UV Index in Son Ha, Vietnam

Last updated: July 2, 2025

Understanding the UV Index in Son Ha, Vietnam is essential for protecting your skin and overall health. With peak UV levels reaching a significant 14 around midday, being aware of these fluctuations can help you take necessary precautions against sunburn and long-term skin damage. The humid subtropical climate typical of Son Ha amplifies UV exposure, especially during the hotter parts of the day. By staying informed about UV levels, you can enjoy the beautiful outdoors safely while minimizing the risks associated with sun exposure.

Hourly UV Index in Son Ha

As the sun rises, the UV Index begins its ascent, starting at a mild 2 by 7:00 AM. By 8:00 AM, it ramps up to 4, signaling the need for light sun protection. The real intensity kicks in around 9:00 AM, peaking at a robust 11 between 10:00 AM and 12:00 PM, when it reaches its highest point of 14. During these hours, it’s essential to find shade and apply sunscreen to shield yourself from harmful rays. As the afternoon progresses, the UV Index gradually declines, dropping to 12 at 1:00 PM before easing to 6 by 3:00 PM, and finally dipping to a low of 1 by 5:00 PM, signaling a retreat from the sun as daylight fades. This data emphasizes the importance of midday sun safety, ensuring maximum protection during the peak UV 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	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	14	extreme	10 min
12:00	14	extreme	10 min
13:00	12	extreme	10 min
14:00	9	very high	15 min
15:00	6	high	25 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 Son Ha

The UV Index demonstrates a notable trend of extreme levels throughout much of the year, particularly from January to October, with extreme exposure categories consistently recorded at 11 to 15. The highest risk months are March through September, where the UV Index peaks at 15 in March and April, indicating an urgent need for protection against harmful UV rays. Residents and visitors are strongly advised to take precautionary measures such as wearing sunscreen, protective clothing, and sunglasses during these high-risk months, as burn time is alarmingly low at just 10 minutes across these peak months. In December, the UV Index decreases to 9, classified as very high with a slightly extended burn time of 15 minutes, yet vigilance remains essential year-round to protect skin health.

Monthly Maximum UV Index for Son Ha, Vietnam

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

The table above highlights how UV exposure in Son Ha 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.

Son Ha'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
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
Son Ha	11	12	15	15	14	13	14	14	14	12	11	9