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Johannesburg UV Index Today

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The UV index in Johannesburg, South Africa Flag of South Africa will reach a high of 9.15 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!

Hourly Forecast Chart

Today's Safety Tips

The risk is very high. It's best to stay out of the sun between 10 a.m. and 4 p.m. If you must be outside, wear protective clothing and apply sunscreen often.

Johannesburg's UV Index

Johannesburg's UV index ranges from moderate in winter (around 3-5) to very high in summer (up to 10 or 11), meaning the sun's rays are strongest during the warmer months. The city experiences a summer rainy season with afternoon thunderstorms, while winters are dry and mild, with temperatures cooling down but rarely freezing. Compared to other parts of South Africa, Johannesburg is cooler than the coastal areas and experiences more rainfall than the dry western regions. Neighboring countries like Botswana have drier, hotter climates, whereas Mozambique is more humid with a longer rainy season.

Hourly UV Index Trend

See the UV index hour by hour for Johannesburg. When the level is high, it's smart to find some shade.

Nearby Cities

Check the UV index in other cities near Johannesburg.

Disclaimer

* The information on this page about the UV index in Johannesburg is for educational purposes only. It is not a substitute for professional medical advice. Always consult a doctor for any health concerns.