UV Index in San Jose, Peru

Last updated: June 2, 2025

In San Jose, Peru, staying aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels can help you prevent painful sunburns and long-term skin damage, making it essential for both residents and visitors to keep track of daily exposure. With its BWh climate, San Jose experiences high UV levels, particularly between 10 AM and 2 PM, peaking at an intense 11. By being informed about the UV Index, you can enjoy the sunny days while minimizing risks and ensuring your skin stays healthy and safe.

Hourly UV Index in San Jose

The UV Index begins the day at a gentle 1 at 7:00 AM, gradually climbing to a moderate 2 by 8:00 AM. As the sun rises higher, the intensity peaks at 11 around 12:00 PM, signaling a high risk of harm from unprotected sun exposure. The index then descends steadily, dropping to 5 by 3:00 PM, and further declining to 2 by 4:00 PM. By evening, the levels return to a mild 1 at 5:00 PM and lower to 0 after sunset at 7:00 PM. It's a day to embrace the sun during midday while being mindful of skin protection!

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	1	low	45 min
08:00	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	10	very high	15 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	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in San Jose

Throughout the year, the UV Index remains consistently high, indicating an extreme risk of harm from unprotected sun exposure. From January to April, the UV Index peaks at 15, creating a significant risk environment, followed closely by May and June where it remains high at 13 and 11, respectively. The high-risk months typically span from February to September, especially marked in March and September when the UV Index reaches 15 again. Visitors and residents should take precautions throughout the year, particularly during these peak months, by wearing sunscreen, protective clothing, and seeking shade to minimize the risk of skin damage, as 10 minutes of unprotected exposure can lead to burns.

Monthly Maximum UV Index for San Jose, Peru

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Jose. 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 San Jose, 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 San Jose UV Index with Other Peru Cities

The table above highlights how UV exposure in San Jose compares to other major locations across Peru. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

San Jose's solar exposure compared to other cities in Peru. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Callao UVI	14	14	14	12	10	9	10	11	12	13	14	13
Lima UVI	14	14	14	12	10	9	10	11	12	13	14	13
Trujillo UVI	15	15	15	14	12	11	11	11	13	14	14	14
San Jose	14	15	15	14	13	11	11	12	15	14	14	13
Chiclayo UVI	14	15	15	14	13	11	11	12	15	14	14	13
Arequipa UVI	18	17	17	15	12	10	11	13	15	17	18	17