Last updated: July 2, 2025
In Arari, Brazil, understanding the UV Index is crucial for safeguarding your skin against harmful ultraviolet rays. With a tropical climate (Aw), the sun's intensity can be particularly high, especially during peak hours. Knowing the UV levels helps in preventing sunburn and protecting overall skin health, ensuring that outdoor activities can be enjoyed safely. During midday, for instance, the index can soar to a staggering 11, indicating very high exposure, while even the morning hours can reach a UV level of 5. So, staying informed about the UV Index not only promotes a healthier lifestyle but also empowers you to make safe sun safety choices in Arari's vibrant environment.
The UV Index begins its ascent at 07:00 with a low reading of 1, gradually rising to 2 by 08:00. As the day progresses, the intensity of UV radiation peaks at 12:00, hitting a maximum of 11—a critical level where sun protection is essential. Following this zenith, the index starts to decline, measuring 10 at 13:00, then tapering off to 8 by 14:00. By mid-afternoon, the UV Index drops to 5 at 15:00 and continues its downward trajectory, reaching 2 at 16:00. As the sun sets, the UV index decreases to 1 by 17:00 and ultimately settles at 0 by 18:00, signifying the end of significant UV exposure for the day. It's a reminder that while the sun's rays can be intense at midday, the morning and late afternoon offer safer conditions for outdoor activities.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 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 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index data reveals that January through April presents the highest risk for sun exposure, with UV Index values peaking at 16 in March. Throughout the year, the UV Index remains alarmingly high, categorized as extreme, with consistent maximum burn times of just 10 minutes. This necessitates that both residents and visitors take strict precautions, especially during the high-risk months of January to April, when sun exposure is most detrimental. To safeguard against harmful UV radiation, it is crucial to wear protective clothing, apply broad-spectrum sunscreen, and seek shade during peak sun hours. Even in the latter months of the year, UV levels remain significant, underscoring the need for continued sun safety awareness.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rio de Janeiro UVI | 15 | 14 | 13 | 10 | 7 | 6 | 7 | 9 | 11 | 12 | 13 | 15 |
| Sao Paulo UVI | 16 | 15 | 12 | 11 | 8 | 6 | 7 | 9 | 11 | 13 | 14 | 15 |
| Belo Horizonte UVI | 17 | 16 | 14 | 12 | 9 | 7 | 8 | 10 | 12 | 13 | 14 | 16 |
| Salvador UVI | 14 | 14 | 14 | 13 | 10 | 9 | 9 | 12 | 12 | 15 | 15 | 14 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |
| Arari | 15 | 14 | 16 | 15 | 13 | 11 | 11 | 13 | 13 | 13 | 13 | 13 |