UV Index in Chiba, China

Last updated: August 1, 2025

In Chiba, China, understanding the UV Index is crucial for protecting your skin and overall health. With UV levels peaking at midday, awareness can help prevent painful sunburns and long-term skin damage. Chiba's Cwb climate, characterized by warm summers and mild winters, exposes residents and visitors to significant UV radiation, especially during summer months. By keeping an eye on the UV Index, you can make informed decisions about sun protection, ensuring enjoyable outdoor experiences while safeguarding your skin.

Hourly UV Index in Chiba

Throughout the day, the UV Index experiences a dynamic shift, peaking at an impressive 13 between 1 PM and 2 PM, indicating a high risk of harm from unprotected sun exposure. The morning starts gently, with a UV Index of 1 at 7 AM, gradually rising to 4 by 9 AM. As the sun inches higher, the intensity increases sharply, reaching 10 by 11 AM and soaring to 12 by noon. Post-peak, the index begins to decline, dropping to 10 at 3 PM, before settling back to a mild 2 by 6 PM. This clear progression emphasizes the importance of sun protection during the midday hours when the UV Index is at its highest. Enjoy the sunshine, but remember to stay safe! ☀️

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	4	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	12	extreme	10 min
13:00	12	extreme	10 min
14:00	12	extreme	10 min
15:00	9	very high	15 min
16:00	6	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Chiba

The UV Index exhibits significant seasonal variation, with the highest levels typically occurring from February to September, during which time the risk of UV exposure is considerably elevated. February, March, April, May, June, July, and August are classified as very high to extreme, with burn times ranging from 10 to 15 minutes. The peak UV Index of 13 occurs in April, May, June, and July, highlighting these months as particularly hazardous for sun exposure. September and October remain high-risk months with an index of 12 and 9, respectively, requiring continued caution. Conversely, the UV Index decreases during the cooler months of November and December, where it is categorized as high to moderate. Visitors and residents are strongly advised to take protective measures, such as seeking shade, wearing protective clothing, and applying sunscreen, especially during the high-risk months to minimize the risk of sunburn and long-term skin damage.

Monthly Maximum UV Index for Chiba, China

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

The table above highlights how UV exposure in Chiba 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.

Chiba'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
Chiba	5	8	9	13	13	13	13	12	12	9	6	4
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