Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Siraha, Nepal, where the region's Cwa climate brings both vibrant sunshine and potential skin risks. With UV levels peaking at 12 around midday, awareness of these levels becomes paramount in preventing sunburn and promoting long-term skin health. By familiarizing yourself with daily UV fluctuations—from a moderate 3 at sunrise to a startling 11 by noon—you can take proactive measures against harmful exposure, ensuring safety for yourself and your loved ones as you enjoy the great outdoors.
The UV Index today shows a striking ascent from the early morning hours, peaking at a maximum of 12 around 11:00 AM. Starting with a moderate 3 at 7:00 AM, the index jumps to 5 by 8:00 AM, then escalates rapidly, reaching a significant 11 at noon. The sun’s rays are most potent between 10:00 AM and noon, so it’s crucial to take precautions during this time. As the day progresses, the index reflects a downward trend, tapering off to 4 by 3:00 PM, and further declining to 0 after 6:00 PM. Early risers and midday adventurers should remain vigilant of the sun’s intensity, especially when the UV levels soar. Enjoy the daylight, but don't forget your sun protection!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 8 | very high | 15 min |
| 10:00 | 11 | extreme | 10 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 6 | 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 |
Throughout the year, the UV Index displays significant seasonal variations, with high-risk months primarily occurring from March to September. During these months, the UV Index reaches levels classified as very high to extreme, with peak values of 13 in July and 12 from June to September. Consequently, during these times, the recommended burn time drastically decreases, ranging from 10 minutes in the most intense periods to 15 minutes in late autumn. Visitors and residents are advised to take necessary precautions, such as wearing sunscreen, protective clothing, and wide-brimmed hats, particularly during midday hours when UV radiation is strongest. Awareness and proactive measures can help prevent skin damage and associated health risks throughout the year.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Biratnagar UVI | 5 | 6 | 8 | 9 | 10 | 11 | 13 | 12 | 12 | 9 | 7 | 5 |
| Birganj UVI | 5 | 6 | 8 | 10 | 10 | 12 | 13 | 12 | 11 | 9 | 7 | 5 |
| Siraha | 5 | 6 | 8 | 10 | 10 | 12 | 13 | 12 | 12 | 9 | 7 | 5 |
| Patan UVI | 5 | 7 | 9 | 11 | 11 | 13 | 14 | 13 | 12 | 10 | 7 | 5 |
| Kathmandu UVI | 5 | 7 | 9 | 11 | 11 | 13 | 14 | 13 | 12 | 10 | 7 | 5 |
| Pokhara UVI | 7 | 9 | 12 | 13 | 14 | 15 | 15 | 15 | 14 | 12 | 8 | 6 |