UV Index in Nanyuki, Kenya

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Nanyuki, Kenya, where the unique climate of the Csb zone contributes to varying levels of sun exposure. With peak UV levels reaching as high as 12 during midday, it’s essential to recognize the impact of ultraviolet radiation on skin health and the risk of sunburn. Being informed about UV levels can help you take the necessary precautions, allowing you to enjoy the stunning landscapes of Nanyuki while protecting your skin from potential harm. Stay sun-savvy and prioritize your well-being under the African sun!

Hourly UV Index in Nanyuki

As the sun rises, the UV Index begins its ascent, starting at a gentle 1 at 07:00 before gradually climbing to a moderate 2 by 08:00. The real intensity kicks in as the clock strikes 10:00, when the index reaches a noteworthy 7. By 11:00, it peaks at an extreme 10, and just after noon, it hits the highest point of the day at an impressive 12. This intense UV exposure continues until 13:00, where it remains steady at 12. As the afternoon progresses, the index starts to decline, dropping to 10 at 14:00, then tapering off to 7 by 15:00. The UV Index continues to decrease, reaching 4 at 16:00 and returning to a low of 1 by the evening, with the sun slipping below the horizon at 19:00, leaving a safe UV reading of 0.

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

Monthly UV Index Trends in Nanyuki

Throughout the year, the UV Index in our region consistently remains in the extreme category, with values ranging from 12 to 17. The months of January through April and September showcase the highest values, particularly February and March, which peak at 17, making these the highest risk months for skin damage. Visitors and residents are strongly advised to take precautions during these periods, such as seeking shade, wearing protective clothing, and applying high-SPF sunscreen if outdoor activities are unavoidable. Even in the relatively lower months of June through November, the UV risk remains elevated, with a continual burn time of just 10 minutes across all months. Staying vigilant is essential for health and safety throughout the year.

Monthly Maximum UV Index for Nanyuki, Kenya

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

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

Nanyuki's solar exposure compared to other cities in Kenya. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mombasa UVI	14	14	15	14	13	11	11	12	13	13	13	12
Kikuyu UVI	15	16	16	16	13	11	11	13	14	14	13	13
Ruiru UVI	15	16	16	16	13	11	11	13	14	14	13	13
Nairobi UVI	15	16	16	16	13	11	11	13	14	14	13	13
Nanyuki	16	17	17	16	14	12	13	13	15	14	14	14
Nakuru UVI	16	17	17	17	14	12	13	14	15	15	14	14