UV Index in Saint-Louis, Senegal

Last updated: July 2, 2025

Understanding the UV Index in Saint-Louis, Senegal is crucial for protecting yourself against harmful ultraviolet radiation. With the city's hot semi-arid climate, residents and visitors face heightened exposure to UV rays, especially during peak hours when the index can soar to 13. Knowledge of UV levels is vital not just for preventing painful sunburns but also for safeguarding long-term skin health. By staying informed about the daily UV Index, you can make smart choices to enjoy the sun safely while minimizing the risks associated with excessive UV exposure.

Hourly UV Index in Saint-Louis

The UV Index journey begins early, with mild levels of 1 at 07:00 and 08:00. As the sun rises higher, the intensity spikes, reaching 3 by 09:00. By 10:00, it climbs to 6, hinting at the intensifying sun. At 11:00, we hit 9, and by noon, the levels peak at a staggering 12—a clear signal to seek shade! The maximum UV exposure occurs from 13:00 to 14:00, registering 13 before it begins to wane. The afternoon sees a descent back to 10 at 15:00, followed by a gentle dip to 6 at 16:00. As the day transitions into evening, the UV Index drops to 3 at 17:00 and settles back at 1 by 18:00 and 19:00, concluding a day of sunshine and caution. Be sure to protect your skin during peak 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	1	low	45 min
09:00	3	moderate	30 min
10:00	6	high	25 min
11:00	9	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	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 Saint-Louis

During the year, UV radiation fluctuates significantly, with the highest risk months being from March to October when the UV Index ranges from 12 to 14, categorized as extreme. In contrast, the winter months of January, February, and December have very high UV Index values of 8 to 10 and longer burn times of 15 minutes. Given this data, visitors and residents are strongly advised to take precautionary measures during these high-risk months by limiting sun exposure, wearing protective clothing, and using sunscreen, especially between 11 AM and 3 PM when UV intensity peaks. Staying informed and taking these steps can help mitigate the risks of sunburn and skin damage.

Monthly Maximum UV Index for Saint-Louis, Senegal

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Saint-Louis. 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 Saint-Louis, 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 Saint-Louis UV Index with Other Senegal Cities

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

Saint-Louis's solar exposure compared to other cities in Senegal. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pikine UVI	9	10	12	13	12	12	13	13	13	11	10	9
Dakar UVI	9	10	12	13	12	12	13	13	13	11	10	9
Thies Nones UVI	9	10	12	13	12	12	13	13	13	11	10	8
Thies UVI	9	10	12	13	12	12	13	13	13	11	10	8
Saint-Louis	9	10	12	14	13	13	13	13	13	12	10	8
Touba UVI	9	10	12	14	13	13	14	14	13	12	10	8