UV Index in Kisiwani, Tanzania

Last updated: August 1, 2025

Understanding the UV Index in Kisiwani, Tanzania, is crucial for protecting your skin and overall health in this vibrant coastal region. With the sun shining brightly, especially during the midday hours when UV levels can reach a staggering 11, awareness of UV exposure is essential for preventing sunburn and long-term skin damage. Kisiwani's Aw climate brings consistent sunshine, heightening the need to monitor UV levels daily. By staying informed about the UV Index, residents and visitors alike can take essential precautions, ensuring they enjoy the beautiful rays of the sun safely and healthily.

Hourly UV Index in Kisiwani

The UV Index throughout the day showcases a distinct peak in intensity, making it essential to stay sun-safe. Starting with a mild level of 1 at 07:00 and 08:00, the index dramatically rises as the sun ascends, reaching a notable 4 by 09:00. The real break comes between 10:00 and 13:00, where a sharp increase sees the UVI soar to an impressive 11 at its highest point. As the afternoon progresses, the index gently declines, dipping to 9 at 14:00, before tapering off to a comfortable 6 by 15:00. By evening, the intensity fades back to 1 at 17:00 and concludes with a safe level of 0 by 19:00. Remember to take precautions, especially during those peak hours of 11:00 to 13:00 when UV exposure is at its worst!

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	13	extreme	10 min
13:00	13	extreme	10 min
14:00	11	extreme	10 min
15:00	7	high	25 min
16:00	4	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 Kisiwani

Throughout the year, the UV Index remains consistently extreme, with the highest values recorded from January to April, averaging between 15 and 16. High-risk months for UV exposure include February and March, where the UV Index peaks at 16, indicating a very short burn time of only 10 minutes. Despite slightly lower values in the summer months of June and July (UV Index 11), precautions remain essential, as the exposure level remains extreme. Visitors and residents are advised to take protective measures seriously, especially during these high-risk months, by using sunscreen, wearing protective clothing, and seeking shade to mitigate the risk of UV-related health issues. As a general guideline, it's crucial to stay vigilant against UV exposure throughout the year, as the burn time remains constant at just 10 minutes across all months.

Monthly Maximum UV Index for Kisiwani, Tanzania

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

The table above highlights how UV exposure in Kisiwani 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.

Kisiwani'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
Kisiwani	15	16	16	15	13	11	11	13	14	14	13	14
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