UV Index in Aileu, Timor-Leste

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Aileu, Timor-Leste, as it plays a vital role in preventing sunburn and promoting skin health. With its tropical climate in the Aw climate zone, Aileu experiences fluctuating UV levels throughout the day, peaking at an alarming 12 between noon and 1 PM. Being aware of these levels can help you take necessary precautions, ensuring safety during outdoor activities and reducing long-term skin damage. Stay informed and protect yourself from the sun's harmful rays!

Hourly UV Index in Aileu

At dawn, the UV Index begins its day at a modest 1 around 07:00, signaling a relatively safe time for sun exposure. As the sun climbs higher, there’s a noticeable surge in intensity, with the index climbing to 3 by 09:00. The peak occurs between 12:00 and 13:00, where it reaches a scorching 12, indicating a high risk of harm from unprotected sun exposure. However, as the afternoon wanes, the intensity gradually declines, dropping to 4 by 16:00. By 19:00, it’s back down to a safe 0, marking the end of a spectrum that demands attention for sun safety. Whether basking in the sun or seeking shade, being mindful of these UV levels can ensure a healthier day outdoors.

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

Monthly UV Index Trends in Aileu

Throughout the year, the UV Index remains consistently high, with values peaking at 16 from January to March, as well as in September and October. These months, along with April and November, classified as extreme exposure categories, indicate that sunburn can occur in as little as 10 minutes of unprotected sun exposure. May, June, July, and August show slightly lower, yet still significant, UV indices, ranging from 11 to 13, maintaining an extreme risk level. Given these persistent conditions, it is crucial for both visitors and residents to take proactive sun protection measures, such as wearing broad-spectrum sunscreen, protective clothing, and seeking shade during peak sun hours. Staying informed and vigilant can significantly reduce the risk of UV-related health issues.

Monthly Maximum UV Index for Aileu, Timor-Leste

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Aileu. 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 Aileu, 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 Aileu UV Index with Other Timor-Leste Cities

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

Aileu's solar exposure compared to other cities in Timor-Leste. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Likisa UVI	15	16	16	14	12	11	12	13	16	16	15	14
Dili UVI	15	16	16	14	12	11	12	13	16	16	15	14
Suai UVI	15	16	16	14	12	10	11	13	16	16	15	15
Maliana UVI	15	16	16	14	12	11	12	13	16	16	15	14
Aileu	16	16	16	15	12	11	12	13	16	16	15	15