UV Index in Thong Nhat, Vietnam

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents and visitors in Thong Nhat, Vietnam, where the tropical climate brings about significant sun exposure, especially during peak hours. With UV levels reaching an alarming 14 around noon, being aware of these metrics is essential for preventing sunburn and protecting your skin health. By understanding the UV levels throughout the day—ranging from a mild 1 at sunrise to a maximum of 13 in the afternoon—you can take necessary precautions to enjoy the beautiful climate while safeguarding against potential skin damage. Stay informed, stay sun-safe!

Hourly UV Index in Thong Nhat

The UV Index during the day showcased a dynamic shift, beginning at a low 1 at 07:00, then escalating to a moderate 4 by 08:00. As the sun climbed higher, the intensity peaked at a formidable 14 around 12:00, marking it as the most intense hour of the day. Following this, the index gradually descended, hitting 12 at 13:00, before tapering off to 9 at 14:00. The afternoon witnessed a noticeable decline, with values plummeting to 5 by 15:00, and further reducing to 3 at 16:00. As evening approached, the UV Index dwindled to 1 by 17:00, tapering off to 0 by 19:00. This data underscores the importance of sun safety during the midday hours, when the UV levels are notably elevated.

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	1	low	45 min
08:00	4	moderate	30 min
09:00	7	high	25 min
10:00	11	extreme	10 min
11:00	14	extreme	10 min
12:00	14	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 Thong Nhat

The UV Index exhibits extreme levels from January through April, peaking at 16 in March, indicating a significant risk for skin damage with a burn time of just 10 minutes across these months. The trend remains high until May and June, where the Index slightly decreases but continues to maintain an extreme classification. While July and August preserve a UV Index of 14, the intensity of sunlight begins to lessen by September and continues through October. By December, the UV Index drops to 10, categorized as very high with a longer burn time of 15 minutes. Visitors and residents should take precautions, especially during the high-risk months of January to May, ensuring they wear protective clothing, apply sunscreen frequently, and seek shade to minimize UV exposure.

Monthly Maximum UV Index for Thong Nhat, Vietnam

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

The table above highlights how UV exposure in Thong Nhat 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.

Thong Nhat'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
Thong Nhat	11	14	16	15	14	13	14	14	13	13	11	10