UV Index in Castillo, Dominican Republic

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Castillo, Dominican Republic, where the sun's rays can be particularly intense due to its tropical climate. Being aware of UV levels helps prevent sunburn and protects skin health, ensuring outdoor activities can be enjoyed safely. Throughout the day, especially between 11:00 AM and 1:00 PM, the UV Index in Castillo often peaks at levels that warrant caution, reaching as high as 13. With such potential risks associated with UV exposure, it's vital to check the index regularly and take appropriate sun safety measures.

Hourly UV Index in Castillo

As the sun rises, the UV Index gradually escalates, starting from a mild 1 at 07:00 and peaking at an intense 13 by 13:00. The morning hours see a steady climb, reaching 10 at 11:00 and hitting a blistering 12 by noon. This peak intensity of 13 indicates high risk for harm from unprotected sun exposure. As the afternoon progresses, the UV Index begins to decline, dropping to 8 at 15:00 and further to 5 by 16:00. By evening, it returns to a safer level, resting at 1 by 18:00 and remaining consistent until 19:00. Throughout the day, it's essential to stay informed and protect your skin, especially during those peak hours when the sun's rays are most potent.

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	13	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Castillo

Throughout the year, the UV Index shows significant seasonal variation, with the highest levels occurring from February to September. The most critical months for UV exposure are February, March, April, May, July, and August, where the UV Index consistently reaches extreme levels (above 11) with a burn time as short as 10 minutes. Visitors and residents should take precautions during these high-risk months by seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen frequently. As the year progresses into the later months, while the UV Index decreases slightly, it is still advisable to remain vigilant, especially in November and December when the UV levels are at very high (9) and high (8), respectively, as 15-minute burn times can still pose a risk.

Monthly Maximum UV Index for Castillo, Dominican Republic

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

The table above highlights how UV exposure in Castillo 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.

Castillo'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
Castillo	9	11	13	13	13	12	13	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