UV Index in Hoai An, Vietnam

Last updated: July 2, 2025

Awareness of the UV Index in Hoai An, Vietnam, is crucial for maintaining skin health and preventing sunburns. Understanding UV levels allows residents and visitors to take protective measures during peak sun exposure hours, particularly when the index soars to a maximum of 15 around noon. Hoai An enjoys a humid subtropical climate that brings abundant sunshine, making it vital to stay informed about UV risks to enjoy the outdoors safely. As you explore this vibrant region, keeping an eye on the UV Index can help protect your skin while ensuring a great time under the sun.

Hourly UV Index in Hoai An

As the sun rises, the UV Index begins its ascent, starting at a low 2 at 7:00 AM. By 8:00 AM, it doubles to 4, signaling the need for some sun protection. As the day progresses, the intensity of ultraviolet rays intensifies dramatically, peaking at a high of 15 at 12:00 PM. This period marks the height of UV exposure, making it crucial to stay shaded or protected. The index gradually declines after 1:00 PM, with readings of 13 and then 9 at 2:00 PM, before tapering off to 6 by 3:00 PM, and sinking to a mere 1 by 5:00 PM. Finally, the UV exposure diminishes to 0 after 7:00 PM, closing out the day as the sun sets. Remember, during those peak hours, protect yourself from harmful rays to ensure a safe and enjoyable day!

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	15	extreme	10 min
13:00	13	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 Hoai An

The UV Index shows significant seasonal changes, with extreme exposure risks persisting from January through October. Notably, the months of March, April, May, July, and August maintain a high UV Index of 15, representing a period of particularly intense sun exposure. Visitors and residents should exercise caution during these high-risk months; with an average burn time of just 10 minutes, it is crucial to take protective measures such as wearing sunscreen, hats, and UV-protective clothing. In contrast, the UV Index decreases slightly in November and December, but even then, precautions are advised as the index remains at a very high level in December. Staying vigilant about sun protection will help ensure safety throughout the year.

Monthly Maximum UV Index for Hoai An, Vietnam

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

The table above highlights how UV exposure in Hoai An 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.

Hoai An'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
Hoai An	11	13	15	15	15	13	15	15	14	13	11	9