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 UTC
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.
