UV Index in Windhoek, Namibia

Last updated: May 3, 2025

Understanding the UV Index in Windhoek, Namibia, is crucial for protecting your skin and overall health. With high levels of ultraviolet radiation, especially during peak hours, being aware of the UV Index helps you prevent sunburn and reduce the long-term risks of skin damage. Windhoek's BSh climate often results in intense sun exposure, particularly from late morning to early afternoon, when indices can soar to levels 8 or 9. Stay informed and take proactive measures to enjoy the beautiful Namibian sunshine safely!

Hourly UV Index in Windhoek

The UV Index (UVI) for the day reveals a significant rise in solar intensity as the morning progresses. Starting at 0 at 07:00, the index gradually climbs, reaching 1 by 08:00. It picks up momentum, hitting 4 by 10:00, and peaking at a striking 9 between 13:00 and 14:00 - the highest point of the day. As the afternoon wanes, there’s a notable decline, with the UVI dropping to 5 at 15:00, and then gently tapering off to 1 by 17:00. By 19:00, the sun's effect diminishes to 0, making the day's UV radiation a clear reminder to stay protected 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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	7	high	25 min
12:00	8	very high	15 min
13:00	9	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 Windhoek

Throughout the year, UV index levels exhibit significant seasonal variations, with the highest values occurring in the winter months of January (16) and February (17), characterized by an extreme exposure category and a burn time of just 10 minutes. The risk remains elevated through March (14), April (12), and September (12), indicating that October (14) and November (15) also carry extreme risk. May (9) marks a slight decrease to very high exposure, while June (7) and July (7) stabilize at a high risk level, allowing for a longer burn time of 25 minutes. August (10) returns to very high before the gradual decline in UV exposure heading into autumn. Given this data, it is crucial for both visitors and residents to take precautions against sun exposure, especially during the high-risk months of winter and early fall. Wearing protective clothing, using sunscreen, and limiting sun exposure during peak hours are strongly advised to mitigate potential skin damage.

Monthly Maximum UV Index for Windhoek, Namibia

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

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

Windhoek's solar exposure compared to other cities in Namibia. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Swakopmund UVI	14	14	12	11	8	6	6	8	11	12	13	14
Walvis Bay UVI	14	14	12	11	8	6	6	8	11	12	13	14
Windhoek	16	17	14	12	9	7	7	10	12	14	15	16
Rundu UVI	17	17	15	13	10	8	8	10	12	12	15	15
Oshakati UVI	17	17	16	13	10	9	9	11	13	14	15	16