UV Index in Stilfontein, South Africa

Last updated: June 2, 2025

Stilfontein, South Africa, is blessed with a unique climate, but it also comes with its own set of UV exposure risks that residents and visitors alike need to stay informed about. Understanding the UV Index is crucial for sunburn prevention and maintaining long-term skin health. With UV levels peaking between 10:00 AM and 2:00 PM, reaching a maximum of 5, it's essential to arm yourself with knowledge about sun safety—especially during the warmer months. By staying aware of the UV Index, you can enjoy the beautiful sun while protecting your skin from its harmful effects.

Hourly UV Index in Stilfontein

Starting your day early has its perks, as the UV Index remains quite low—hovering between 1 and 2 from 07:00 to 09:00. However, as the sun rises higher, expect a noticeable increase in UV exposure. By 11:00, the index peaks at a robust 5, indicating a need for protection, especially around midday when it stays elevated at 5 until 13:00. Post-noon, the index begins to taper off, dropping back to 4 by 14:00 and down to 1 as evening approaches from 16:00 onward, where it finally settles at 0 by 18:00. To enjoy your day safely, consider applying sunscreen 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	2	low	45 min
10:00	4	moderate	30 min
11:00	5	moderate	30 min
12:00	5	moderate	30 min
13:00	5	moderate	30 min
14:00	4	moderate	30 min
15:00	2	low	45 min
16:00	1	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Stilfontein

Seasonal UV changes indicate that the highest risk months occur from January to April, consistently presenting an extreme UV Index of 16 to 13 and a rapid burn time of just 10 minutes. This high exposure continues through September and November, dropping slightly in May and June. May offers a more moderate risk with a high UV Index of 7 and a burn time of 25 minutes, followed by July, which returns to a high level, but with a burn time of 25 minutes. During August, while still high at 8, the burn time decreases to 15 minutes. As winter approaches again, October to December sees another spike in danger. Visitors and residents should take precautions during these high-risk months by applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, especially during peak sunlight hours.

Monthly Maximum UV Index for Stilfontein, South Africa

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

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

Stilfontein's solar exposure compared to other cities in South Africa. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cape Town UVI	14	13	11	8	5	3	4	6	9	11	12	14
Durban UVI	14	13	12	9	6	4	5	7	9	11	13	15
Johannesburg UVI	15	15	13	10	7	6	6	8	11	12	14	16
Pretoria UVI	16	15	13	10	7	6	6	9	11	13	14	16
Stilfontein	16	15	13	11	7	5	6	8	11	13	15	16
Soweto UVI	16	15	13	11	7	6	6	8	11	13	15	16