UV Index in Nyanza, Rwanda

Last updated: August 1, 2025

Understanding the UV Index in Nyanza, Rwanda, is crucial for safeguarding your skin and overall health. With the region's Aw climate, characterized by both sun and seasonal rainfall, UV exposure can vary greatly throughout the day. The UV levels in Nyanza can peak at a staggering 12 around midday, emphasizing the need for awareness to prevent sunburn and long-term skin damage. By keeping an eye on the UV Index, residents can take proactive measures to protect themselves from harmful rays, ensuring enjoyable outdoor activities without compromising their skin health.

Hourly UV Index in Nyanza

The UV Index throughout the day reveals a dynamic range of solar intensity, peaking at 12 around noon. Starting the day gently, the index registers a low 1 at 7:00 AM, gradually rising to 2 by 8:00 AM. As the sun climbs higher, it reaches 5 by 9:00 AM, then surges to a robust 11 by 11:00 AM, signaling higher caution for outdoor activities. The peak at midday is a daunting 12, urging everyone to seek shade and wear protective gear. The intensity begins to taper off in the afternoon, dropping back to 8 at 2:00 PM and further to 5 by 3:00 PM. By the late afternoon, the index drops significantly to 1 at 5:00 PM and settles at 0 by 6:00 PM, giving a gentle reminder that the sun's might can vary dramatically throughout the day.

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	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	12	extreme	10 min
14:00	9	very high	15 min
15:00	6	high	25 min
16:00	3	moderate	30 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Nyanza

The UV Index exhibits significant seasonal changes, predominantly remaining in the extreme exposure category throughout the year. The highest indices are recorded from February to March, peaking at 17 in March, while values gradually decline to 12 by June and July. October sees a slight increase to 13, which persists through December. High-risk months for sun exposure are primarily from February to March, making it crucial for visitors and residents to take preventive measures. We advise everyone to wear protective clothing, use sunscreen, and seek shade whenever possible, particularly during peak UV hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Nyanza, Rwanda

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

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

Nyanza's solar exposure compared to other cities in Rwanda. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Gisenyi UVI	15	16	16	16	14	12	11	13	14	13	13	13
Kigali UVI	15	16	16	15	14	12	12	13	14	13	13	13
Gitarama UVI	15	16	16	16	14	12	12	13	14	13	13	13
Nyanza	14	16	17	16	14	12	12	13	15	13	13	13
Butare UVI	14	16	17	16	14	12	12	13	15	13	13	13
Musanze UVI	15	16	17	16	14	12	12	13	14	14	13	14