UV Index in Rengo, Chile

Last updated: August 1, 2025

In Rengo, Chile, staying informed about the UV Index is essential for safeguarding your skin health and preventing sunburn throughout the year. With its Csb climate, Rengo experiences varied UV exposure risks, especially during midday hours when UV levels can peak at 4. Understanding these levels empowers residents and visitors to take necessary precautions when engaging in outdoor activities. By being UV-aware, you can better protect yourself from harmful rays, ensuring not only immediate comfort but also long-term skin health. Remember, even on seemingly mild days, the sun can pose significant risks!

Hourly UV Index in Rengo

The UV Index today starts low, with maximum values reaching 0 by 7:00 AM. As the sun rises, it gradually climbs to 1 at 8:00 AM and stays steady until 9:00 AM. By 10:00 AM, the index jumps to 2, marking the onset of more direct sunlight. The UV exposure peaks at 4 from 12:00 PM to 14:00 PM, signaling a critical time for sun protection. Following this peak, it dips back to 2 at 15:00 PM before easing further to 1 by 16:00 PM. Finally, the day wraps up with 0 UV exposure by 19:00 PM, making the late afternoon a much safer time for outdoor activities. Don't forget to apply sunscreen during the midday 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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	3	moderate	30 min
11:00	5	moderate	30 min
12:00	6	high	25 min
13:00	6	high	25 min
14:00	5	moderate	30 min
15:00	3	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 Rengo

The UV Index exhibits significant seasonal fluctuations, with January, February, March, October, November, and December classified as high-risk months due to extreme levels, where a mere 10 minutes of exposure can lead to sunburn. April transitions to very high exposure with a 15-minute burn time, while May and June see a drop to moderate levels, allowing for safer exposure of 30 minutes. As summer progresses, July maintains a moderate index, but the risk increases again in August with a high category and a burn time of 25 minutes. September returns to very high levels, emphasizing caution. Visitors and residents should exercise heightened vigilance during these high-risk months by applying sunscreen, wearing protective clothing, and seeking shade, particularly from late fall through early spring when UV exposure remains dangerously high.

Monthly Maximum UV Index for Rengo, Chile

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

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

Rengo's solar exposure compared to other cities in Chile. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Santiago UVI	14	12	11	7	5	3	4	6	8	11	12	14
Valparaiso UVI	14	12	11	8	5	4	4	6	8	11	12	14
Vina del Mar UVI	14	12	11	8	5	4	4	6	8	11	12	14
Rengo	14	13	11	8	5	4	4	6	8	11	13	14
Puente Alto UVI	15	14	12	8	6	4	6	8	11	12	14	15
Antofagasta UVI	15	15	13	10	8	6	7	9	11	14	15	15