UV Index in Kisumu, Kenya

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Kisumu, Kenya, where the sun shines brightly and consistently due to its tropical climate. With UV levels peaking around midday, awareness of these readings can significantly aid in sunburn prevention and overall skin health. On typical days, Kisumu experiences elevated UV exposure risks, especially between 11 AM and 1 PM when the index can soar as high as 12, indicating a very high risk of harm from unprotected sun exposure. Staying informed about the UV Index empowers you to enjoy the outdoors safely while maintaining healthy skin.

Hourly UV Index in Kisumu

The UV Index throughout the day reveals a dynamic shift in sun strength. Starting off with a gentle maximum of 1 at both 07:00 and 08:00, the intensity begins to rise, reaching a moderate level of 3 by 09:00. As the clock strikes 10:00, the index leaps to 6, and by 11:00, it surges to 9, indicating increasing caution is needed. The day peaks at a scorching 11 at 12:00 and reaches its zenith with an astounding 12 at 13:00. A gradual decline follows, with levels dropping to 10 at 14:00, then 7 at 15:00, and finally settling back to 4 at 16:00. As the sun starts to set, the index plummets to 2 at 17:00, then quiets to 1 by 18:00, before dropping to 0 at 19:00. Be sure to take care during those peak hours!

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	1	low	45 min
09:00	3	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	11	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	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Kisumu

Throughout the year, the UV Index remains extremely high, with values consistently ranging from 11 to 16. January to April marks the highest risk months, where the UV Index reaches up to 16, indicating a peak burn time of just 10 minutes. Even during the warmer months like July and August, the index remains concerning at 12, necessitating caution. As the UV Index decreases slightly in October, November, and December to 13, the burn time remains critically low. Residents and visitors are strongly advised to take protective measures against UV exposure year-round, including wearing sunscreen, protective clothing, and hats, and seeking shade during peak sunlight hours. Staying educated about UV risk is essential to ensure safety in outdoor activities.

Monthly Maximum UV Index for Kisumu, Kenya

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

The table above highlights how UV exposure in Kisumu 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.

Kisumu'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
Kisumu	15	15	16	15	13	11	12	12	14	13	13	13
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
Nakuru UVI	16	17	17	17	14	12	13	14	15	15	14	14