UV Index in Marianna, United States

Last updated: July 2, 2025

In Marianna, United States, understanding the UV Index is crucial for protecting your skin from harmful sun exposure. With peak UV levels reaching as high as 11 during midday, awareness of these readings can significantly help in preventing sunburn and promoting overall skin health. Given Marianna's humid subtropical climate, residents and visitors face unique risks, especially during the warmer months when UV rays are most intense. By staying informed about the daily UV Index, you can take proactive measures to enjoy the sun safely and help prevent long-term skin damage.

Hourly UV Index in Marianna

As the sun rises, the UV Index gradually climbs, starting at a mild 1 at 07:00. By 09:00, it reaches a moderate 4, signaling a need for some sun protection. The intensity peaks at 12:00 with a powerful 10, indicating strong sunlight. The highest point, 11 at 13:00, urges sun safety awareness as the afternoon sun bears down. However, relief comes as the sun begins to set; the index dips to 9 by 15:00, then gradually decreases to 4 at 17:00, and finally back to a safe 1 by 19:00. Throughout the day, staying vigilant against UV exposure is key!

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	6	high	25 min
11:00	9	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	9	very high	15 min
16:00	6	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 Marianna

The UV Index experiences significant seasonal changes, with peak levels occurring between March and July, where the index reaches as high as 12 in June, indicating extreme exposure risks. The months of April through August are identified as high-risk, with a very high to extreme classification that can lead to sunburn in just 10 to 15 minutes of unprotected exposure. Consequently, visitors and residents are strongly advised to take precautions during these months, by seeking shade, wearing protective clothing, and applying sunscreen regularly. As the year progresses into the fall and winter months, the UV Index decreases, returning to moderate levels by November and December, making outdoor activities less risky but still requiring some sun protection.

Monthly Maximum UV Index for Marianna, United States

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

The table above highlights how UV exposure in Marianna 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.

Marianna'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
Marianna	4	6	8	10	11	12	11	10	9	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5