Johannesburg UV index in September
Typical ultraviolet levels for Johannesburg during September, from the past year of data.
Very High
Johannesburg
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
8.9
UV Index
September average
Low
Moderate
High
Very High
Extreme
September UV
8.8642
Risk level
Very High
Yearly peak
14.7256
Peak month
January
Johannesburg UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Johannesburg in September?
In September, Johannesburg's typical UV index is about 8.8642 — a very high risk level. Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
Across the year, Johannesburg sees the strongest UV in Winter, peaking around 14.7256 in January. Plan sun protection accordingly.
