Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Khasan, Russian Federation, where the sun can be both a friend and a foe. With typical UV levels reaching their peak at 11:00 AM and 1:00 PM, awareness of these levels is vital for effective sunburn prevention and maintaining skin health. The region's humid continental climate (Dwa) brings distinct seasonal variations, yet during the summer months, high UV exposure can pose significant risks. Stay informed and protect yourself from harmful rays by regularly checking the UV Index, especially during those peak hours when the sun's intensity is at its highest.
From dawn to dusk, the UV Index climbs steadily, peaking in the early afternoon. At 07:00, the index starts low at 1, signaling a gentle sun. By 09:00, it reaches 3, offering a hint of caution. The real escalation begins around 10:00, where it surges to 5, and by 11:00, it's hitting 7—a clear reminder that sun protection is becoming crucial. At 12:00, the sun is at its strongest, with a blistering 10, and just an hour later, it peaks at a staggering 11. The day starts to cool down after this intensity, dropping to 10 at 14:00, then tapering off to 9 at 15:00. As the sun sets, the index gradually decreases, settling back to 2 by 18:00, and finally returning to 1 at 19:00, signaling a gentle close to a sun-drenched day. 🌞
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, indicating varying levels of sun exposure risk. From January (UV Index 2, low exposure) to February (UV Index 3, moderate exposure), there is a gradual increase in UV intensity. However, a sharp rise can be observed starting in April (UV Index 7, high exposure) peaking during the summer months of June and July (UV Index 10, very high), followed by an extreme level in August (UV Index 11, extreme). The high-risk months for sunburn are April through September, where burn times decrease to as little as 10 minutes in August. Residents and visitors are advised to take precautions during these months, including seeking shade, wearing protective clothing, and using sunscreen with a high SPF, especially during midday hours. As fall approaches, the UV Index drops again, providing some relief with moderate levels in October and November before returning to low levels in December.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Saint Petersburg UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Nizhniy Novgorod UVI | 1 | 2 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 1 | 1 |
| Yekaterinburg UVI | 1 | 2 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 1 | 1 |
| Moscow UVI | 1 | 2 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 2 | 1 |
| Novosibirsk UVI | 1 | 2 | 4 | 5 | 7 | 7 | 6 | 6 | 5 | 3 | 1 | 1 |
| Khasan | 2 | 3 | 5 | 7 | 8 | 10 | 10 | 11 | 8 | 5 | 3 | 2 |