UV Index in Guapiles, Costa Rica

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Guapiles, Costa Rica, where the sun's rays can be particularly intense due to its tropical climate. With UV levels frequently peaking between 11:00 AM and 1:00 PM, recognizing these levels is vital for sunburn prevention and maintaining long-term skin health. Being aware of the UV Index helps you plan outdoor activities safely, reducing the risk of skin damage while enjoying the vibrant beauty of Guapiles. As you explore this lush area, remember that even brief exposure during high UV times can lead to harmful effects, so stay informed and protect your skin!

Hourly UV Index in Guapiles

The UV index throughout the day presents an intriguing journey of exposure, peaking at 13 from 11:00 AM to 12:00 PM—the sun's most intense moment. Starting from a modest 2 at 7:00 AM, the index swiftly escalates, hitting 4 by 8:00 AM and soaring to a substantial 11 at 10:00 AM. Just one hour later, it reaches its zenith, radiating at 13, before gradually descending as the afternoon wanes. By 3:00 PM, it's a more manageable 5, eventually dwindling down to 0 by 7:00 PM, signaling a safe retreat from the sun's rays. This dynamic UV pattern serves as a reminder to stay vigilant under the sun, especially during its peak hours when protective measures are essential.

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.
Time	UVI	Category	Time to Burn
07:00	2	low	45 min
08:00	4	moderate	30 min
09:00	8	very high	15 min
10:00	11	extreme	10 min
11:00	13	extreme	10 min
12:00	13	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

Monthly UV Index Trends in Guapiles

Throughout the year, the UV Index displays seasonal variations that reflect increased sun exposure, particularly from January to May, where it consistently remains at extreme levels (11-14) with a burn time of just 10 minutes. This trend indicates that March, April, and May are the highest-risk months, urging visitors and residents to take extra precautions during these months. While June to October maintains an extreme UV Index, it slightly decreases to 13. As winter approaches, November sees a drop to 11, followed by December's very high level of 10. Therefore, it is crucial for everyone to practice sun safety measures—such as seeking shade, wearing protective clothing, and applying sunscreen—especially from January to May to mitigate the risk of harmful UV exposure.

Monthly Maximum UV Index for Guapiles, Costa Rica

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Guapiles. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Guapiles, 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 Guapiles UV Index with Other Costa Rica Cities

The table above highlights how UV exposure in Guapiles 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.

Guapiles's solar exposure compared to other cities in Costa Rica. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Guapiles	11	13	14	14	14	13	13	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