UV Index in Changtan, China

Last updated: July 2, 2025

In Changtan, China, being aware of the UV Index is crucial for ensuring skin health and preventing sunburn, especially in a region characterized by its humid subtropical climate. Understanding UV levels not only helps you protect your skin from harmful effects but also informs outdoor activities, particularly during peak hours when the index soars to a maximum of 13 around midday. With UV exposure risks significantly escalating by mid-morning and lasting into the early afternoon, residents and visitors alike should stay informed to safeguard their well-being while enjoying the beautiful Changtan environment.

Hourly UV Index in Changtan

The UV Index today showcases a dramatic rise in solar intensity as the day progresses. Starting gently at 1 at 07:00, it climbs steadily, reaching 2 by 08:00. The real peak occurs between 11:00 and 13:00, where it soars to a blistering 13—indicative of heightened sun exposure risk. Post noontime, the index begins to taper off, with values descending to 9 at 15:00 and further down to 3 by 17:00. As evening approaches, the UV Index drops back to 1 by 18:00 and remains there until 19:00. For outdoor enthusiasts, it's essential to keep in mind the midday hours for optimal sun safety!

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	2	low	45 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	11	extreme	10 min
15:00	9	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Changtan

Throughout the year, the UV Index shows significant seasonal variations, with the highest levels occurring from April to September. During this period, the index reaches extreme levels, peaking in July at 13. The high-risk months for sun exposure include March through September, where the burn time drastically decreases; for example, in March it is only 15 minutes, and by April to September, it shortens to just 10 minutes. Conversely, January, February, and November present high but less intense UV exposures, with burn times of 25 minutes. Visitors and residents are advised to take precautionary measures during high UV months by seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen to minimize skin damage. Remember, even on cloudier days, UV rays can still cause harm!

Monthly Maximum UV Index for Changtan, China

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

The table above highlights how UV exposure in Changtan compares to other major locations across China. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Changtan's solar exposure compared to other cities in China. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Beijing UVI	2	3	5	8	9	9	10	9	7	6	4	2
Chengdu UVI	5	6	8	10	12	11	11	10	11	8	6	4
Shanghai UVI	5	6	8	10	10	11	12	11	11	8	6	4
Changtan	6	7	9	11	11	12	13	12	11	9	7	5
Guangzhou UVI	7	9	11	12	13	13	13	12	11	10	9	7
Shenzhen UVI	7	10	12	12	14	13	13	13	12	11	9	7