Last updated: July 2, 2025
In Natal, Indonesia, awareness of the UV Index is crucial for ensuring skin health and preventing sunburn. With the tropical climate providing abundant sunshine, understanding the daily UV levels helps residents and visitors alike make informed choices about sun protection. As the UV Index peaks at 12 between noon and early afternoon, this indicates a very high risk of harm from unprotected sun exposure. Staying aware of these levels can aid in minimizing risks and promoting healthier skin in this beautiful coastal region.
As the day unfolds, the UV Index dramatically rises, peaking at a maximum of 12 around noon. At 07:00, the morning sun barely registers with a low of 1, but by 09:00 the intensity increases to 4, signaling the need for some sun protection. The heat intensifies further, with the index soaring to 11 by 11:00 and staying at a blistering 12 between 12:00 and 13:00. After this peak, a gradual decline begins: at 14:00, it drops to 10, and by 15:00 it cools off to 7. The late afternoon brings a further decrease, with the UV levels falling to 4 by 16:00 and tapering off to 1 by 17:00. As the sun sets, the index finally reaches 0 by 19:00, marking the end of its strong impact for the day. Remember to stay protected during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index shows extreme levels throughout the year, with January to April recording the highest values at 15-16, indicating a very high risk of harm from unprotected sun exposure, and a burn time as short as 10 minutes. March is the peak month, reaching 16. May and August see a slight reduction to 14, while June and July dip to 12, before climbing back to 15 in September. For October and November, the index remains at 14, with a slight decrease to 13 in December. Given these high UV levels, it is crucial for residents and visitors to take protective measures, such as wearing broad-spectrum sunscreen, protective clothing, and seeking shade, especially during peak sun hours. Remember, protection is necessary year-round, but especially crucial from January to April and September to November when UV exposure is particularly high.
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 |
| Natal | 15 | 15 | 16 | 16 | 14 | 12 | 12 | 14 | 15 | 14 | 14 | 13 |