UV Index in Katumba, Tanzania

Last updated: August 1, 2025

In Katumba, Tanzania, being aware of the UV Index is essential for safeguarding your skin and overall health from harmful sun exposure. Understanding UV levels helps you prevent sunburn and long-term skin damage, which can lead to more serious health issues down the line. Katumba's Cwb climate is characterized by its distinct wet and dry seasons, but during peak hours, particularly between 11:00 AM and 1:00 PM, UV levels can soar to an extreme rating of 11. This underscores the importance of staying informed about daily UV forecasts to protect yourself and enjoy the beautiful outdoors safely.

Hourly UV Index in Katumba

The UV Index today begins its climb gently at 1 early in the morning, peaking as the sun reaches higher into the sky. By 09:00, it registers a moderate 3, but from 10:00 onwards, the intensity escalates sharply, hitting 5 and then soaring to a remarkable 11 by noon. The peak persists through 13:00, holding steady at 11, a clear signal to take sun protection seriously. As the afternoon unfolds, the index gradually recedes, dropping to 10 at 14:00, and further declining to 7 by 15:00. The UV Index continues to diminish as the day winds down, settling at 4 by 16:00, then slipping to 2 at 17:00, and finally returning to a safe 1 by 18:00. The day ends on a low note of 0 at 19:00, providing a much-needed respite from the sun’s rays. Stay protected 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	7	high	25 min
11:00	10	very high	15 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	5	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 Katumba

From January to April, the UV Index remains extremely high at 16, indicating a significant risk of harm from unprotected sun exposure, with a burn time of just 10 minutes. Although May to July see a slight decrease to 13 and 11, the risk remains categorized as extreme, maintaining a burn time of 10 minutes. In August, the UV Index climbs back to 13, followed by a gradual increase to 14 from September through November, and returning to 16 in December. Visitors and residents should exercise utmost caution during these high-risk months, particularly from January through April and during the late fall and winter months. It is advisable to wear protective clothing, use sunscreen, and seek shade to minimize UV exposure, regardless of the season.

Monthly Maximum UV Index for Katumba, Tanzania

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

The table above highlights how UV exposure in Katumba 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.

Katumba'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
Katumba	16	16	16	16	13	11	11	13	14	14	14	16
Mbeya UVI	16	16	16	16	13	11	11	13	14	14	14	15