UV Index in Sia, Vietnam

Last updated: June 2, 2025

Understanding the UV Index in Sia, Vietnam is crucial for protecting your skin and overall health. With the region's tropical climate and high UV exposure levels, especially between 10 AM and 2 PM when the index peaks at a striking 13, awareness is your first line of defense against sunburn and long-term skin damage. Monitoring the UV levels allows residents and visitors to make informed decisions about sun protection, ensuring they enjoy the beautiful Sia outdoors safely. Whether you're planning a day at the beach or a leisurely stroll, knowing the UV Index can significantly enhance your sun safety strategy.

Hourly UV Index in Sia

The UV Index for the day reveals a dramatic peak in intensity around midday. Starting at 7:00 AM with a moderate level of 2, the index swiftly climbs, hitting **4 by 8:00 AM and reaching a notable 7 by 9:00 AM. The UV exposure escalates rapidly, peaking at a striking 13 by 11:00 AM and maintaining this high level until 12:00 PM. After this peak, the index experiences a gradual decline: dropping to 11 at 1:00 PM and decreasing further to 5 by 3:00 PM. As the day winds down, UV levels fall to 3 at 4:00 PM before settling at a minimal 1 by 5:00 PM. The UV Index finally tapers off to 0 as evening approaches, emphasizing the importance of sun protection during the most intense hours 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	7	high	25 min
10:00	11	extreme	10 min
11:00	13	extreme	10 min
12:00	13	extreme	10 min
13:00	11	extreme	10 min
14:00	8	very high	15 min
15:00	5	moderate	30 min
16:00	3	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 Sia

The UV Index demonstrates significant seasonal variation, with the highest values occurring from February to October, peaking at 14 during April, May, July, and August, all classified under the extreme exposure category. Notably, March through October consistently shows an extreme risk of UV exposure, with a burn time as short as 10 minutes. January and November revert to a very high exposure category, allowing for slightly longer burn times of 15 minutes. Residents and visitors should exercise caution during these high-risk months, ensuring adequate sun protection such as hats, sunglasses, and sunscreen, particularly during the midday hours when UV radiation is most intense. Adopting these precautions is essential to avoid harmful effects from prolonged sun exposure.

Monthly Maximum UV Index for Sia, Vietnam

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

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

Sia's solar exposure compared to other cities in Vietnam. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Hanoi UVI	8	10	12	12	13	12	12	13	13	11	9	7
Haiphong UVI	8	10	12	13	12	13	13	13	13	11	9	7
Sia	10	12	13	14	14	13	14	14	13	12	10	9
Da Nang UVI	10	12	14	15	14	13	14	14	13	12	10	9
Ho Chi Minh City UVI	10	13	15	14	14	12	13	14	13	13	11	10
Bien Hoa UVI	10	14	15	15	14	13	14	14	13	12	11	10