UV Index in Siquirres, Costa Rica

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.

Hourly UV Index in Siquirres

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.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
TimeUVICategoryTime to Burn
07:002low45 min
08:005moderate30 min
09:009very high15 min
10:0012extreme10 min
11:0014extreme10 min
12:0014extreme10 min
13:0011extreme10 min
14:008very high15 min
15:005moderate30 min
16:002low45 min
17:001low45 min
18:000low45 min
19:000low45 min

Monthly UV Index Trends in Siquirres

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.

Monthly Maximum UV Index for Siquirres, Costa Rica

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Siquirres. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec121315151414141414141210
Data source: Statistical UV Index data for Siquirres, based on information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Compare Siquirres UV Index with Other Costa Rica Cities

The table above highlights how UV exposure in Siquirres compares to other major locations across Costa Rica. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Siquirres's solar exposure compared to other cities in Costa Rica. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Limon UVI121314151413131313141110
Liberia UVI111314141414141313131110
Alajuela UVI121315151414141313141210
Siquirres121315151414141414141210
San Jose UVI121415161414141414151211
Paraiso UVI131416161515151414151211