UV Index in Jaco, Costa Rica

Last updated: July 2, 2025

Understanding the UV Index in Jaco, Costa Rica is crucial for anyone looking to enjoy the sun-soaked beaches while prioritizing skin health. With the potential for intense UV radiation, especially during peak hours, awareness of UV levels is essential in preventing painful sunburns and long-term skin damage. Jaco's tropical climate not only promises beautiful weather but also increases the risk of UV exposure, particularly from late morning until early afternoon when the index can soar as high as 14. Stay informed, safeguard your skin, and make the most of your time in this breathtaking coastal paradise!

Hourly UV Index in Jaco

As the sun rises, the UV Index starts off low at 2 at 07:00, perfect for a morning stroll. By 08:00, it climbs to 4, indicating a bit more sun exposure. The heat of the day peaks between 10:00 and 12:00, with the UV Index soaring to a striking 14 at 12:00. This is the time to take precautions! As the afternoon wanes, the index gradually declines, dropping to 9 by 14:00 and falling further to 5 at 15:00. By the evening, it’s safe to venture out again, with levels decreasing to a mere 0 by 18:00 and remaining so through the night. Stay sun-smart and enjoy the beautiful day while knowing when to seek shade!

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	14	extreme	10 min
13:00	12	extreme	10 min
14:00	9	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 Jaco

Throughout the year, UV Index levels indicate extreme exposure risk from January to July, with values consistently reaching 13 to 14. February, March, April, May, July, and August are identified as high-risk months, where the UV Index peaks at 14, indicating a burn time of just 10 minutes. Residents and visitors should take precautions during these months by wearing protective clothing, applying sunscreen regularly, and seeking shade when possible. As the year progresses, the UV Index gradually decreases, with November and December showing lower, albeit still significant levels. It's crucial to remain vigilant year-round, especially during the high-risk months, to protect skin health.

Monthly Maximum UV Index for Jaco, Costa Rica

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

The table above highlights how UV exposure in Jaco 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.

Jaco'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
Jaco	11	13	13	14	14	13	14	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