 12:00, where it reaches its zenith at an impressive 13, showcasing the potential for skin damage without protection. As the afternoon progresses, the index gradually declines, with values dropping to 4 by 15:00 and further dwindling to a 0 by 19:00. This pattern highlights the importance of sun safety during the midday hours when UV radiation is most potent, urging us to embrace the shade and apply sunscreen accordingly.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 60+ minutes |
| 08:00 | 4 | moderate | 30–60 min |
| 09:00 | 7 | high | 15–30 min |
| 10:00 | 11 | extreme | <10 minutes |
| 11:00 | 14 | extreme | <10 minutes |
| 12:00 | 15 | extreme | <10 minutes |
| 13:00 | 13 | extreme | <10 minutes |
| 14:00 | 10 | very high | 10–15 min |
| 15:00 | 6 | high | 15–30 min |
| 16:00 | 2 | low | 60+ minutes |
| 17:00 | 1 | low | 60+ minutes |
| 18:00 | 0 | low | 60+ minutes |
| 19:00 | 0 | low | 60+ minutes |
The UV Index data indicates that residents and visitors experience extremely high levels of UV exposure throughout the year, with the highest values occurring from January to March, peaking at a UV Index of 17 in March. February slightly follows with a UV Index of 16. While April and May see a slightly lower index of 16 and 14 respectively, these months, along with June (UV Index 12) and July (UV Index 13), remain critical in terms of potential sunburn risk, as all months listed carry the same burn time of just 10 minutes. October through December shows a slight decrease in UV index values but still maintains a high exposure risk. Therefore, to safeguard against UV damage, it is crucial for everyone to wear sunscreen, protective clothing, and seek shade, especially during peak hours, regardless of the month.
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 |
| Tenga | 15 | 16 | 17 | 16 | 14 | 12 | 13 | 14 | 14 | 15 | 14 | 13 |