Last updated: June 2, 2025
In the sunny town of Basa, Indonesia, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. With a climate characterized by persistent warmth, basking in the tropical sun can be both delightful and risky. Awareness of UV levels helps residents and visitors alike take necessary precautions against harmful radiation, especially during peak hours when the index soars to 10 around noon. By staying informed about daily UV fluctuations, you can enjoy Basa's beautiful outdoors while safeguarding your skin effectively.
The UV Index for the day reveals a significant fluctuation in intensity, peaking at 10 during the midday hours (12:00 PM and 1:00 PM), indicating a high risk of harm from unprotected sun exposure. Early risers will find the sun’s rays quite mild at 1 and 2 between 7:00 AM and 9:00 AM. However, as the morning progresses, the UV intensity surges to 7 by 10:00 AM and reaches its zenith with a strong 9 at 11:00 AM. After the peak, the levels gradually decline, dropping to 5 by 3:00 PM, and diminishing to 1 by 5:00 PM, with the evening bringing a return to safety as it falls to 0 by 7:00 PM. Remember to protect your skin during the peak hours, especially between 11:00 AM and 1:00 PM!
| 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 | 9 | 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 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index shows significant seasonal changes, with extreme levels persisting from January through November, peaking at 16 in both February and March. The high-risk months for UV exposure include January, February, March, and July to November, where the burn time is as little as 10 minutes. While June has a slightly lower UV Index of 10 (very high), the risk remains critical throughout the year, making it essential for both visitors and residents to take precautions. It is advisable to wear protective clothing, apply high-SPF sunscreen, and limit sun exposure, especially during midday hours, to reduce 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 |
| Basa | 15 | 16 | 16 | 14 | 12 | 10 | 11 | 13 | 15 | 15 | 14 | 15 |