UV Index in Geiro, Tanzania

Last updated: July 2, 2025

Understanding the UV Index in Geiro, Tanzania is crucial for everyone looking to protect their skin from the sun's harmful effects. With peak UV levels reaching a staggering 11 during midday hours, awareness of these levels can significantly reduce the risk of sunburn and long-term skin health issues. The region's Aw climate contributes to higher UV exposure, making it essential to check the UV Index regularly. Whether you're enjoying outdoor activities or simply soaking in the sun, staying informed about the UV Index can help you take necessary precautions to safeguard your skin while enjoying the beautiful Tanzanian weather.

Hourly UV Index in Geiro

The UV Index reveals a dynamic pattern throughout the day, starting at a low 1 in the early morning hours of 07:00 and 08:00. As the sun rises, the index climbs steadily, reaching 3 by 09:00. The midday sun peaks aggressively at 11, with the UV Index hitting its maximum of 11 from 12:00 to 13:00, signaling a high risk for skin damage without protection. Following this peak, values gradually decline, dropping to 9 at 14:00, and tapering down to 6 by 15:00. As the evening approaches, the UV Index falls back to 3 by 16:00 and finally descends to a 1 by 17:00 and 18:00, before sinking to 0 at 19:00, marking the end of the day's UV exposure. It's a reminder to stay vigilant under the sun, especially 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	11	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	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Geiro

The UV Index in this region remains consistently high throughout the year, with monthly readings peaking at 16 in March. The highest-risk months for UV exposure are January through April and September through November, where the index values hover around 14 to 16, categorized as extreme. Visitors and residents should take precautionary measures during these months, ensuring to limit sun exposure to less than 10 minutes during peak hours, and always employing protective measures such as sunscreen, hats, and protective clothing. It is crucial to stay vigilant about UV safety to minimize the risk of skin damage and health issues.

Monthly Maximum UV Index for Geiro, Tanzania

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

The table above highlights how UV exposure in Geiro 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.

Geiro'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
Geiro	15	15	16	15	13	11	11	13	14	14	14	15
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