UV Index in Hai Rieng, Vietnam

Last updated: August 1, 2025

Understanding the UV Index is essential for residents and visitors of Hai Rieng, Vietnam, where the tropical climate brings extensive sun exposure. Knowledge of UV levels not only aids in preventing painful sunburn but also protects long-term skin health by minimizing the risk of skin conditions. With UV Index values peaking dramatically at 14 during midday, Hai Rieng's sunny days pose significant risks for overexposure. Staying informed about this vital information will help you enjoy the outdoors safely while embracing the beauty of this vibrant region.

Hourly UV Index in Hai Rieng

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	12	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	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 Hai Rieng

The UV Index shows significant seasonal variations, with extreme exposure levels persisting from January to October, peaking at 16 in both March and April, which are the high-risk months for sunburn with a quick burn time of just 10 minutes. As we move into November, the UV Index decreases to 11, followed by December at 10, where the exposure is categorized as very high, extending the burn time to 15 minutes. Visitors and residents are strongly advised to take precautionary measures year-round, especially during the high-risk months of March and April, by using sunscreen, wearing protective clothing, and seeking shade to minimize the risk of skin damage.

Monthly Maximum UV Index for Hai Rieng, Vietnam

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

The table above highlights how UV exposure in Hai Rieng 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.

Hai Rieng'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
Hai Rieng	11	13	16	16	15	13	14	14	14	13	11	10