Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Onitsha, Nigeria, where the climate offers abundant sunshine but also brings significant UV exposure risks. With levels peaking at a harmful 11 during midday, being aware of these ratings can help prevent sunburn and long-term skin health issues. In this vibrant city, where the tropical climate means spending time outdoors is common, knowing when UV levels are at their highest empowers you to protect your skin effectively and enjoy the sun safely. Stay informed and safeguard your health by checking the UV Index regularly!
The UV Index for today paints a vivid picture of sun intensity throughout the hours. Starting at a gentle 1 by 07:00, the sun's influence grows stronger, peaking at 11 between noon and 13:00—an optimal time for sun safety practices. As the day progresses, the intensity gradually wanes, dropping to 7 by 15:00, before tapering off to 2 at 17:00 and finally fading to 0 by 19:00. With this data, it's clear: from 10:00 to 15:00, the sun is at its most potent, reminding us to stay protected while enjoying the outdoors!
| 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 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV Index levels exhibit significant seasonal changes, with January and February marking the beginning of high-risk months as the UV Index peaks at 11 and 10, respectively. The danger escalates as March through September experience consistently high values between 11 and 13, categorized as extreme, which results in a burn time as short as 10 minutes. October also maintains a high UV Index of 12 before dipping to 9 in November and December, where the exposure category shifts back to very high. Residents and visitors are advised to take precautions during these high-risk months by wearing protective clothing, seeking shade, and applying sunscreen frequently to mitigate the risk of skin damage from ultraviolet radiation.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lagos UVI | 10 | 10 | 11 | 13 | 12 | 11 | 11 | 11 | 12 | 11 | 9 | 8 |
| Port Harcourt UVI | 10 | 11 | 11 | 14 | 12 | 11 | 11 | 11 | 12 | 12 | 10 | 9 |
| Onitsha | 10 | 11 | 11 | 13 | 12 | 11 | 12 | 11 | 12 | 12 | 9 | 9 |
| Ibadan UVI | 10 | 11 | 12 | 14 | 12 | 12 | 12 | 12 | 13 | 11 | 9 | 9 |
| Kano UVI | 10 | 12 | 13 | 11 | 11 | 11 | 12 | 13 | 12 | 11 | 10 | 10 |
| Kaduna UVI | 10 | 12 | 12 | 12 | 11 | 12 | 13 | 13 | 13 | 11 | 10 | 10 |