UV Index in Cuba, United States

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Cuba and the United States, as it plays a vital role in protecting skin health and preventing sunburn. With UV levels peaking at a dangerous 13 around midday, awareness of these fluctuations can be the difference between enjoying the sunshine and suffering from harmful effects. Cuba's climate, characterized by a warm tropical environment, presents unique challenges during outdoor activities. By staying informed about the UV Index, you can take necessary precautions to safeguard your skin and enjoy the beautiful Cuban sun!

Hourly UV Index in Cuba

Throughout the day, the UV Index experiences a dynamic shift, peaking at an impressive 13 between 1 PM and 2 PM, indicating a high risk of harm from unprotected sun exposure. The morning starts gently, with a UV Index of 1 at 7 AM, gradually rising to 4 by 9 AM. As the sun inches higher, the intensity increases sharply, reaching 10 by 11 AM and soaring to 12 by noon. Post-peak, the index begins to decline, dropping to 10 at 3 PM, before settling back to a mild 2 by 6 PM. This clear progression emphasizes the importance of sun protection during the midday hours when the UV Index is at its highest. Enjoy the sunshine, but remember to stay safe! ☀️

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	10	very high	15 min
16:00	7	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Cuba

As we move through the year, seasonal UV changes present significant variations in sun exposure risk. High-risk months are notably from March to September, where the UV Index reaches extreme levels, peaking at 13 in June and July. During these months, the recommended burn time decreases to just 10 minutes, indicating a critical need for protective measures. Conversely, January, February, and December present lower UV Index levels, categorized as moderate to high, allowing for longer exposure times. Visitors and residents are strongly advised to implement sun safety practices during peak months—such as wearing sunscreen, protective clothing, and seeking shade—to minimize the risk of skin damage. As a rule of thumb, keep an eye on the daily UV Index and adjust your outdoor activities accordingly.

Monthly Maximum UV Index for Cuba, United States

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

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

Cuba's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Chicago UVI	3	4	6	8	9	10	10	9	8	6	4	2
Brooklyn UVI	3	5	6	8	10	10	9	9	8	6	4	2
New York City UVI	3	5	6	8	10	10	9	9	8	6	4	2
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5
Cuba	5	7	10	11	12	13	13	12	11	8	6	4