UV Index in Masasi, Tanzania

Last updated: July 2, 2025

Understanding the UV Index in Masasi, Tanzania is crucial for ensuring your health and safety under the sun. The UV Index provides vital information about the intensity of ultraviolet radiation at different times of the day, helping residents and visitors alike take necessary precautions to prevent sunburn and protect skin health. With Masasi's Aw climate zone, which features a sunny disposition, UV levels can soar, especially during midday hours when they peak at a striking 10. Being aware of the UV Index empowers you to enjoy the abundant sunshine while minimizing the risks associated with excessive exposure.

Hourly UV Index in Masasi

The UV Index for today presents a clear pattern of sun intensity, peaking sharply in the early afternoon. Starting off with a low index of 1 at 7 AM and remaining consistent at the same level until 9 AM, the sun's rays gradually intensify. By 10 AM, the index rises to 6, reaching a notable 8 at 11 AM, and soaring to a maximum of 10 between 12 PM and 1 PM—the critical hours for sun exposure. As the day progresses, the intensity begins to decline, dropping back to 8 by 2 PM, then tapering down to 5 by 3 PM. The late afternoon and evening bring a return to safer levels, with the index falling to 1 at 5 PM and fading to 0 by 7 PM. For those planning outdoor activities, it's essential to stay protected during the 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	8	very high	15 min
12:00	10	very high	15 min
13:00	10	very high	15 min
14:00	8	very high	15 min
15:00	5	moderate	30 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 Masasi

The UV Index exhibits significant seasonal changes throughout the year, with high-risk months identified as January to April and again in August to November, where the UV Index consistently reaches extreme levels of 15 to 14, resulting in a burn time of just 10 minutes. In June and July, the UV Index drops slightly to 10 with a very high exposure category, but caution is still warranted as the burn time increases to 15 minutes. Residents and visitors should take preventative measures during these high-risk months, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade whenever possible to minimize UV exposure and reduce the risk of skin damage.

Monthly Maximum UV Index for Masasi, Tanzania

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

The table above highlights how UV exposure in Masasi 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.

Masasi'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
Masasi	15	15	15	14	12	10	10	12	13	14	14	14
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