UV Index in Antofagasta, Chile

Last updated: July 2, 2025

In Antofagasta, Chile, being aware of the UV Index is crucial for protecting your skin and maintaining overall health. Understanding UV levels helps prevent sunburn and reduces the risk of long-term skin damage, making it essential for anyone enjoying the outdoors. With its semi-arid climate typical of the BWk zone, Antofagasta experiences high UV exposure, particularly during midday when levels peak at 7. Equip yourself with knowledge and stay vigilant against harmful rays to enjoy the sunny beauty of this coastal city safely!

Hourly UV Index in Antofagasta

The UV Index throughout the day reveals a dynamic and vibrant midday sun. Starting at 07:00, the UV levels are negligible at 0, slowly rising to 1 by 08:00. As the clock ticks towards 10:00, the intensity escalates to 4, reaching its peak at 12:00 with a robust 7. This high level of UV radiation continues until 14:00, when it slightly declines to 6. As the afternoon progresses, it tapers off, dropping to 4 at 15:00, and further decreasing to 2 by 16:00. The evening ushers in a calming effect, with levels settling back to 1 at 17:00 and 18:00, before retreating to 0 by 19:00. This pattern emphasizes the importance of sun protection during the daylight hours, especially when the index peaks at midday.

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	4	moderate	30 min
11:00	6	high	25 min
12:00	7	high	25 min
13:00	7	high	25 min
14:00	6	high	25 min
15:00	4	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 Antofagasta

Throughout the year, UV exposure fluctuates significantly, with extreme levels particularly prevalent during the winter and late autumn months. High-risk months include January, February, March, September, October, November, and December, where the UV Index reaches as high as 15, indicating extreme exposure that can lead to sunburn in just 10 minutes. Conversely, the spring and summer months show a gradual decrease in UV levels, peaking at May with a UV Index of 8 and a very high exposure category. It's crucial for both visitors and residents to take precautions year-round, especially during high-risk months, by wearing broad-spectrum sunscreen, protective clothing, and seeking shade when outdoors. Remember, even on cloudy days, UV rays can pose a significant risk to skin health.

Monthly Maximum UV Index for Antofagasta, Chile

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

The table above highlights how UV exposure in Antofagasta 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.

Antofagasta'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
Puente Alto UVI	15	14	12	8	6	4	6	8	11	12	14	15
Antofagasta	15	15	13	10	8	6	7	9	11	14	15	15