Last updated: June 2, 2025
Understanding the UV Index in Siquirres, Costa Rica is crucial for protecting yourself under the tropical sun. With UV levels often peaking between 10 AM and 2 PM, awareness can be the difference between enjoying your outdoor activities and facing painful sunburns or long-term skin damage. Siquirres, characterized by its tropical climate, presents unique challenges as UV rays can be intense, reaching values as high as 14 during midday. By staying informed about UV levels, you can make smarter choices to safeguard your skin and enjoy all the beauty this vibrant region has to offer.
As the sun rises, so does the UV Index, peaking at 14 between 11:00 AM and 12:00 PM—a time when sun protection is crucial. The day starts gently at 07:00 with a low index of 2, gradually climbing to a moderate 5 by 08:00. By 09:00, it hits 9, signaling the approach of midday's intense rays. The highest intensity follows, peaking at 12:00 PM, where the UV Index remains steady at 14. After the zenith of noon, the UV levels begin their decline; by 03:00 PM, it drops to 5 before plummeting in the evening. As the sun sets, the UV Index cools off significantly, reaching 0 by 19:00. This hourly data underscores the importance of sun safety, especially during peak hours when UV exposure is at its highest.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 2 | low | 45 min |
08:00 | 5 | moderate | 30 min |
09:00 | 9 | very high | 15 min |
10:00 | 12 | extreme | 10 min |
11:00 | 14 | extreme | 10 min |
12:00 | 14 | extreme | 10 min |
13:00 | 11 | extreme | 10 min |
14:00 | 8 | 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 experiences monthly variations, but consistently remains in the extreme exposure category from January through November, with relatively lower levels in December. The highest UV levels occur between March and May, peaking at an index of 15, indicating a critical burn time of just 10 minutes. Given these figures, the high-risk months are particularly from March to May, where heightened sun exposure can lead to severe skin damage in a short period. Visitors and residents are strongly advised to take precautions during these months, such as wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade, especially during peak sun hours. Even in December, with a UV index of 10, caution is necessary as the burn time is still only 15 minutes.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
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 |
Siquirres | 12 | 13 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 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 |