Last updated: August 1, 2025
Understanding the UV Index in Goroka, Papua New Guinea is essential for safeguarding your skin against harmful ultraviolet rays. With the tropical climate characteristic of the region, Goroka experiences varying UV levels throughout the day, peaking at an intense 11-13 from late morning to early afternoon. Being aware of these fluctuations is crucial in preventing sunburn and promoting long-term skin health. By staying informed about the UV Index, you can enjoy the beautiful outdoors while taking the necessary precautions to shield yourself from overexposure. Remember, even on cloudy days, UV rays can still pose a risk, making this awareness all the more important.
At dawn, the UV Index starts gently at 1 around 07:00, gradually climbing to 2 by 08:00. The real action begins at 09:00, where it spikes to 4, setting the stage for a brilliant morning. By 10:00, the intensity escalates to 8, and just after 11:00, it peaks at a striking 11. Lunchtime sees the UV Index soar to a blazing 13 at 12:00, staying strong at 12 until 13:00. The afternoon brings a gradual decline, dropping to 10 by 14:00 and then to 6 at 15:00. As the sun begins its descent, the UV levels ease to 3 at 16:00, returning to 1 by 17:00, and then lingering at 1 until twilight at 18:00. Finally, as night falls by 19:00, the UV Index fades to a peaceful 0, signaling the end of a vibrant day under the sun.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 15 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV Index levels remain consistently extreme, with values ranging from 12 to 18. The months of January through April consistently display the highest UV levels, making February and March the most critical months, with a peak UV Index of 18. Residents and visitors during these high-risk months should take necessary precautions, such as wearing sunscreen, protective clothing, and sunglasses, while also seeking shade whenever possible. It is vital to remember that even during the milder months, such as June through November with UV Index values between 12 and 16, the potential for skin damage remains significant; thus, protective measures should be maintained year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Port Moresby UVI | 15 | 16 | 16 | 15 | 12 | 10 | 11 | 13 | 15 | 15 | 14 | 15 |
| Arawa UVI | 15 | 16 | 17 | 16 | 13 | 11 | 11 | 13 | 15 | 15 | 15 | 14 |
| Popondetta UVI | 16 | 16 | 16 | 15 | 13 | 11 | 12 | 14 | 15 | 16 | 15 | 15 |
| Lae UVI | 15 | 17 | 17 | 16 | 13 | 11 | 12 | 14 | 15 | 15 | 15 | 14 |
| Goroka | 16 | 18 | 18 | 17 | 14 | 12 | 13 | 15 | 16 | 16 | 15 | 15 |
| Mount Hagen UVI | 16 | 17 | 18 | 17 | 14 | 12 | 13 | 14 | 16 | 16 | 15 | 16 |