UV Index in Rio Grande, Dominican Republic

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Rio Grande, Dominican Republic, where the sun shines brightly throughout the year. By monitoring UV levels, you can effectively prevent sunburn and safeguard your skin health against the harmful effects of excessive sun exposure. Rio Grande’s tropical climate offers beautiful sunny days but also presents significant risks, especially when UV indexes peak at an impressive 13 around midday. With awareness of daily UV fluctuations, you can enjoy the vibrant outdoors while protecting yourself from serious skin damage.

Hourly UV Index in Rio Grande

The UV Index during the day reveals a notable peak in sun exposure. Starting at 07:00 with a gentle 1, it gradually climbs to 2 by 08:00. As the sun rises higher, the index surges dramatically, hitting 5 at 09:00, and reaching a striking 8 by 10:00. The intensity peaks at 12:00 with a scorching 13, remaining high until 13:00. After that, it starts to decline, returning to 11 at 14:00 and falling to 8 by 15:00. As the afternoon wanes, the index drops to 5 at 16:00, and finally settles back to 1 by 18:00 and 19:00. This data highlights the importance of sun safety measures during the midday hours when UV exposure is at its highest.

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	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	13	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 Rio Grande

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 Rio Grande, Dominican Republic

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

The table above highlights how UV exposure in Rio Grande 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.

Rio Grande'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
Rio Grande	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