UV Index in Guantanamo, Cuba

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors in Guantanamo, Cuba. With its tropical climate, the region experiences significant sun exposure, making awareness of UV levels vital for preventing sunburn and promoting long-term skin health. As the UV Index rises throughout the day—peaking at a striking 13 around 1 PM—it's essential to take precautions when enjoying outdoor activities. By being informed about the daily UV Index, you can effectively safeguard yourself against the harmful effects of ultraviolet radiation and enjoy the sunny beauty of Guantanamo more safely.

Hourly UV Index in Guantanamo

The UV Index today showcases a dramatic rise in sun exposure as the day progresses. Starting at 7:00 AM with a mild value of 1, the index climbs steadily to reach 4 by 9:00 AM. However, it's around 11:00 AM that the UV radiation peaks at 10, escalating further to a maximum of 12 at noon. The sun’s intensity continues to be fierce, reaching a high of 13 by 1:00 PM before gradually tapering off. From 2:00 PM, the index starts its descent, hovering at 12 and then dropping to 9 by 3:00 PM. As the afternoon transitions into evening, the UV levels diminish significantly, resting at 1 by 7:00 PM. For anyone spending time outdoors, taking precautions during the peak hours is crucial to ensure safety from harmful UV rays.

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	12	extreme	10 min
15:00	9	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Guantanamo

The UV Index exhibits significant seasonal changes, with high-risk months occurring primarily from February to October, where the index remains in the extreme category. March through September consistently shows a peak UV Index of 13, indicating a burn time of only 10 minutes. Even in January and November, where the index falls to 9, the exposure level is still categorized as very high, necessitating caution. During these months, it is crucial for both visitors and residents to take protective measures, such as wearing sunscreen, protective clothing, and sunglasses, especially during peak sunlight hours. Stay vigilant and prioritize skin safety throughout the year, particularly in the high-risk months.

Monthly Maximum UV Index for Guantanamo, Cuba

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

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

Guantanamo's solar exposure compared to other cities in Cuba. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Havana UVI	7	10	11	12	12	13	12	12	12	10	8	7
Camaguey UVI	8	10	12	13	13	13	12	12	12	11	9	7
Holguin UVI	8	11	12	13	13	13	13	13	12	11	8	7
Santiago de Cuba UVI	9	11	12	13	13	13	13	13	13	11	9	8
Guantanamo	9	11	12	13	13	13	13	13	13	11	9	8