UV Index in Son La, Vietnam

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors in Son La, Vietnam, where the Cwa climate brings warm summers and intense sun exposure. Knowledge of UV levels can help you prevent sunburn, protect your skin health, and enjoy outdoor activities safely. During peak hours, notably between 10:00 AM and 2:00 PM, the UV Index can reach dangerously high levels, peaking at 14, which poses significant risks for skin damage. Stay informed and take necessary precautions to enjoy Son La's beautiful landscapes while safeguarding your health.

Hourly UV Index in Son La

As the sun rises, the UV Index steadily climbs, starting at a modest 2 by 7:00 AM. By 8:00 AM, it jumps to 4, signaling that it's time to apply some sunscreen. The intensity peaks at 14 around noon, making 11:00 AM and 12:00 PM crucial hours for sun protection. As the afternoon unfolds, the index gradually starts to decline: from 13 at 1:00 PM to 10 by 2:00 PM, before dipping down to 3 at 4:00 PM. As evening approaches, the UV exposure diminishes significantly, reaching 1 by 5:00 PM and tapering off to 0 by 7:00 PM. Stay safe and enjoy the sunshine, but remember to protect your skin during those peak hours!

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	14	extreme	10 min
13:00	13	extreme	10 min
14:00	10	very high	15 min
15:00	7	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 La

The seasonal UV Index data highlights significant fluctuations in sun exposure risk throughout the year. From January to April, the UV Index remains in the very high to extreme range, peaking at 14 in May through September, indicating high-risk months for sunburn risk with a burn time of only 10 minutes during this period. October sees a slight decrease to an index of 12, followed by a return to very high levels in November and December. Visitors and residents should take precautionary measures, especially from March to October, ensuring adequate sun protection such as wearing sunscreen, hats, and sunglasses to mitigate the risk of UV-related health issues.

Monthly Maximum UV Index for Son La, Vietnam

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

The table above highlights how UV exposure in Son La 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 La'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
Son La	8	10	13	13	14	14	14	14	14	12	9	8
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