Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
The average high-temperature during January registers at a still warm 27.4°C (81.3°F), closely corresponding to the preceding month. Sandton experiences an average temperature drop to a comfortable 16.6°C (61.9°F) during January nights.Heat index
The heat index for January is computed to be 29°C (84.2°F). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.Keep in mind the heat index values are meant for areas in shade and with light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
In Sandton, the average relative humidity in January is 63%.Rainfall
The month with the most rainfall is January, when the rain falls for 13.2 days and typically aggregates up to 57mm (2.24") of precipitation.Daylight
In January, the average length of the day is 13h and 34min.On the first day of January, sunrise is at 05:18 and sunset at 19:03. On the last day of the month, sunrise is at 05:41 and sunset at 19:00 SAST.
Sunshine
In January, the average sunshine is 11.4h.UV index
The months with the highest UV index in Sandton are January, February, October and November, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 6 in January translates into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in January in Sandton?
What is the average humidity in January in Sandton?
What is the rainiest month in Sandton?
How many days does it rain in January in Sandton?
What is the average length of the day in January in Sandton?
When are sunrise and sunset in January in Sandton?
How long on average sun shines in January in Sandton?
What is the month with the highest UV index in Sandton?
What is the UV index intensity in January in Sandton?
Average temperature in January
Sandton, South Africa
- Average high temperature in January: 27.4°C
The warmest month (with the highest average high temperature) is December (27.5°C).
The month with the lowest average high temperature is July (17.9°C).
- Average low temperature in January: 16.6°C
The month with the highest average low temperature is January (16.6°C).
The coldest month (with the lowest average low temperature) is July (6.1°C).
Average pressure in January
Sandton, South Africa
- Average pressure in January: 1013.1mbar
The month with the highest atmospheric pressure is July (1024.6mbar).
The month with the lowest atmospheric pressure is January (1013.1mbar).
Average wind speed in January
Sandton, South Africa
- Average wind speed in January: 8.9km/h
The windiest month (with the highest average wind speed) is November (11.6km/h).
The calmest month (with the lowest average wind speed) is May (7.8km/h).
Average humidity in January
Sandton, South Africa
- Average humidity in January: 63%
The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is September (34%).
Average rainfall in January
Sandton, South Africa
- Average rainfall in January: 57mm
The wettest month (with the highest rainfall) is January (57mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in January
Sandton, South Africa
- Average rainfall days in January: 13.2 days
The month with the highest number of rainy days is January (13.2 days).
The month with the least rainy days is July (1.4 days).
Average daylight in January /
Average sunshine in January
Sandton, South Africa
- Average daylight in January: 13h and 4min
The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 30min).
- Average sunshine in January: 11h and 2min
The month with the most sunshine is October (Average sunshine: 11h and 48min).
The month with the least sunshine is August (Average sunshine: 7h and 24min).
Average sunshine days in January
Sandton, South Africa
- Average sunshine days in January: 16.3 days
The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is January (16.3 days).
Average UV index in January
Sandton, South Africa
- Average UV index in January: 6
The months with the highest UV index are January, February, October and November (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in January
Sandton, South Africa
- Average cloud cover in January: 26
The month with the most cloud cover is January (Cloud cover 26).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in January
Sandton, South Africa
- Average visibility in January: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
