Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Nana Glen, Australia, where the subtropical climate can lead to significant sun exposure. Awareness of UV levels is important for preventing sunburn and protecting skin health, especially during the peak hours when the index can reach level 5 around noon. Given Nana Glen's climate zone (Cfa), which offers warm summers, it’s vital to stay informed about UV risks to safeguard against potential long-term skin damage. By keeping an eye on the UV Index, you can enjoy the beautiful outdoors while minimizing the health risks that come with exposure to the sun.
The UV Index throughout the day follows a distinct pattern, with the intensity peaking at 12:00 PM when it reaches a noteworthy level of 5. Morning hours start off mild, with values of 1 at 07:00 and 08:00, gradually escalating to 2 by 09:00, then climbing to 4 at 11:00. Post-noon, the index slightly decreases, falling to 4 again at 13:00, before tapering off to 2 by 15:00. As the day winds down, the levels drop significantly, plunging to 0 by 19:00. This highlights the importance of sun protection during the midday hours when UV radiation is at its strongest.
| 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 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 4 | moderate | 30 min |
| 14:00 | 3 | moderate | 30 min |
| 15:00 | 2 | low | 45 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 |
The UV Index experiences significant fluctuations throughout the year, with the highest levels occurring from January to March where values reach 15, marking an extreme exposure category with a burn time of only 10 minutes. Following this, the UV Index drops to 9 in April and then moderately decreases to 6 in May, transitioning from an extreme to a high concentration. As summer arrives, the index fluctuates between 4 to 7, categorized as moderate to high with burn times extending to 30 minutes in June and 25 minutes in August. Clearly, the high-risk months for UV exposure are January through March, followed by October and November when the index rises again to 13 and 15, respectively. To ensure safety, both visitors and residents are advised to take precautions such as wearing sunscreen, protective clothing, and sunglasses, especially during these peak months when the risk of sunburn is significant.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melbourne UVI | 14 | 12 | 11 | 7 | 4 | 3 | 3 | 5 | 7 | 9 | 12 | 14 |
| Adelaide UVI | 14 | 13 | 12 | 8 | 5 | 3 | 4 | 5 | 7 | 10 | 12 | 15 |
| Sydney UVI | 14 | 13 | 11 | 8 | 5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 |
| Perth UVI | 14 | 14 | 11 | 9 | 6 | 4 | 4 | 6 | 8 | 11 | 13 | 14 |
| Nana Glen | 15 | 15 | 14 | 9 | 6 | 4 | 5 | 7 | 9 | 11 | 13 | 15 |
| Brisbane UVI | 15 | 15 | 13 | 10 | 7 | 5 | 5 | 8 | 9 | 12 | 14 | 15 |