UV Index in Nangwa, Tanzania

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Nangwa, Tanzania, where the sun's rays can be particularly intense, especially during midday hours. Being aware of UV levels helps in preventing sunburn and protecting skin health, vital for enjoying outdoor activities safely. With a tropical climate and a typical UV Index reaching as high as 14 at noon, the risk of skin damage increases significantly. Whether you're lounging under the sun or exploring the vibrant surroundings, knowing the UV Index empowers you to take the right precautions for a healthy, sun-smart lifestyle.

Hourly UV Index in Nangwa

The UV Index rises steadily through the morning, starting at a modest 1 at 07:00, but rapidly escalates to a peak of 14 by 12:00, highlighting the intensity of midday sun. As the day progresses, the index gradually declines, dipping back to 8 by 15:00 and settling at a low of 0 by 19:00. Notably, the most hazardous hours for sun exposure occur between 11:00 and 13:00, with values reaching 11 and 13, respectively. It's essential to stay protected during these peak hours to avoid harmful effects from UV radiation.

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	8	very high	15 min
11:00	11	extreme	10 min
12:00	14	extreme	10 min
13:00	13	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 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 Nangwa

The UV Index in the region indicates consistently extreme levels throughout the year, with particularly high readings from January to April where the index notably peaks at 17. The months of January through March are the highest risk, maintaining a UV Index of 16-17 and a dangerously short burn time of just 10 minutes. After April, values gradually decline yet remain significant, with readings ranging from 11 to 15 through November. As such, it is crucial for both visitors and residents to take extra precautions during these months, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak hours, especially from late morning to early afternoon.

Monthly Maximum UV Index for Nangwa, Tanzania

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

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

Nangwa's solar exposure compared to other cities in Tanzania. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Zanzibar UVI	14	14	14	14	12	10	10	12	13	13	13	13
Dar es Salaam UVI	14	14	15	14	12	10	10	12	13	13	13	13
Mwanza UVI	14	15	16	15	13	11	11	13	14	13	13	13
Arusha UVI	15	16	16	16	14	12	12	13	14	14	13	14
Mbeya UVI	16	16	16	16	13	11	11	13	14	14	14	15
Nangwa	16	17	17	16	14	11	12	14	15	14	14	15