Last updated: May 3, 2025
In the tropical climate of Rantau Prapat, Indonesia, awareness of the UV Index is crucial for protecting your skin from harmful ultraviolet radiation. With peak UV levels soaring to 14 between midday and early afternoon, understanding these levels can significantly aid in sunburn prevention and overall skin health. By monitoring UV exposure, residents can take timely precautions against the sun's intensity, ensuring safety during outdoor activities. As Rantau Prapat enjoys abundant sunshine year-round, getting to know the daily UV Index is key to enjoying the sun responsibly.
The UV Index throughout the day showcases a dramatic rise and fall, reflecting the sun's intensity and its impact on outdoor activities. Starting the morning at a modest 1 at 07:00, the index quickly escalates as the sun ascends, peaking at an impressive 14 around noon. This peak indicates a high risk of harm from unprotected sun exposure, making protective measures essential during these hours. As afternoon approaches, the UV index gradually declines, dipping to 7 by 15:00, then falling back to 1 by 17:00. The day winds down to a UV level of 0 by 19:00, marking a safe time for evening strolls without sun concerns. Remember, it's crucial to stay sun-safe during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, there are significant seasonal changes in UV exposure, with the highest UV indices occurring from March to September. During these months, particularly March (15), April (15), and September (15), the UV Index reaches its peak, categorized as extreme, and a mere 10 minutes of sun exposure can lead to skin burns. Residents and visitors should be particularly cautious during these high-risk months and take protective measures, such as wearing sunscreen, protective clothing, and sunglasses, while seeking shade during peak sunlight hours. Even in the cooler months, such as January and February, where the UV Index remains high at 13-14, individuals should not become complacent and should continue to prioritize sun safety year-round.
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 |
| Rantau Prapat | 13 | 14 | 15 | 15 | 14 | 12 | 12 | 14 | 15 | 14 | 13 | 12 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |