UV Index in Sao Tome, Sao Tome and Principe

Last updated: May 3, 2025

In Sao Tome, understanding the UV Index is crucial for safeguarding your skin and overall health in this tropical paradise. With UV levels peaking in the late morning and early afternoon—reaching a staggering 13—being aware of these fluctuations can help prevent painful sunburns and long-term skin damage. Given the island's warm climate and high exposure to ultraviolet radiation, it's essential to stay informed about daily UV risks. By taking simple precautions, you can enjoy the sun safely while exploring the lush beauty of Sao Tome and Principe.

Hourly UV Index in Sao Tome

The UV Index for today shows a clear pattern of rising intensity, peaking in the late morning and early afternoon. Starting at a gentle 2 at 07:00, the index quickly escalates to a significant 11 by 10:00 and reaches its maximum of 13 at both 11:00 and 12:00. As the sun begins to descend, the UV intensity drops steadily, tapering off to 4 at 15:00, and finally fading to 0 by 19:00. For those spending time outdoors, peak hours between 10:00 and 12:00 warrant attention, highlighting the need for proper sun protection during these crucial moments of the day.

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	2	low	45 min
08:00	4	moderate	30 min
09:00	8	very high	15 min
10:00	11	extreme	10 min
11:00	13	extreme	10 min
12:00	13	extreme	10 min
13:00	10	very high	15 min
14:00	7	high	25 min
15:00	4	moderate	30 min
16:00	1	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Sao Tome

The UV Index shows significant seasonal variations with extreme levels from January through April and in the fall months of August to October. High-risk months include January, February, March, April, September, October, and November, all classified as having an extreme exposure category, necessitating caution as the burn time is only 10 minutes during these periods. In contrast, June and July present a slightly lower very high exposure rating, with a burn time of 15 minutes. It is advisable for both visitors and residents to employ sun protection measures during these months, such as wearing sunscreen, hats, and sunglasses to prevent skin damage.

Monthly Maximum UV Index for Sao Tome, Sao Tome and Principe

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Sao Tome. 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 Sao Tome, 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 Sao Tome UV Index with Other Sao Tome and Principe Cities

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

Sao Tome's solar exposure compared to other cities in Sao Tome and Principe. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Santo Antonio UVI	12	12	14	14	13	11	10	11	13	13	12	11
Sao Tome	12	13	13	14	13	10	10	11	13	13	13	12
Sao Joao dos Angolares UVI	12	13	13	14	13	10	10	11	13	13	13	12
Trindade UVI	12	13	13	14	13	10	10	11	13	13	13	12
Guadalupe UVI	12	13	13	14	13	10	10	11	13	13	13	12