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United StatesThe weather in January in Johannesburg
It's cool to moderate in January in Johannesburg with an average temperature of 16°C. Temperatures this month range from a low of 12°C to a high of 18°C. At night, you can expect temperatures between -2°C and 4°C.
Looking for sun and warm weather? January isn’t a good month to be in Johannesburg. The temperatures are too low for a warm stay this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in January for Johannesburg, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 24°C in 2021, Johannesburg reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was 6°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of -10°C to a highest value of 12°C.
Precipitation and snowfall
In January, there is an average of 37 mm of precipitation, spread over 6 days. Of the total precipitation, about 0,1 cm falls as snow in January. The wind speed is around 3 Bft, mostly coming from the Southwest.
Daily weather in January for Johannesburg
Click on any day in January to get detailed info about the usual weather on that day in Johannesburg. Check out the historical temperatures and precipitation over the past 10 years on this day.
January weather comparison
| Johannesburg | New York | |
|---|---|---|
| Average temperature | 16°C | 5°C |
| Max. temperature | 18°C | 11°C |
| Min. temperature | -2°C | -5°C |
| Total precipitation | 37 mm | 97 mm |
| Rainy days | 6 days | 12 days |
| Total snowfall | 0,1 cm | 16 cm |
| Snowy days | 1 day | 8 days |
Start of January
The month of January starts in Johannesburg with cool temps, averaging around 15°C during the day and nights around 1°C.
Mid January
By mid-January, daytime temps rise to around 16°C, with nights around 3°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of January
By the end of January, the average daytime temperature in Johannesburg is around 17°C, while nighttime temps are about 2°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
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UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Johannesburg for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in January in Johannesburg, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in January in Johannesburg
Temperature in January in Johannesburg over the years
Precipitation charts
These charts show the average amount of precipitation in January in Johannesburg, California. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in January in Johannesburg
Total precipitation in January in Johannesburg over the years
Daily Snowfall in January in Johannesburg
Snowfall in January in Johannesburg per year
Daily UV index in January in Johannesburg
This chart shows the average daily UV index in January in Johannesburg, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in January in Johannesburg
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Average weather in Johannesburg by month
Click on a month below to see detailed weather info for Johannesburg. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.