UV Index in Roxana, Costa Rica

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Roxana, Costa Rica, where the tropical climate intensifies sun exposure, particularly during the mid-day hours. Awareness of UV levels is essential not only for preventing sunburn but also for maintaining long-term skin health and reducing the risk of skin cancers. With UV Index values peaking at 13 between 11:00 AM and 12:00 PM, it's vital to be prepared to protect your skin from harmful rays. Whether you're basking on the beach or exploring the vibrant landscapes, being informed about the UV index can help you enjoy Roxana’s beautiful outdoor activities safely.

Hourly UV Index in Roxana

As the sun rises, the UV Index begins to climb, starting from a gentle 2 at 07:00. By 08:00, it ramps up to 5, signaling the need for some sun protection. The real intensity hits at 10:00, reaching a peak of 11, and by 11:00 and 12:00, it soars to 13—the core of the day where precautions are essential. As afternoon approaches, UV intensity starts to wane: it drops to 8 at 14:00 and further decreases to 4 by 15:00. The evening brings relief as the index falls to 2 at 16:00 and finally dwindles to 0 by 19:00. It's a clear reminder to stay vigilant during the peak hours to enjoy the sun safely!

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	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	13	extreme	10 min
13:00	11	extreme	10 min
14:00	8	very high	15 min
15:00	4	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 Roxana

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 Roxana, Costa Rica

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Roxana. 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 Roxana, 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 Roxana UV Index with Other Costa Rica Cities

The table above highlights how UV exposure in Roxana 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.

Roxana'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
Roxana	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