Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Rajmahal, India, where the climate can be characterized as Cwa—a humid subtropical environment that brings significant sun exposure. The UV Index informs us about the strength of ultraviolet radiation, helping us take important precautions to prevent sunburn and protect our skin health. With peak UV levels soaring to 11 around midday, it’s essential to be aware of these risks and take protective measures against harmful rays that can lead to long-term skin damage. Keep an eye on the UV Index to ensure safe outdoor activities, especially during the sunniest hours of the day!
As the sun rises and warms the day, the UV Index steadily climbs, peaking with intensity around 11:00 AM at a robust 11. Early morning starts off mild with a UV Index of 3 at 7:00 AM, but by 10:00 AM, it spikes to a significant 10, signaling the need for sun protection. The afternoon heat keeps the UV levels high, tapering slightly to 8 by 1:00 PM and dipping to 5 by 2:00 PM. As the sun begins its descent, the UV Index steadily declines, dropping to a mere 1 by 4:00 PM, and fading to 0 as evening falls, reminding us to stay vigilant during those peak sunlight hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 6 | high | 25 min |
| 09:00 | 8 | very high | 15 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
As the year progresses, the UV Index experiences significant fluctuations, peaking during the summer months. From January to March, the UV levels rise gradually, moving from a moderate index of 5 to a very high 8. This trend continues through April and May, where monthly indexes remain very high at 10 and 9 respectively. The months of June, July, and August are the most critical, with UV levels soaring to extreme indexes of 11 and 13, necessitating quick action, as burn times shorten to just 10 minutes. The fall season ushers in a decline, yet September and October still exhibit extreme to very high levels, with a burn time of 10 to 15 minutes. As a result, both visitors and residents should exercise increased caution during the high-risk months of March to October, prioritizing sun protection measures such as sunscreen, hats, and protective clothing to minimize the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Delhi UVI | 5 | 6 | 9 | 10 | 10 | 10 | 12 | 12 | 9 | 8 | 5 | 5 |
| Rajmahal | 5 | 6 | 8 | 10 | 9 | 11 | 13 | 12 | 12 | 9 | 6 | 5 |
| Mumbai UVI | 8 | 9 | 10 | 11 | 11 | 12 | 13 | 13 | 11 | 10 | 7 | 7 |
| Ahmedabad UVI | 7 | 8 | 10 | 12 | 11 | 12 | 13 | 13 | 11 | 10 | 7 | 6 |
| Hyderabad UVI | 10 | 11 | 12 | 11 | 13 | 13 | 15 | 14 | 13 | 11 | 8 | 8 |
| Bengaluru UVI | 11 | 13 | 13 | 14 | 13 | 14 | 14 | 14 | 14 | 12 | 11 | 10 |