UV Index in Sironko, Uganda

Last updated: July 2, 2025

In Sironko, Uganda, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding the varying levels of UV radiation helps in preventing sunburn and reducing the risk of long-term skin damage. With Sironko's tropical climate, UV levels can peak dramatically during midday hours, reaching as high as 13 — a level considered very high. By being aware of these UV fluctuations throughout the day, residents and visitors can take proactive measures to safeguard their skin, especially during those critical hours.

Hourly UV Index in Sironko

At sunrise, the UV Index begins modestly with a maximum of 1 around 07:00, gradually rising to 3 by 09:00. By 10:00, the sun’s intensity peaks, reaching 6, but the real solar blast happens between 11:00 and 13:00, where it soars to a staggering 12 and 13 respectively. As the afternoon progresses, the UV Index starts to decline, dropping to 11 by 14:00 and further to 8 by 15:00. As the sun sets, the intensity diminishes, with readings of 5 at 16:00, 2 at 17:00, and returning to a safe 1 by 18:00. The day's UV journey concludes with a 0 reading at 19:00, highlighting the importance of sun safety during 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	10	very high	15 min
12:00	12	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 Sironko

Throughout the year, the UV Index remains in the extreme category, with values ranging from 12 to 17. January to March represent the highest risk months, featuring a UV Index peaking at 17 in March, where the burn time is a mere 10 minutes. While the summer months of June to August see a slight decrease in the index, it remains consistently high at 12 to 13. As we transition into the fall, the index sees little change, with October and November maintaining a UV Index of 14 and 13, respectively. Residents and visitors alike should exercise extreme caution during these high-risk months, ensuring they use adequate sun protection measures such as broad-spectrum sunscreen, protective clothing, and sunglasses, especially if exposure exceeds 10 minutes to prevent harmful effects from UV radiation.

Monthly Maximum UV Index for Sironko, Uganda

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

The table above highlights how UV exposure in Sironko compares to other major locations across Uganda. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Sironko's solar exposure compared to other cities in Uganda. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Kampala UVI	14	15	16	15	13	11	11	12	13	12	12	12
Jinja UVI	14	15	16	15	13	11	11	12	13	12	12	12
Gulu UVI	14	15	16	15	14	12	12	13	14	13	12	12
Lira UVI	14	15	16	15	14	12	12	12	13	13	12	12
Mbarara UVI	14	15	16	15	14	12	12	13	14	13	12	12
Sironko	15	16	17	16	14	12	13	13	14	14	13	13