UV Index in Los Chiles, Costa Rica

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Los Chiles, Costa Rica, where the tropical climate presents unique challenges regarding sun exposure. With UV levels peaking at a hazardous 13 during midday hours, being informed about these levels can help prevent sunburn and long-term skin damage. The sun's intensity in this Aw climate zone means that even short exposures can be risky without proper protection. Stay aware of the UV Index to enjoy the beautiful outdoors safely while safeguarding your skin health.

Hourly UV Index in Los Chiles

The UV Index throughout the day showcases a dynamic and intense solar experience. Starting at 7:00 AM, it begins modestly at 2, gradually escalating to 5 by 8:00 AM. The real surge occurs by 9:00 AM, peaking at a striking 11 by 10:00 AM, and reaching its maximum of 13 during both 11:00 AM and 12:00 PM. As the afternoon unfolds, the index starts to decline, dipping to 12 at 1:00 PM and tapering off to 8 by 2:00 PM. By mid-afternoon, the UV intensity diminishes further, falling to 5 at 3:00 PM, before settling at a gentle 2 by 4:00 PM. The evening brings a welcome respite, with the UV Index reducing to 1 at 5:00 PM and finally dropping to zero by 7:00 PM, marking the end of a day characterized by significant exposure potential. Stay protected during those peak UV hours!

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
09:008very high15 min
10:0011extreme10 min
11:0013extreme10 min
12:0013extreme10 min
13:0012extreme10 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 Los Chiles

The UV Index varies throughout the year, with the highest readings occurring from March to July, where it consistently reaches levels of 14, categorized as extreme. This means that during these months, the burn time is as short as 10 minutes, posing a significant risk to unprotected skin. February also shows a high UV Index of 12, indicating that February to August are the high-risk months for sun exposure. Visitors and residents are strongly advised to take necessary precautions during these months, including wearing protective clothing, applying broad-spectrum sunscreen regularly, and seeking shade whenever possible. As we move into November and December, the UV Index gradually decreases, with December still presenting a very high risk at an index of 10, so vigilance is still encouraged even during winter months.

Monthly Maximum UV Index for Los Chiles, Costa Rica

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Los Chiles. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec111314141413141313131110
Data source: Statistical UV Index data for Los Chiles, 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 Los Chiles UV Index with Other Costa Rica Cities

The table above highlights how UV exposure in Los Chiles 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.
Los Chiles's solar exposure compared to other cities in Costa Rica. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Los Chiles111214141413141313131110
Limon UVI121314151413131313141110
Liberia UVI111314141414141313131110
Alajuela UVI121315151414141313141210
San Jose UVI121415161414141414151211
Paraiso UVI131416161515151414151211