Last updated: June 2, 2025
In Sardinal, Costa Rica, understanding the UV Index is crucial for safeguarding your skin health and preventing sunburn. With the tropical Aw climate, residents and visitors alike experience intense UV exposure throughout the day, peaking at a staggering index of 14 around noon. Being aware of these UV levels helps you take necessary precautions, ensuring enjoyable outdoor activities without the risk of damaging your skin. Stay informed and protect yourself against harmful rays as you bask in the vibrant beauty of Sardinal's sunny environment!
As the sun rises, the UV Index begins its ascent, starting at a mild 2 by 7:00 AM. By 8:00 AM, it climbs to 5, preparing for a significant increase. The peak of the day arrives between 11:00 AM and 12:00 PM, reaching a sizzling 13 and then an intense 14—a reminder of the midday sun's power. As the afternoon progresses, the index starts to slide, dropping to 12 at 1:00 PM and gently descending to 9 by 2:00 PM. By late afternoon, at 3:00 PM, it falls to 5, then tapers off further to 2 by 4:00 PM and sinks to 1 by 5:00 PM. Finally, as the sun sets, the UV Index dwindles to 0 after 6:00 PM, marking the end of another day under the sun. Stay protected during the peak hours!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 2 | low | 45 min |
08:00 | 5 | moderate | 30 min |
09:00 | 8 | very high | 15 min |
10:00 | 11 | extreme | 10 min |
11:00 | 13 | extreme | 10 min |
12:00 | 14 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 9 | very high | 15 min |
15:00 | 5 | moderate | 30 min |
16:00 | 2 | low | 45 min |
17:00 | 1 | low | 45 min |
18:00 | 0 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index data reveals significant seasonal variations in ultraviolet radiation exposure, with the highest risk occurring from March through August, when the UV Index consistently reaches 14, categorized as extreme with a burn time of just 10 minutes. February sees a peak UV Index of 13, while September through November gradually taper to 11 and 10 respectively, though still in the extreme and very high categories. Visitors and residents should take precautionary measures during these high-risk months, including applying sunscreen, wearing protective clothing, and seeking shade to minimize the risk of skin damage. Even in the months of reduced intensity, such as December, vigilance is advised to protect against prolonged sun exposure.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Sardinal | 11 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 11 | 10 |
Limon UVI | 12 | 13 | 14 | 15 | 14 | 13 | 13 | 13 | 13 | 14 | 11 | 10 |
Liberia UVI | 11 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 11 | 10 |
Alajuela UVI | 12 | 13 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 14 | 12 | 10 |
San Jose UVI | 12 | 14 | 15 | 16 | 14 | 14 | 14 | 14 | 14 | 15 | 12 | 11 |
Paraiso UVI | 13 | 14 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 15 | 12 | 11 |