UV Index in Guadalupe, Sao Tome and Principe

Last updated: July 2, 2025

Awareness of the UV Index in Guadalupe, São Tomé and Príncipe is crucial for everyone, especially those who enjoy the island's sunny climate. Understanding UV levels helps protect your skin from harmful rays, preventing sunburn and long-term health issues. With a tropic climate that often exposes residents and visitors to intense sunlight, it's vital to stay informed about UV risks throughout the day. From the peak index of 10 around noon to its gradual decline in the afternoon, being mindful of these fluctuations can empower you to take necessary precautions and enjoy the beautiful island safely.

Hourly UV Index in Guadalupe

The UV Index shows a dynamic pattern throughout the day, peaking sharply around midday. Starting from a gentle 1 at 07:00, the UV exposure begins to rise, hitting 3 by 08:00. The real intensity kicks in at 09:00, where it reaches 6, and then surges to a striking 8 by 10:00. The index escalates further, reaching its pinnacle at 10 from 11:00 to 12:00. As the afternoon progresses, there's a gradual decline, dropping to 9 at 13:00 and tapering off to 6 by 14:00. By 15:00, the UV Index falls to 3, and it continues its descent, dropping back down to 1 by 16:00 and beyond. As the day winds down, the levels decrease significantly, reaching 0 after 18:00, indicating a safe period for outdoor activities without considerable sun exposure. 🌞

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	3	moderate	30 min
09:00	6	high	25 min
10:00	8	very high	15 min
11:00	10	very high	15 min
12:00	10	very high	15 min
13:00	9	very high	15 min
14:00	6	high	25 min
15:00	3	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 Guadalupe

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 Guadalupe, Sao Tome and Principe

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

The table above highlights how UV exposure in Guadalupe 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.

Guadalupe'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
Guadalupe	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
Sao Tome UVI	12	13	13	14	13	10	10	11	13	13	13	12