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UV Index in Nairobi, Kenya

Last updated: July 2, 2025

Understanding the UV Index in Nairobi, Kenya is crucial for safeguarding your skin’s health and preventing sunburn. As East Africa's vibrant capital sits at a high altitude, residents and visitors alike are at increased risk of harmful UV rays, especially during the midday hours when levels peak at an extreme 11. With a typical Cfb climate, Nairobi experiences varied weather, but the risks associated with high UV exposure remain consistent. By staying informed about UV levels, you can make proactive choices to protect yourself and enjoy the sun safely, ensuring your skin remains healthy and unblemished.

Hourly UV Index in Nairobi

The UV Index reveals an exciting yet cautionary tale of sun exposure throughout the day. Early risers will find gentle UV levels at 1 from 7:00 AM to 8:00 AM, perfect for a leisurely breakfast outdoors. As the sun climbs higher, the index surges past 3 at 9:00 AM and peaks dramatically at 11 by 12:00 PM, signaling a prime time for sun protection. The intensity remains elevated with another 11 at 1:00 PM, making midday a critical window for sunscreen and shade. The UV levels then gracefully descend, slipping to 9 at 2:00 PM and tapering down through the afternoon, reaching back to 1 by 6:00 PM, before finally winding down to 0 after sunset at 7:00 PM. It’s a vivid reminder to balance enjoyment in the sun with safety!

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:001low45 min
09:003moderate30 min
10:006high25 min
11:009very high15 min
12:0011extreme10 min
13:0011extreme10 min
14:009very high15 min
15:007high25 min
16:004moderate30 min
17:002low45 min
18:001low45 min
19:000low45 min

Monthly UV Index Trends in Nairobi

The UV Index experiences extreme levels throughout the year, with consistently high readings from January to April (ranging from 15 to 16) and only slightly lower values during May to July (11 to 13). The high-risk months extend from January to April, where the UV Index remains at its peak, and even later months like August to October still show considerable risk. Visitors and residents are strongly advised to take precautions during these months by wearing sunscreen, protective clothing, and seeking shade during peak hours. With a uniform burn time of just 10 minutes across all months, it is crucial to remain vigilant to prevent skin damage throughout the year.

Monthly Maximum UV Index for Nairobi, Kenya

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Nairobi. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec151616161311111314131313
Data source: Statistical UV Index data for Nairobi, 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 Nairobi UV Index with Other Kenya Cities

The table above highlights how UV exposure in Nairobi 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.
Nairobi's solar exposure compared to other cities in Kenya. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mombasa UVI141415141311111213131312
Nairobi151616161311111314141313
Kikuyu UVI151616161311111314141313
Ruiru UVI151616161311111314141313
Nakuru UVI161717171412131415151414