UV Index in Sirari, Tanzania

Last updated: August 1, 2025

Understanding the UV Index is crucial for the residents of Sirari, Tanzania, where the sun's strong rays can significantly impact skin health. With peaks reaching a hazardous level of 12 during midday, it's vital to recognize how UV levels fluctuate throughout the day, particularly between 10:00 AM and 4:00 PM. This knowledge helps in preventing sunburn and reducing the risk of long-term skin damage. Sirari's tropical climate brings consistent exposure to UV radiation, making awareness and protective measures essential for everyone to enjoy the sun safely and healthily.

Hourly UV Index in Sirari

The UV Index throughout the day reveals a dynamic shift in sun strength. Starting off with a gentle maximum of 1 at both 07:00 and 08:00, the intensity begins to rise, reaching a moderate level of 3 by 09:00. As the clock strikes 10:00, the index leaps to 6, and by 11:00, it surges to 9, indicating increasing caution is needed. The day peaks at a scorching 11 at 12:00 and reaches its zenith with an astounding 12 at 13:00. A gradual decline follows, with levels dropping to 10 at 14:00, then 7 at 15:00, and finally settling back to 4 at 16:00. As the sun starts to set, the index plummets to 2 at 17:00, then quiets to 1 by 18:00, before dropping to 0 at 19:00. Be sure to take care 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	4	moderate	30 min
10:00	7	high	25 min
11:00	11	extreme	10 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	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 Sirari

Throughout the year, UV Index levels remain alarmingly high, particularly between January and April, when they reach a peak of 16. This period, characterized by an extreme exposure category and a burn time of just 10 minutes, signifies the highest risk months for sun exposure. May through July see a slight decrease, with values ranging from 11 to 13, but the risk remains significant. The UV Index gradually stabilizes around 13 to 14 from August to November, before declining slightly in December. Given these persistent high UV levels, it is crucial for both visitors and residents to take protective measures, such as wearing sunscreen, protective clothing, and seeking shade, especially during peak sun hours to prevent skin damage and health risks associated with overexposure.

Monthly Maximum UV Index for Sirari, Tanzania

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

The table above highlights how UV exposure in Sirari 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.

Sirari'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
Sirari	15	16	16	15	13	11	12	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