UV Index in Rach Gia, Vietnam

Last updated: August 1, 2025

Understanding the UV Index is essential for residents and visitors of Rach Gia, Vietnam, where the tropical climate brings high levels of sun exposure, particularly during peak hours. The UV Index varies throughout the day, reaching a maximum of 14 around noon—significantly increasing the risk of sunburn and long-term skin damage. By being aware of these UV levels, you can take preventive measures to protect your skin and enjoy the sunny weather safely. Rach Gia's typical climate is characterized by warmth and humidity, making it crucial to stay informed about potential hazards from sunlight and adapt your outdoor activities accordingly.

Hourly UV Index in Rach Gia

As the sun rises, the UV Index begins its ascent, starting at a mild 1 at 07:00. By 08:00, it climbs to 3, indicating a cautious need for sun protection. The real intensity kicks in by 09:00, reaching 6, and peaks at a striking 14 at 12:00—the hour when the sun is at its zenith. With readings of 13 still prevalent from 11:00 to 13:00, it’s a vital time to stay protected! As afternoon settles in, the UV levels gradually taper off; they dip to 6 by 15:00 and descend further to 3 at 16:00. By evening, the risk diminishes significantly with a return to 1 at 17:00, rounding off the day as twilight approaches with a 0 reading by 19:00. Stay safe in the sun!

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
09:006high25 min
10:0010very high15 min
11:0013extreme10 min
12:0014extreme10 min
13:0013extreme10 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 Rach Gia

Throughout the year, seasonal UV changes show a significant variation, with the highest UV Index occurring from February to September, where it consistently reaches 14 or 15, placing these months in the extreme exposure category with a burn time of only 10 minutes. Notably, March to August represent high-risk months, characterized by intense UV radiation that demands caution from both visitors and residents. During these periods, it is crucial to take protective measures such as wearing sunscreen, protective clothing, and sunglasses, and to seek shade whenever possible. As the year progresses into October and November, while the UV Index decreases slightly, it remains essential to maintain awareness and protection, especially as the burn time remains limited to 10 minutes. Overall, continual vigilance against UV exposure is recommended year-round.

Monthly Maximum UV Index for Rach Gia, Vietnam

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Rach Gia. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec111415141413141414131111
Data source: Statistical UV Index data for Rach Gia, 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 Rach Gia UV Index with Other Vietnam Cities

The table above highlights how UV exposure in Rach Gia 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.
Rach Gia's solar exposure compared to other cities in Vietnam. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Hanoi UVI810121213121213131197
Haiphong UVI810121312131313131197
Da Nang UVI10121415141314141312109
Ho Chi Minh City UVI101315141412131413131110
Bien Hoa UVI101415151413141413121110
Rach Gia101415141413141414131111