UV Index in Cala, South Africa

Last updated: July 2, 2025

In Cala, South Africa, understanding the UV Index is essential for protecting your skin and enhancing your overall health. As UV levels fluctuate throughout the day, knowing when to take precautions can help prevent painful sunburns and long-term skin damage. Cala's Cfb climate features moderate temperatures, but even a brief exposure during peak UV hours—typically around midday when levels can reach 5—can pose significant risks. Stay informed and enjoy the sun responsibly!

Hourly UV Index in Cala

The UV Index throughout the day follows a distinct pattern, with the intensity peaking at 12:00 PM when it reaches a noteworthy level of 5. Morning hours start off mild, with values of 1 at 07:00 and 08:00, gradually escalating to 2 by 09:00, then climbing to 4 at 11:00. Post-noon, the index slightly decreases, falling to 4 again at 13:00, before tapering off to 2 by 15:00. As the day winds down, the levels drop significantly, plunging to 0 by 19:00. This highlights the importance of sun protection during the midday hours when UV radiation is at its strongest.

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	3	moderate	30 min
11:00	4	moderate	30 min
12:00	5	moderate	30 min
13:00	4	moderate	30 min
14:00	3	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 Cala

The UV Index experiences significant fluctuations throughout the year, with January, February, March, October, November, and December classified as high-risk months due to their extreme exposure category and a burn time of only 10 minutes. As the year progresses, the UV Index decreases from 15 in the winter months to a low of 5 during June and July, where exposure is considered moderate. However, the risk increases again in August and September, with indices reaching 7 and 10, respectively. Residents and visitors should be especially cautious during the extreme months, applying sunscreen frequently, wearing protective clothing, and seeking shade to minimize skin damage. Even during moderate months, it’s advisable to stay aware of UV levels and take protective measures when spending extended time outdoors.

Monthly Maximum UV Index for Cala, South Africa

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

The table above highlights how UV exposure in Cala 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.

Cala'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
Cala	15	15	13	9	6	5	5	7	10	12	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
Soweto UVI	16	15	13	11	7	6	6	8	11	13	15	16