Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of An Nasirah, Yemen, where the intense BWk climate often leads to high levels of sun exposure. With UV readings peaking at 13 around midday, awareness of these levels is essential for preventing sunburn and protecting skin health. By grasping how UV radiation fluctuates throughout the day—from a mild index of 1 in the early morning to alarming levels in the late morning and early afternoon—locals can take essential precautions to enjoy the sun while safeguarding their skin against harmful effects.
The UV Index throughout the day presents a clear picture of sun intensity, peaking sharply at 12:00 PM with a noteworthy index of 13, signaling a strong need for sun protection during this period. As the sun rises, the index climbs from a mere 1 at 7:00 AM to an alerting 10 by 10:00 AM. The intensity remains high until 1:00 PM, when it drops slightly to 11 and gradually descends to 5 by 3:00 PM. After this peak, the UV Index decreases swiftly, with levels returning to 3 by 4:00 PM, and sinking to 1 by 5:00 PM, indicating a decline in sun exposure as the day winds down. By the evening hours, the index falls to 0, making it a safe time for outdoor activities, free from UV concerns.
| 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 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 5 | moderate | 30 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 |
During the year, the UV Index exhibits significant seasonal variations, particularly peaking from February to September, where the index ranges from 12 to 14, indicating an extreme exposure category with a maximum burn time of just 10 minutes. The highest UV ratings occur in March and April with a UV Index of 14, making these months particularly hazardous for sun exposure. The high-risk months are therefore February through September, where individuals should take extra precautions to protect their skin. It is advisable for both visitors and residents to seek shade, wear protective clothing, and apply broad-spectrum sunscreen frequently during these months to minimize the risk of UV-related health issues. As the year progresses into October to December, the UV Index drops to levels categorized as very high, particularly in November and January, where longer burn times of 15 minutes are noted. Staying vigilant about sun protection year-round is crucial for maintaining skin health.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Al Hudaydah UVI | 9 | 10 | 11 | 13 | 12 | 10 | 9 | 9 | 9 | 9 | 8 | 8 |
| Aden UVI | 10 | 11 | 13 | 14 | 13 | 10 | 11 | 12 | 10 | 10 | 9 | 9 |
| An Nasirah | 10 | 12 | 14 | 14 | 13 | 12 | 11 | 11 | 12 | 11 | 10 | 9 |
| Taiz UVI | 10 | 12 | 13 | 14 | 13 | 10 | 12 | 12 | 11 | 11 | 10 | 9 |
| Mukalla UVI | 11 | 12 | 13 | 14 | 14 | 12 | 12 | 12 | 12 | 11 | 10 | 9 |
| Sanaa UVI | 12 | 13 | 15 | 16 | 15 | 14 | 13 | 13 | 14 | 13 | 11 | 10 |