UV Index in Frankfort, South Africa

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Frankfort, South Africa, where the unique climate offers an array of outdoor activities but also comes with certain sun exposure risks. Recognizing the importance of UV levels aids in the prevention of sunburn and the preservation of skin health, ensuring you enjoy the sun safely. Given Frankfort's Cwb climate, which features distinct wet and dry seasons, UV levels can fluctuate dramatically throughout the day. Notably, during peak hours, the index can reach as high as 6, necessitating awareness and protective measures to mitigate the harmful effects of sun exposure. Stay informed and protect your skin while reveling in the sunny beauty of Frankfort!

Hourly UV Index in Frankfort

As the sun rises, the UV Index remains low, peaking only at 1 until 9:00 AM. A gradual increase sees it reach 6 by noon, indicating peak sun intensity. The high point of 6 persists until 1:00 PM, making this the ideal time to take precautions if you're outdoors. After this, the index begins to decline, dropping to 4 by 2:00 PM and falling further to 1 by 4:00 PM. By the evening, the UV levels settle at 0, ensuring a safe outdoor experience. Remember, during the midday hours, it’s crucial to stay protected under the sun!

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	6	high	25 min
13:00	6	high	25 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 Frankfort

The UV Index experiences significant seasonal changes, with January through April presenting extreme exposure levels of 15 to 11, where a mere 10 minutes of sun can lead to burns. The high-risk months are January, February, March, April, September, October, and November, all classified as extreme with burn times of just 10 minutes. As we transition to late spring and summer, UV levels decrease slightly in May and June to high and moderate respectively, allowing for longer safe exposure times of 25 to 30 minutes. However, a surge in August places the UV Index back to very high with a 15-minute burn time. For residents and visitors, it is crucial to prioritize sun safety by applying sunscreen, wearing protective clothing, and seeking shade during peak hours, especially in the high-risk months.

Monthly Maximum UV Index for Frankfort, South Africa

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

The table above highlights how UV exposure in Frankfort 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.

Frankfort'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
Frankfort	15	15	13	11	7	5	6	8	11	12	14	15
Pretoria UVI	16	15	13	10	7	6	6	9	11	13	14	16
Soweto UVI	16	15	13	11	7	6	6	8	11	13	15	16