UV Index in Guwahati, India

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Guwahati, India, especially given its tropical climate characterized by high humidity and frequent sunshine. Awareness of UV levels not only helps in preventing sunburn but is also vital for long-term skin health by reducing the risk of skin cancer. On a typical day, Guwahati experiences varying UV intensity, peaking at 11 around midday, which poses significant risks for unprotected skin. As you navigate the sunny streets of this vibrant city, staying informed about the UV Index can empower you to enjoy the outdoors safely while protecting your skin.

Hourly UV Index in Guwahati

The UV Index today demonstrates a clear peak of intensity around midday. Starting at 4 by 07:00, it climbs steadily, reaching 6 by 08:00, before making a significant leap to 9 at 09:00. The sun’s power culminates at 11 from 10:00 to 11:00, marking the highest exposure levels of the day. After this peak, the UV Index begins to decline, dipping to 10 at 12:00, then gradually falling to 7 by 13:00 and further decreasing to 5 at 14:00. Later in the afternoon, it drops off sharply, hitting 2 at 15:00 and dwindling to 1 by 16:00 and 17:00, before finally settling at 0 by 18:00. To stay safe under the sun, it’s crucial to take precautions during the hours of highest UV exposure, particularly between 10:00 and 11:00.

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	4	moderate	30 min
08:00	6	high	25 min
09:00	9	very high	15 min
10:00	11	extreme	10 min
11:00	11	extreme	10 min
12:00	10	very high	15 min
13:00	7	high	25 min
14:00	5	moderate	30 min
15:00	2	low	45 min
16:00	1	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Guwahati

Throughout the year, the UV Index in our region experiences notable fluctuations, reaching its peak during the summer months. High-risk months include March to September, where the UV Index tends to hit 8 or higher, indicating very high to extreme levels of exposure. Specifically, May through August presents the greatest concern, with indices often at 11 or above, necessitating caution. Residents and visitors are strongly advised to take protective measures during these months, such as wearing sunscreen, protective clothing, and seeking shade, particularly during midday hours. In contrast, the UVI drops to a more moderate level in January, December and November, allowing for safer outdoor activities during these cooler months.

Monthly Maximum UV Index for Guwahati, India

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

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

Guwahati's solar exposure compared to other cities in India. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Delhi UVI	5	6	9	10	10	10	12	12	9	8	5	5
Guwahati	5	7	8	9	11	12	13	12	11	9	7	5
Mumbai UVI	8	9	10	11	11	12	13	13	11	10	7	7
Ahmedabad UVI	7	8	10	12	11	12	13	13	11	10	7	6
Hyderabad UVI	10	11	12	11	13	13	15	14	13	11	8	8
Bengaluru UVI	11	13	13	14	13	14	14	14	14	12	11	10