January weather forecast
Gertrudsburg, South Africa

January

Weather in January

January, the same as December, is a moderately hot summer month in Gertrudsburg, South Africa, with an average temperature ranging between min 17.6°C (63.7°F) and max 27.5°C (81.5°F).

Temperature

With the advent of January, Gertrudsburg's high-temperatures adjust to a still moderately hot 27.5°C (81.5°F), closely aligning with the preceding month. In the month of January, Gertrudsburg experiences an average low-temperature of 17.6°C (63.7°F).

Heat index

The heat index value for January is evaluated at a hot 30°C (86°F). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

In January, the average relative humidity is 75%.

Rainfall

In Gertrudsburg, in January, it is raining for 19.8 days, with typically 90mm (3.54") of accumulated precipitation. In Gertrudsburg, during the entire year, the rain falls for 133.8 days and collects up to 449mm (17.68") of precipitation.

Daylight

In Gertrudsburg, the average length of the day in January is 13h and 22min.
On the first day of the month, sunrise is at 05:18 and sunset at 18:50. On the last day of January, sunrise is at 05:39 and sunset at 18:48 SAST.

Sunshine

In January, the average sunshine is 9.1h.

UV index

January, March, September through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 in January interprets into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.

Frequently asked questions

What is the average January temperature?
The average high-temperature, in January, in Gertrudsburg, is 27.5°C (81.5°F), while the average low-temperature is 17.6°C (63.7°F). In January, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is evaluated at 30°C (86°F).
What is the average humidity in January?
The average relative humidity in January is 75%.
How much does it rain in January?
In Gertrudsburg, during January, the rain falls for 19.8 days and regularly aggregates up to 90mm (3.54") of precipitation.
How many hours of daylight does Gertrudsburg have in January?
In Gertrudsburg, the average day length in January is 13h and 22min.
What time are sunrise and sunset in January?
On the first day of January in Gertrudsburg, sunrise is at 05:18 and sunset at 18:50. On the last day of the month, sunrise is at 05:39 and sunset at 18:48 SAST.
How long on average sun shines in January?
The average sunshine duration in January is 9.1h.
What are the months with the highest UV index?
January, March, September through December, with an average maximum UV index of 6, are months with the highest UV index in Gertrudsburg.
What is the UV index reading in January?
In Gertrudsburg, the average daily maximum UV index in January is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in January
Gertrudsburg, South Africa
  • Average high temperature in January: 27.5°C

The warmest month (with the highest average high temperature) is December (28.5°C).
The month with the lowest average high temperature is July (21°C).

  • Average low temperature in January: 17.6°C

The month with the highest average low temperature is December (17.7°C).
The coldest month (with the lowest average low temperature) is July (8.6°C).

Average pressure in January
Gertrudsburg, South Africa
  • Average pressure in January: 1012.2mbar

The month with the highest atmospheric pressure is July (1023.6mbar).
The month with the lowest atmospheric pressure is January (1012.2mbar).

Average wind speed in January
Gertrudsburg, South Africa
  • Average wind speed in January: 9.6km/h

The windiest month (with the highest average wind speed) is October (10.6km/h).
The calmest month (with the lowest average wind speed) is May (6.7km/h).

Average humidity in January
Gertrudsburg, South Africa
  • Average humidity in January: 75%

The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is September (51%).

Average rainfall in January
Gertrudsburg, South Africa
  • Average rainfall in January: 90mm

The wettest month (with the highest rainfall) is December (106mm).
The driest month (with the least rainfall) is August (2mm).

Average rainfall days in January
Gertrudsburg, South Africa
  • Average rainfall days in January: 19.8 days

The month with the highest number of rainy days is December (20.1 days).
The month with the least rainy days is June (2.8 days).

Average daylight in January /
Average sunshine in January
Gertrudsburg, South Africa
  • Average daylight in January: 13h and 2min

The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 42min).

  • Average sunshine in January: 9h and 1min

The month with the most sunshine is October (Average sunshine: 10h and 36min).
The month with the least sunshine is April (Average sunshine: 6h and 24min).

Average sunshine days in January
Gertrudsburg, South Africa
  • Average sunshine days in January: 8.7 days

The month with the most sunshine days is August (25.9 days).
The month with the least sunshine days is December (7.4 days).

Average UV index in January
Gertrudsburg, South Africa
  • Average UV index in January: 6

The months with the highest UV index are January, March, September, October, November and December (UV index 6).
The month with the lowest UV index is June (UV index 4).

Average cloud cover in January
Gertrudsburg, South Africa
  • Average cloud cover in January: 50

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility in January
Gertrudsburg, South Africa
  • Average visibility in January: 8km

The months with the highest visibility are June, August, September and October (10km).
The month with the lowest visibility is January (8km).

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