Johannesburg UV index in January
Typical ultraviolet levels for Johannesburg during January, from the past year of data.
Extreme
Johannesburg
Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
14.7
UV Index
January average UTC
Low
Moderate
High
Very High
Extreme
January UV
14.7256
Risk level
Extreme
Yearly peak
14.7256
Peak month
January
Johannesburg UV index — monthly trend
Average UV index by month over the past year, with January highlighted.
Visiting Johannesburg in January?
In January, Johannesburg's typical UV index is about 14.7256 — a extreme risk level. Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
Across the year, Johannesburg sees the strongest UV in Winter, peaking around 14.7256 in January. Plan sun protection accordingly.
