UV Index in Gangtok, India

Last updated: July 2, 2025

Understanding the UV Index is crucial for the residents and visitors of Gangtok, India, where the unique climate can lead to high sun exposure. With UV levels peaking at 14 around midday, awareness of these fluctuations is essential for preventing sunburn and protecting skin health. Gangtok's climate, categorized as Cwb (temperate with dry winters), typically exposes individuals to heightened UV radiation due to its elevation and geographical features. By staying informed about the UV Index, you can enjoy the beautiful landscapes of Gangtok while effectively safeguarding your skin against harmful rays.

Hourly UV Index in Gangtok

The UV Index data reveals a dramatic rise in sun intensity as the day progresses. Starting at a moderate level of 4 at 07:00, the UV Index peaks at a scorching 14 by 11:00. From there, it begins to wane, dropping to 4 by 15:00. As the day wears on, the UV Index declines steadily, hitting zero by 19:00, indicating safe conditions as the sun sets. It's crucial to take precautions during peak hours, especially between 10:00 and 14:00, when the risk of skin damage is greatest. Stay sun-safe and enjoy the daylight wisely!

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	7	high	25 min
09:00	10	very high	15 min
10:00	13	extreme	10 min
11:00	14	extreme	10 min
12:00	13	extreme	10 min
13:00	11	extreme	10 min
14:00	7	high	25 min
15:00	4	moderate	30 min
16:00	2	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 Gangtok

Throughout the year, UV Index levels exhibit significant seasonal variations, with the highest risk months occurring from March to September, when values peak at 14 during the summer months. Visitors and residents should take particular caution during this period, especially in April, May, June, July, and August, where the burn time dramatically decreases to just 10 minutes under extreme conditions. As the year progresses, the UV Index gradually declines, moving to very high levels in October and November with burn times of 15 minutes, before dropping to moderate and high levels in January and December. Therefore, it is crucial for individuals to employ sun protection strategies—such as sunscreen, hats, and protective clothing—during high and extreme UV Index months to minimize the risk of skin damage.

Monthly Maximum UV Index for Gangtok, India

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

The table above highlights how UV exposure in Gangtok 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.

Gangtok'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
Gangtok	5	7	9	11	12	14	14	14	12	10	8	6
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