UV Index in Castanuelas, Dominican Republic

Last updated: June 2, 2025

Understanding the UV Index in Castanuelas, Dominican Republic is vital for protecting your skin and overall health. With high UV levels peaking around noon, awareness of these ratings can help prevent painful sunburns and long-term skin damage. Castanuelas, with its tropical climate, presents unique sun exposure risks that can easily catch residents and visitors off guard. By staying informed about daily UV Index fluctuations, you can enjoy the vibrant outdoors safely while keeping your skin healthy and protected.

Hourly UV Index in Castanuelas

At dawn, the UV Index starts off gently, peaking at just 1 by 7:00 AM. As the sun climbs higher, its intensity increases rapidly, reaching 4 by 9:00 AM and striking 10 by 11:00 AM—a clear warning to seek shade or slather on sunscreen. The highest reading of 12 occurs at both noon and 1:00 PM, indicating peak solar intensity. Fortunately, as afternoon approaches, the index begins to wane, dropping to 8 by 3:00 PM and further declining to below 5 by 4:00 PM. By the time 7:00 PM rolls around, the UV danger has diminished significantly, settling back to a safe 1. Stay protected during those intense 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	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	12	extreme	10 min
13:00	12	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Castanuelas

During the year, the UV Index exhibits significant seasonal variations, with the highest readings occurring from February through August, when the index typically peaks at 13, classified as extreme exposure. The months of March, April, May, and August are particularly high-risk, with a burn time of just 10 minutes. In contrast, the winter months of January and December present a lower risk, with a UV Index of 8, categorized as very high, allowing for a slightly longer burn time of 15 minutes. Given the extreme UV levels during peak months, it is crucial for visitors and residents to take precautionary measures, such as wearing sunscreen, protective clothing, and sunglasses, especially from February to August to mitigate the risk of skin damage.

Monthly Maximum UV Index for Castanuelas, Dominican Republic

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

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

Castanuelas's solar exposure compared to other cities in Dominican Republic. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Castanuelas	8	11	13	13	13	12	12	13	12	11	9	8
Santiago de los Caballeros UVI	9	11	13	13	13	12	13	13	12	11	9	8
Santo Domingo Oeste UVI	9	11	13	13	13	12	13	13	13	11	9	8
Santo Domingo UVI	9	11	13	13	13	12	13	13	13	11	9	8
Santo Domingo Este UVI	9	11	13	13	13	12	13	13	13	11	9	8
San Pedro de Macoris UVI	9	11	13	13	13	12	13	13	13	11	9	8