UV Index in But Son, Vietnam

Last updated: August 1, 2025

In But Son, Vietnam, awareness of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you prevent sunburn and limit long-term damage caused by excessive sun exposure. With a tropical climate characterized by high humidity and intense sunlight, But Son residents and visitors face significant UV exposure risks, especially during peak hours when the index can soar to a notable 14 around noon. Stay informed and take the necessary precautions to safeguard your skin while enjoying the beautiful outdoors!

Hourly UV Index in But Son

At dawn, the UV Index starts softly at 2 by 07:00, suggesting a low risk for sun exposure. As the morning progresses, it escalates to 4 by 08:00 and reaches 7 at 09:00, indicating a moderate level of sun intensity. The day peaks with an impressive 14 at 12:00, where sun safety becomes crucial as the risk is rated high. Afternoon hours see a gradual decline from 13 at 13:00 down to 10 by 14:00, before dropping further to 6 at 15:00. As the sun begins to set, the UV Index dwindles to 3 by 16:00, and finally settles at 1 by 17:00 and 18:00, with a complete drop to 0 by 19:00, signaling that the sun's rays are no longer a concern. Always remember to protect your skin during those high UV periods!

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:003moderate30 min
09:007high25 min
10:0010very high15 min
11:0013extreme10 min
12:0014extreme10 min
13:0012extreme10 min
14:0010very high15 min
15:006high25 min
16:003moderate30 min
17:001low45 min
18:001low45 min
19:000low45 min

Monthly UV Index Trends in But Son

The UV Index demonstrates significant seasonal fluctuations, with the highest risks occurring during the summer months. From March through October, the UV Index rises to extreme levels, peaking at 14 in July, August, and September, where a mere 10 minutes of unprotected exposure can lead to skin damage. Conversely, January and February also present high risks with UV Index values of 8 and 10 respectively, while November reverts to very high at 9. Residents and visitors should take precautions, especially from March to October, by seeking shade, wearing protective clothing, and applying sunscreen to safeguard against harmful UV rays. During the winter months, although the risks decrease, it remains essential to remain vigilant, particularly in January and February.

Monthly Maximum UV Index for But Son, Vietnam

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in But Son. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec810121313131414141297
Data source: Statistical UV Index data for But Son, 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 But Son UV Index with Other Vietnam Cities

The table above highlights how UV exposure in But Son 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.
But Son's solar exposure compared to other cities in Vietnam. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Hanoi UVI810121213121213131197
Haiphong UVI810121312131313131197
But Son810121313131414141297
Da Nang UVI10121415141314141312109
Ho Chi Minh City UVI101315141412131413131110
Bien Hoa UVI101415151413141413121110