UV Index in San Martin, Peru

Last updated: June 2, 2025

Understanding the UV Index in San Martin, Peru, is crucial for safeguarding your skin against harmful ultraviolet rays. With a climate characterized by warm, dry conditions typical of the BWh zone, residents and visitors alike are at risk of sunburn and long-term skin damage if UV levels are not monitored. During peak hours, particularly between 11:00 AM and 1:00 PM, the index can soar to 11, indicating extreme risk, making awareness and proactive sun safety measures essential. Keeping an eye on the UV Index helps prevent overexposure and promotes better skin health, ensuring you enjoy the sunny days in San Martin safely.

Hourly UV Index in San Martin

The UV Index for the day presents a clear picture of sun intensity, starting off gentle in the early hours. At 7:00 AM, it begins at a mild 1, increasing to 2 by 8:00 AM. As the sun rises higher, the index climbs rapidly; by 10:00 AM, it reaches 7 and peaks at an intense 11 around 12:00 PM and 1:00 PM. After this zenith, the levels gradually decline, dropping to 9 by 2:00 PM, 6 at 3:00 PM, and settling back to a safe 1 by 5:00 PM. The UV exposure diminishes further, reaching a low of 0 by 7:00 PM. Stay protected during those peak 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.
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	10	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	9	very high	15 min
15:00	6	high	25 min
16:00	3	moderate	30 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 Martin

The UV Index remains consistently high throughout the year, particularly in the initial months from January to April, where it peaks at 16 in March, categorizing these months as high-risk for UV exposure. Even in the latter half of the year, months like September and October maintain high indices of 14. With extreme exposure categories and a quick burn time of just 10 minutes across all months, it is crucial for both visitors and residents to take precautionary measures. This includes wearing protective clothing, using broad-spectrum sunscreen, and seeking shade during peak sunlight hours to minimize the risk of skin damage. Regular monitoring of UV levels can aid in planning outdoor activities safely throughout the year.

Monthly Maximum UV Index for San Martin, Peru

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

The table above highlights how UV exposure in San Martin 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 Martin'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
Chiclayo UVI	14	15	15	14	13	11	11	12	15	14	14	13
San Martin	14	15	16	15	13	11	11	12	14	14	14	13
Arequipa UVI	18	17	17	15	12	10	11	13	15	17	18	17