UV Index in Viacha, Bolivia

Last updated: June 2, 2025

Understanding the UV Index is vital for residents and visitors in Viacha, Bolivia, where high altitudes and bright sunlight increase the risk of harmful UV exposure. With typical daily UV levels reaching peaks of 10 around midday, awareness is essential for preventing sunburn and protecting skin health. Viacha’s unique Cwc climate often means clear, sunny days that can quickly escalate UV risks, making it crucial to monitor UV intensity and take appropriate sun safety measures. Stay informed and enjoy the sunshine wisely!

Hourly UV Index in Viacha

The UV Index data for the day presents a clear pattern of increasing and then decreasing exposure. Starting at a low of 1 at 07:00, the index climbs steadily, peaking at a maximum of 10 between 12:00 and 13:00—indicating high-risk sun exposure. As the afternoon progresses, the levels begin to dip, dropping to 6 by 15:00 and continuing downward to 1 by 17:00. Finally, the UV Index settles to 0 after 18:00, marking the end of a day with notable sun intensity that calls for vigilant sun protection during 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	1	low	45 min
09:00	3	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	10	very high	15 min
13:00	10	very high	15 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	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Viacha

Throughout the year, the UV Index in this region exhibits high values, particularly from January to November, consistently marking an extreme exposure category with a burn time of just 10 minutes in many months. The UV Index reaches its peak in early months, remaining at 19 until May, before slightly decreasing in June to 10 (very high), then escalating again in July to 11 (extreme). This trend continues, with August jumping to 14 and staying high through September and October at 16 and 18, respectively, before returning to 19 in November and December. Visitors and residents are strongly advised to take precautions, especially during high-risk months (January to April and July to November), by wearing protective clothing, applying sunscreen regularly, and limiting exposure during peak sunlight hours to reduce the risk of sunburn and skin damage.

Monthly Maximum UV Index for Viacha, Bolivia

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

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

Viacha's solar exposure compared to other cities in Bolivia. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Santa Cruz de la Sierra UVI	15	15	14	13	10	8	9	10	12	15	16	16
Sucre UVI	17	17	16	14	11	9	10	12	15	17	17	18
Sacaba UVI	17	18	17	15	12	10	10	13	15	17	18	19
Cochabamba UVI	18	18	17	15	12	10	11	13	16	18	18	19
Oruro UVI	19	19	17	16	13	10	11	14	16	19	19	19
Viacha	19	19	18	16	13	10	11	14	16	18	19	19