UV Index in Siwan, India

Last updated: June 2, 2025

Understanding the UV Index in Siwan, India is crucial for safeguarding your skin and overall health. With high UV exposure typically occurring from late morning to early afternoon, awareness of these levels can help prevent sunburn and long-term skin damage, making a proactive approach to sun safety essential. Siwan's Cwa climate contributes to varied sun intensity throughout the year, raising the risk of UV exposure during peak hours. By staying informed about the UV Index, residents and visitors can enjoy the sun responsibly while protecting their skin.

Hourly UV Index in Siwan

As the sun rises, the UV Index begins at a gentle 2 at 7:00 AM, slowly warming up to reach a moderate 4 by 8:00 AM. The intensity peaks spectacularly at 11:00 AM and 12:00 PM, both clocking in at a high 10, making these the most crucial hours for sun protection. Following this midday zenith, the index gradually declines, dipping to 8 at 1:00 PM, and further softening to 6 by 2:00 PM. As the afternoon unfolds, the UV Index descends to 3 by 3:00 PM, indicating a gentle easing before settling at a minimal 1 by 5:00 PM. The day closes with a safe 0 by 7:00 PM, signaling the end of the sun's harmful rays. Be sure to protect your skin during those peak hours to enjoy the outdoors safely!

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	6	high	25 min
10:00	8	very high	15 min
11:00	10	very high	15 min
12:00	10	very high	15 min
13:00	8	very high	15 min
14:00	6	high	25 min
15:00	3	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Siwan

As the seasons change, so do UV index levels, significantly impacting burn times and exposure risks. January and December see a moderate UV Index of 5, with a burn time of 30 minutes. By February, the index climbs to 6, categorized as high, reducing safe exposure to 25 minutes. The spring months quickly escalate, with March and April reaching a very high index of 8 and 10, respectively, with critical burn times decreasing to just 15 minutes. The peak summer months of July, August, and September are particularly dangerous, featuring an extreme UV index of 12 and 11, with an alarming burn time of only 10 minutes. As autumn approaches in October, the index remains high at 9, then falls again in November. To protect yourself, especially during the high-risk months from March to September, use sunscreen, wear protective clothing, and stay in the shade during peak hours.

Monthly Maximum UV Index for Siwan, India

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

The table above highlights how UV exposure in Siwan 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.

Siwan'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
Siwan	5	6	8	10	10	10	12	11	11	9	6	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