January weather forecast
Rustenburg, South Africa

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Weather in January

Rustenburg's year starts off with fairly temperate weather as January shows signs of significant humidity and slightly higher temperatures. Marked as the month with the highest rainfall at 83mm (3.27"), it sets the ground wet for the rest of the year, providing the much-needed moisture for the flora and fauna of the city. The days are lengthy allowing more sunshine hours and promoting outdoor activities. The wind speeds are moderate, creating a pleasant atmosphere. Predominantly, the weather is slightly more volatile compared to the rest of the year, with variations in cloud cover and visibility levels.

Temperature

January proves to be the warmest month, recording an average peak temperature of 29.3°C (84.7°F) and a minimum temperature of 18°C (64.4°F).

Heat index

In January, the heat index is computed to be a hot 32°C (89.6°F). One might feel worn out with persistent exposure and activity, resulting in heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

In January, the average relative humidity is 60%.

Rainfall

In Rustenburg, in January, it is raining for 20.7 days, with typically 83mm (3.27") of accumulated precipitation. In Rustenburg, during the entire year, the rain falls for 118.3 days and collects up to 411mm (16.18") of precipitation.

Daylight

The average length of the day in January is 13h and 32min.
On the first day of January in Rustenburg, sunrise is at 05:22 and sunset at 19:05. On the last day of the month, sunrise is at 05:45 and sunset at 19:03 SAST.

Sunshine

The average sunshine in January is 11.5h.

UV index

January through March, October through December, with an average maximum UV index of 6, are months with the highest UV index in Rustenburg. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 6 during January translates into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What time of the year is the hottest in Rustenburg?

The month of January sees the average highest temperatures in Rustenburg, reaching 29.3°C (84.7°F) at the peak and 18°C (64.4°F) at the low.

How hot is January in Rustenburg?

In Rustenburg, in January, the average high-temperature is 29.3°C (84.7°F), and the average low-temperature is 18°C (64.4°F). In January, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is computed to be 32°C (89.6°F).

What is the average humidity in January in Rustenburg?

The average relative humidity in January in Rustenburg is 60%.

How many days does it rain in January in Rustenburg?

In Rustenburg, South Africa, during January, the rain falls for 20.7 days and regularly aggregates up to 83mm (3.27") of precipitation.

What is the average length of the day in January in Rustenburg?

In Rustenburg, the average day length in January is 13h and 32min.

When are sunrise and sunset in January in Rustenburg?

In January, on the first day of the month, sunrise is at 05:22 and sunset at 19:05. On the last day of the month, sunrise is at 05:45 and sunset at 19:03 SAST.

How long on average sun shines in January in Rustenburg?

In Rustenburg, the average sunshine duration in January is 11.5h.

What is the month with the highest UV index in Rustenburg?

January through March, October through December, with an average maximum UV index of 6, are months with the highest UV index in Rustenburg.

What is the UV index reading in January in Rustenburg?

In January, the average daily maximum UV index in Rustenburg, South Africa, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.

Average temperature in January
Rustenburg, South Africa

Average temperature in January - Rustenburg, South Africa
  • Average high temperature in January: 29.3°C

The warmest month (with the highest average high temperature) is January (29.3°C).
The month with the lowest average high temperature is July (18.9°C).

  • Average low temperature in January: 18°C

The months with the highest average low temperature are January and December (18°C).
The coldest month (with the lowest average low temperature) is July (6.3°C).

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Average pressure in January
Rustenburg, South Africa

Average pressure in January - Rustenburg, South Africa
  • Average pressure in January: 1012.3mbar

The month with the highest atmospheric pressure is July (1024.4mbar).
The month with the lowest atmospheric pressure is January (1012.3mbar).

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Average wind speed in January
Rustenburg, South Africa

Average wind speed in January - Rustenburg, South Africa
  • Average wind speed in January: 8.1km/h

The windiest month (with the highest average wind speed) is October (10.6km/h).
The calmest months (with the lowest average wind speed) are March and May (7km/h).

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Average humidity in January
Rustenburg, South Africa

Average humidity in January - Rustenburg, South Africa
  • Average humidity in January: 60%

The month with the highest relative humidity is February (61%).
The month with the lowest relative humidity is September (32%).

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Average rainfall in January
Rustenburg, South Africa

Average rainfall in January - Rustenburg, South Africa
  • Average rainfall in January: 83mm

The wettest month (with the highest rainfall) is December (95mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days in January
Rustenburg, South Africa

Average rainfall days in January - Rustenburg, South Africa
  • Average rainfall days in January: 20.7 days

The month with the highest number of rainy days is January (20.7 days).
The month with the least rainy days is August (1 days).

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Average daylight in January /
Average sunshine in January
Rustenburg, South Africa

Average daylight in January / Average sunshine in January - Rustenburg, 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 3min

The month with the most sunshine is October (Average sunshine: 11h and 54min).
The months with the least sunshine are June and August (Average sunshine: 7h and 30min).

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Average sunshine days in January
Rustenburg, South Africa

Average sunshine days in January - Rustenburg, South Africa
  • Average sunshine days in January: 6.6 days

The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is January (6.6 days).

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Average UV index in January
Rustenburg, South Africa

Average UV index in January - Rustenburg, 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).

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Average cloud cover in January
Rustenburg, South Africa

Average cloud cover in January - Rustenburg, South Africa
  • Average cloud cover in January: 24

The months with the most cloud cover are January and December (Cloud cover 24).
The months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in January
Rustenburg, South Africa

Average visibility in January - Rustenburg, South Africa
  • Average visibility in January: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Rustenburg, South Africa

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