Last updated: May 3, 2025
In Castletroy, Ireland, staying informed about the UV Index is crucial for safeguarding your skin health. Understanding UV levels helps prevent sunburn and long-term skin damage, making it essential for both locals and visitors to stay vigilant. With a Cfb climate, Castletroy experiences moderate sunshine, but the afternoon peaks in UV readings—reaching up to 7 around midday—pose significant exposure risks. Being aware of these levels empowers you to enjoy the outdoors while protecting yourself from the sun's harmful rays.
As the day unfolds, the UV Index begins to soar, peaking at 7 between 1 PM and 2 PM. The morning starts off gently, with a low index of 1 at 7 AM and 8 AM, gradually climbing to 2 by 9 AM. By 10 AM, the intensity increases to 4, reaching 5 at 11 AM. The sun is at its strongest at 12 PM, with a UV index of 6, before hitting its maximum of 7 during the early afternoon hours. As the day progresses, the index begins to decline, dropping back to 6 at 3 PM, then tapering off to 5 at 4 PM. By 5 PM, it continues to fall to 3, and as evening approaches, it settles at 2 at 6 PM, finally winding down to 1 by 7 PM. It's a perfect reminder to stay protected under the sun, especially during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV Index values fluctuate significantly, indicating varying levels of sun exposure risk. The high-risk months are from May to August, where the UV Index reaches its peak at 7-8, classifying them as high to very high exposure. Specifically, June and July present the greatest risk, with a burn time of only 15 minutes. In contrast, the winter months (January, February, November, and December) show a low exposure category with UV Index values of 1-2, allowing for longer safe sun exposure (up to 45 minutes). To ensure safety, it is advisable for visitors and residents to take protective measures during the high UV months, such as wearing sunscreen, protective clothing, and seeking shade, especially during midday hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gaillimh UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Tallaght UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Dublin UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Castletroy | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
| Luimneach UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
| Cork UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |