Last updated: June 2, 2025
Understanding the UV Index in Simpasai, Indonesia is crucial for maintaining skin health and preventing sunburn. With a tropical climate that brings strong sun exposure, residents and visitors need to be aware of daily UV levels, especially when they reach a maximum of 10 during midday hours. This significant intensity underscores the importance of taking protective measures, such as wearing sunscreen and seeking shade, to avoid harmful effects on skin health. As the sun rises, the UV Index rises quickly, peaking between 10 AM and 1 PM, making it essential to stay informed about these levels to enjoy safe outdoor activities in beautiful Simpasai.
As the day unfolds, the UV Index experiences a notable rise, peaking at a maximum of 10 between 11:00 AM and 12:00 PM, indicating a high risk of harm from unprotected sun exposure. Early morning rays see the index start modestly at 1 at 07:00, gradually climbing to 4 by 09:00. The sun reaches its zenith at noon, prompting a cautious approach to outdoor activities. From 1:00 PM, the index begins a gradual decline, tapering to 4 by 3:00 PM, and reverting to safer levels below 2 by 4:00 PM. As daylight wanes, the index drops to 0 after 6:00 PM, signaling that the sun's intensity has fully subsided. Remember to stay sun-safe 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 | 10 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 4 | 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 |
The UV Index data reveals significant seasonal variations, with extremely high levels persisting from January through April and again in July, August, September, October, and November. The months of January through April consistently show UV Index values between 15 and 16, indicating an exposure category of extreme, with a rapid burn time of just 10 minutes. In May, the index slightly drops to 12, but it remains in the extreme category until June, when it falls to a very high level of 10. Visitors and residents should be particularly cautious during the high-risk months of January, February, March, April, July, August, September, October, and November, all classified as extreme exposure months. To protect against skin damage, it is imperative to apply sunscreen, wear protective clothing, and limit sun exposure, especially during midday hours.
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 |
| Simpasai | 15 | 16 | 16 | 15 | 12 | 10 | 12 | 13 | 15 | 15 | 15 | 15 |