Last updated: June 2, 2025
In Ailuk, Marshall Islands, awareness of the UV Index is crucial for safeguarding your skin health under the tropical sun. The UV Index serves as a daily reminder of the sun's intensity, guiding residents and visitors alike in taking preventive measures against sunburn and long-term skin damage. With a typical climate characterized by warm temperatures and high UV exposure—especially around noon when levels reach a peak of 13—understanding these levels can help you enjoy outdoor activities safely. Whether you're lounging on the beach or exploring the lush landscapes, keeping an eye on the UV Index can make all the difference in maintaining your well-being under Ailuk's bright sun.
Today’s UV Index offers a dynamic snapshot of sun intensity throughout the day. Starting off gently, we see a maximum of 1 at 7:00 AM, gradually climbing to a moderate 2 by 8:00 AM. The sun’s power peaks at 12:00 PM with a daring 13, hitting the day's highest UV threats between 11:00 and 13:00, so make sure to protect your skin during that window! As the sun begins to descend, the index decreases, falling to 8 at 3:00 PM, then tapering off to a mild 1 by 6:00 PM. Finally, as daylight fades, the UV Index drops to 0 at 7:00 PM, marking the end of a sun-soaked day. Stay safe in the sun, and don’t forget your sunscreen during those 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 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index remains consistently high, signaling a seasonal trend of extreme UV exposure. Notably, March to September marks the period with the highest UV levels, peaking at 15 in March and April. Consequently, the high-risk months for sun exposure are January through September when the UV Index often reaches values that fall into the extreme category, with a burn time as short as 10 minutes. Visitors and residents are strongly advised to take precautions during these months, which include wearing protective clothing, utilizing broad-spectrum sunscreen, and seeking shade whenever possible. As the year progresses into October and November, the UV Index does decrease slightly, but caution is still warranted as the levels remain in the very high to high range.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ailuk | 12 | 14 | 15 | 15 | 14 | 13 | 13 | 14 | 14 | 13 | 11 | 10 |
| Wotje UVI | 12 | 14 | 15 | 15 | 14 | 13 | 13 | 14 | 14 | 13 | 11 | 10 |
| Ebaye UVI | 12 | 14 | 16 | 16 | 14 | 13 | 13 | 15 | 14 | 13 | 12 | 11 |
| Arno UVI | 13 | 14 | 16 | 16 | 15 | 13 | 13 | 14 | 14 | 13 | 12 | 11 |
| Majuro UVI | 13 | 14 | 16 | 16 | 15 | 13 | 13 | 14 | 14 | 13 | 12 | 11 |
| Jabor UVI | 13 | 15 | 16 | 16 | 14 | 13 | 14 | 14 | 14 | 13 | 12 | 11 |