UV Index in Mana, French Guiana

Last updated: July 2, 2025

In Mana, French Guiana, understanding the UV Index is crucial for protecting your skin from harmful rays. With its tropical climate, Mana experiences intense sunlight, particularly during midday hours when UV levels peak, reaching as high as 12. Recognizing these levels helps residents and visitors alike to take necessary precautions against sunburn and long-term skin damage. By staying informed about the UV Index, you can enjoy the beautiful outdoors while prioritizing your skin health and wellbeing amidst the region's typical exposure risks.

Hourly UV Index in Mana

The UV Index data for the day reveals a dramatic rise in sun exposure as the hours progress. Starting at a gentle 1 at 07:00, it swiftly climbs to 2 by 08:00. By 09:00, the index reaches a moderate 4, but it’s from 10:00 onwards that the sun’s strength truly shines, peaking at an intense 12 during the noon hours of 12:00 and 13:00. This memorable midday height signifies the critical time for protection against harmful UV rays. The afternoon sees a slight drop, with values decreasing to 11 at 14:00 and then tapering down to 7 at 15:00. As the sun begins its descent, the UVI returns to safer levels, falling to 4 by 16:00, and dwindling to 1 at 18:00 before settling at 0 by 19:00. As such, it’s crucial to stay vigilant and protect your skin during peak UV hours!

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	12	extreme	10 min
14:00	11	extreme	10 min
15:00	7	high	25 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Mana

Throughout the year, the UV Index remains exceptionally high in this region, peaking at 16 during both March and April, categorizing these months as high-risk for UV exposure. The extreme exposure category applies from January through May, with consistent burn times of just 10 minutes, indicating that prolonged sun exposure can lead to severe skin damage. While the UV Index slightly decreases during the summer months, it remains at a concerning level, particularly during February to May. Visitors and residents are strongly advised to take protective measures by wearing sunscreen, long sleeves, and UV-blocking sunglasses, especially during these high-risk months to minimize the risk of skin damage. Regular checks of the UV Index are recommended to stay informed and safe.

Monthly Maximum UV Index for Mana, French Guiana

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

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

Mana's solar exposure compared to other cities in French Guiana. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Matoury UVI	13	14	16	16	14	13	12	13	13	13	13	12
Mana	13	14	16	16	14	13	12	13	13	13	13	11
Remire-Montjoly UVI	13	14	16	16	14	13	12	13	13	13	13	12
Cayenne UVI	13	14	16	16	14	13	12	13	13	13	13	12
Kourou UVI	13	14	16	16	14	13	12	13	13	13	13	12
Saint-Laurent-du-Maroni UVI	13	14	16	15	14	13	12	13	13	13	13	11