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
Weather in January
Temperature
January brings the highest temperatures, with an average high of 28.7°C (83.7°F) and an average low of 17.5°C (63.5°F).Heat index
January's mean heat index is computed to be a tropical 31°C (87.8°F). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Realize that the values for the heat index are set for shaded places and light winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
The months with the highest humidity in Onderstepoort, South Africa, are January and February, with an average relative humidity of 62%.Rainfall
January is the month with the most rainfall. Rain falls for 21.5 days and accumulates 92mm (3.62") of precipitation.Daylight
The average length of the day in January in Onderstepoort, South Africa, is 13h and 32min.On the first day of January, sunrise is at 05:19 and sunset at 19:01. On the last day of the month, sunrise is at 05:41 and sunset at 18:59 SAST.
Sunshine
In Onderstepoort, the average sunshine in January is 11.4h.UV index
The months with the highest UV index in Onderstepoort, South Africa, are January through March, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In January, the maximum UV index of 6 translates into these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What month is the hottest in Onderstepoort?
How hot does it get in Onderstepoort in January?
What is the most humid month in Onderstepoort?
What is the average humidity in January in Onderstepoort?
What is the wettest month in Onderstepoort?
How much does it rain in Onderstepoort in January?
How many hours of daylight does Onderstepoort have in January?
When is the sunrise / sunset in January in Onderstepoort?
How long on average sun shines in January in Onderstepoort?
What is the month with the highest UV index in Onderstepoort?
How high is the UV index in January in Onderstepoort?
Average temperature in January
Onderstepoort, South Africa
- Average high temperature in January: 28.7°C
The warmest month (with the highest average high temperature) is January (28.7°C).
The month with the lowest average high temperature is June (19.1°C).
- Average low temperature in January: 17.5°C
The months with the highest average low temperature are January and December (17.5°C).
The coldest month (with the lowest average low temperature) is July (6.9°C).
Average pressure in January
Onderstepoort, South Africa
- Average pressure in January: 1013mbar
The month with the highest atmospheric pressure is July (1024.6mbar).
The month with the lowest atmospheric pressure is January (1013mbar).
Average wind speed in January
Onderstepoort, South Africa
- Average wind speed in January: 8.9km/h
The windiest month (with the highest average wind speed) is November (11.1km/h).
The calmest month (with the lowest average wind speed) is May (7.3km/h).
Average humidity in January
Onderstepoort, South Africa
- Average humidity in January: 62%
The months with the highest relative humidity are January and February (62%).
The month with the lowest relative humidity is September (35%).
Average rainfall in January
Onderstepoort, South Africa
- Average rainfall in January: 92mm
The wettest month (with the highest rainfall) is January (92mm).
The driest month (with the least rainfall) is July (0mm).
Average rainfall days in January
Onderstepoort, South Africa
- Average rainfall days in January: 21.5 days
The month with the highest number of rainy days is January (21.5 days).
The month with the least rainy days is July (1.1 days).
Average daylight in January /
Average sunshine in January
Onderstepoort, South Africa
- Average daylight in January: 13h and 3min
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 36min).
- Average sunshine in January: 11h and 2min
The month with the most sunshine is October (Average sunshine: 11h and 54min).
The month with the least sunshine is August (Average sunshine: 7h and 30min).
Average sunshine days in January
Onderstepoort, South Africa
- Average sunshine days in January: 6.6 days
The month with the most sunshine days is July (29.6 days).
The month with the least sunshine days is December (6.5 days).
Average UV index in January
Onderstepoort, South Africa
- Average UV index in January: 6
The months with the highest UV index are January, February, March, October, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in January
Onderstepoort, 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
Onderstepoort, 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).
Onderstepoort, South Africa
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