Climate and monthly weather forecast
Welkom, South Africa

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The climate of Welkom

Welkom, found in the heartland of South Africa, boasts a BSk Köppen climate classification, which maps to a Mid-latitude Steppe climate. The region enjoys sizable temperature fluctuations from the chillier 5.5°C (41.9°F) low in July to the sweltering summer highs of 30.2°C (86.4°F) in January. Amidst these peaks and troughs, the median temperature stays within a comfortable mid-range. This climate type allows for a semi-arid weather condition with reprieve provided by sporadic, light showers.

Year-round, the sunlight graces Welkom for approximately 10.4 hours to 13.7 hours a day. Although here sunshine does not just denote daylight, it is a measurement of direct, unfiltered sunlight, which ranges from 7.4 hours in August to 11.9 hours during November and December. Over the course of the year, cloud coverage remains relatively low, reaching a peak of 19% in January and February while dropping to a measly 6% in July and August.

Rainfall in Welkom follows a predictable pattern. Heightened precipitation is observed in the summer months, revealed in the recorded levels of 33mm (1.3") in January and decreasing to 29mm (1.14") in December. Contrastingly, the dry winter leaves the landscape parched with barely 2mm (0.08") of rainfall from June to August. It is also important to note the wind conditions throughout the year. With average wind speeds reaching up to 14.4km/h (8.9mph) in November and gusts topping 21.2km/h (13.2mph), it is worth considering when planning outdoor activities.

The best time to visit Welkom

Whilst favorable conditions might be subjective based on individual preferences, the general consensus points towards the autumn months of April and May as ideal for a visit. During this period, the weather is mild with high temperatures ranging from 23.6°C (74.5°F) to 21.3°C (70.3°F) and lows falling between 12.5°C (54.5°F) to 9.7°C (49.5°F). Rainfall is also relatively low during these months, only reaching 22mm (0.87") in April and falling to 4mm (0.16") by May.

Moreover, visitors get the opportunity to experience longer daylight hours, approximately 10.7 to 11.4 hours and following the sun, visitors can make the most of 7.6 to 8 hours of direct sunshine. Although the UV index remains at 4, visitors should protect their skin and eyes against potential harm due to exposure.

The worst time to visit Welkom

Based on climatological data, winter months, specifically June and July, are considered less favorable times to visit Welkom. The weather during this period gets considerably colder with low temperatures falling to 5.7°C (42.3°F) in June and reaching a winter low of 5.5°C (41.9°F) in July. Alongside this, the month of June sees minimal rainfall with a recording of 3mm (0.12"), further plummeting to 2mm (0.08") by July, offering limited rejuvenation to the arid environment.

Spring weather in Welkom

Welkom's spring blooms from September to early December. In this period, temperatures record a steady rise from 25.8°C (78.4°F) in September to 30.1°C (86.2°F) by December with corresponding lows of 10.8°C (51.4°F) to 17.5°C (63.5°F). With the advent of spring, diminishing cloud cover allows for increased sunshine hours varying between 9.8 hours in September to as high as 11.7 in December. While rainfall gradually increases from a minimal 6mm (0.24") in September to 29mm (1.14") by December, the wind simultaneously picks up speed from 13.3km/h (8.3mph) to 13.2km/h (8.2mph).

Summer weather in Welkom

Summers in Welkom stretch through the months of December to March, bearing witness to the highest recorded temperatures from 27.8°C (82°F) to 30.2°C (86.4°F). Correspondingly, the lowest temperatures fluctuate from 14.2°C (57.6°F) to 18.6°C (65.5°F). Although the summer period carries the heaviest rainfall, ranging between 14mm (0.55") in October to 33mm (1.3") in January, it is also the period of highest sunlight receiving around 11.7 to 11.8 hours of direct sunshine.

Autumn weather in Welkom

Autumn graces Welkom from April till June, bringing a noticeable drop in temperatures. High temperatures start at 23.6°C (74.5°F) in April, steadily decreasing to 17.3°C (63.1°F) in June, and the lower limit also decreases, measuring 12.5°C (54.5°F) in April and dropping to 5.7°C (42.3°F) in June. These cooling temperatures coincide with a substantial decline in rainfall, a mere 22mm (0.87") in April dropping to 3mm (0.12") in June.

Winter weather in Welkom

Winter takes its course in Welkom from June to August. This period is characterized by lower temperatures ranging from 17.5°C (63.5°F) to 21.1°C (70°F) with corresponding lows of 5.5°C (41.9°F) to 7.3°C (45.1°F). This period witnesses the least rainfall, with just 2mm (0.08") precipitation in July and August. Though the winter period carries fewer daylight hours, direct sunshine still stands relatively strong, offering around 7.5 to 7.6 hours of sunlight.

Weather in January

In January, Welkom's climate transitions from a year-end mellow to a full-throttle warm period. It tends to be hotter than December, averaging a high temperature of 30.2°C (86.4°F), with humidity levels hovering around 49%. Expect fewer hours of daylight and sunshine compared to December, while rainfall sits moderately at 33mm (1.3"). Weather in January »

Weather in February

February in Welkom brings a slight decrease in temperatures compared to the heat levels of January. However, temperature changes tend not to be dramatically different from the preceding months. The humidity level subtly increases, intensifying the atmospheric density. Weather in February »

Weather in March

Welcoming autumn, March in Welkom sees another temperature drop from 29.3°C (84.7°F) to 27.9°C (82.2°F) and a marginal increase in atmospheric pressure. The overall climate becomes visibly cooler as the month progresses, preparing the pathway for autumn. Weather in March »

Weather in April

In April, Welkom's weather undergoes noticeable changes, signaling the midst of autumn. A marked temperature drop from 27.9°C (82.2°F) in March to April's 23.6°C (74.5°F) signals a definite shift in climate. The days continue to shorten, and a dip in the UV index demonstrates the sun's weakening intensity. Weather in April »

Weather in May

With the month of May, Welkom embraces the colder season. The temperature begins to drop even further, and the difference compared to April is noticeable. The dropping temperature also brings a welcome reduction in humidity, leading to crisp, clear skies. Weather in May »

Weather in June

June marks the arrival of winter in Welkom. The city experiences its coldest temperatures of the year in this month, significantly lower than in May. However, drier air brings about clearer skies and increased visibility. The decrease in temperature is accompanied by a reduction in rainfall, making June the driest month of the year. Weather in June »

Weather in July

Welkom's weather in July is characterized by the continual cold winter temperatures that began in June. Nevertheless, a tiny rise in temperature does occur, indicating that the coldest phase has passed. Albeit the temperature rise, the climate remains chilly, with minimum temperatures scarcely rising above 6°C (42.8°F). Weather in July »

Weather in August

In August, Welkom begins to experience early signs of the coming spring. While the weather remains cold compared to the summer months, there is a slight increase from the winter temperatures seen in July. The city gains longer daylight hours, and a slight rise in UV index marks the return of Welkom's typically sun-drenched weather. Weather in August »

Weather in September

Welkom's weather shifts significantly in September, with a dramatic rise in high temperatures from August's 21.1°C (70°F) to a steaming 25.8°C (78.4°F). The welcomed warmth signifies the onset of spring and a departure from the cold and crisp winter weather. Weather in September »

Weather in October

October in Welkom is relatively warm following the considerable temperature rise in September. A resurgence in rainfall becomes apparent, marking a break in the dry spell that dominates since the departure of July's drizzle. Despite increasing rainfall, the city basks in plenty of sunshine, making the month comfortably warm rather than stifling, especially compared to the impending rise in heat that November will bring. As Welkom welcomes October, the average high-temperature stabilizes at a still warm 27.8°C (82°F), showing little deviation from September's 25.8°C (78.4°F). Weather in October »

Weather in November

November denotes the onset of summer in Welkom, with noticeable changes in weather conditions. There's a rise in both temperature and humidity, reflecting the change of seasons. Cloud cover starts to build up, preparing for the increased rainfall typical of December. Weather in November »

Weather in December

December in Welkom culminates in the year's hottest temperatures, averaging a high of 30.1°C (86.2°F), an increase from November's heat. The rise in heat is accompanied by an uptick in cloudiness and precipitation, hallmarking Welkom's rainy season. Weather in December »
Updated: Jan 25, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What are the warmest months in Welkom?

Temperature readings in Welkom reach their annual highs in January, averaging 30.2°C (86.4°F) and a minimum average of 18.6°C (65.5°F).

What is the rainiest month in Welkom?

January is the month with the most rainfall. Rain falls for 11.9 days and accumulates 33mm (1.3") of precipitation.

How much does it rain in Welkom?

In Welkom, during the entire year, the rain falls for 73.3 days and collects up to 192mm (7.56") of precipitation.

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

The months with the highest UV index are January, February, October through December, with an average maximum UV index of 6.

What is the most humid month in Welkom?

February is the most humid month in Welkom, with an average relative humidity of 53%.

When is the lowest UV index in Welkom?

May through July, with an average maximum UV index of 4, are months with the lowest UV index.

What month is the coldest in Welkom?

June proves to be the coldest month, recording an average maximum temperature of 17.3°C (63.1°F) and a minimum temperature of 5.7°C (42.3°F).

What is the month with the shortest days in Welkom?

With an average of 10h and 24min of daylight, June has the shortest days of the year in Welkom, South Africa.

What is the driest month in Welkom?

July and August are months with the least rain in Welkom when the rain falls for 1.4 days and typically aggregates up to 2mm (0.08") of rain.

What is the month with the least sunshine in Welkom?

With an average of 7.4h of sunshine, August has the least sunshine of the year in Welkom, South Africa.

What is the least humid month in Welkom?

The least humid month in Welkom, South Africa, is September, with an average relative humidity of 30%.

What month has the most sunshine in Welkom?

With an average of 11.9h of sunshine, November has the most sunshine of the year in Welkom.

When are the longest days in Welkom?

December has the longest days of the year in Welkom, with an average of 13h and 54min of daylight.

Is there Daylight Saving Time (DST) in Welkom?

Welkom does not utilize Daylight Saving Time (DST). SAST timezone is used throughout the entire year.

Average temperature
Welkom, South Africa

Average temperature - Welkom, South Africa

The warmest month (with the highest average high temperature) is January (30.2°C).
The month with the lowest average high temperature is June (17.3°C).

The month with the highest average low temperature is January (18.6°C).
The coldest month (with the lowest average low temperature) is July (5.5°C).

Average pressure
Welkom, South Africa

Average pressure - Welkom, South Africa

The month with the highest atmospheric pressure is July (1025mbar).
The month with the lowest atmospheric pressure is January (1012.4mbar).

Average wind speed
Welkom, South Africa

Average wind speed - Welkom, South Africa

The windiest month (with the highest average wind speed) is November (14.4km/h).
The calmest month (with the lowest average wind speed) is May (9km/h).

Average humidity
Welkom, South Africa

Average humidity - Welkom, South Africa

The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is September (30%).

Average rainfall
Welkom, South Africa

Average rainfall - Welkom, South Africa

The wettest month (with the highest rainfall) is January (33mm).
The driest months (with the least rainfall) are July and August (2mm).

Average rainfall days
Welkom, South Africa

Average rainfall days - Welkom, South Africa

The month with the highest number of rainy days is January (11.9 days).
The month with the least rainy days is July (1.4 days).

Average daylight / Average sunshine
Welkom, South Africa

Average daylight / Average sunshine - Welkom, South Africa

The month with the longest days is December (Average daylight: 13h and 54min).
The month with the shortest days is June (Average daylight: 10h and 24min).

The month with the most sunshine is November (Average sunshine: 11h and 54min).
The month with the least sunshine is August (Average sunshine: 7h and 24min).

Average sunshine days
Welkom, South Africa

Average sunshine days - Welkom, South Africa

The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is February (15.3 days).

Average UV index
Welkom, South Africa

Average UV index - Welkom, South Africa

The months with the highest UV index are January, February, 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
Welkom, South Africa

Average cloud cover - Welkom, South Africa

The months with the most cloud cover are January and February (Cloud cover 19).
The months with the least cloud cover are July and August (Cloud cover 6).

Average visibility
Welkom, South Africa

Average visibility - Welkom, South Africa

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).

Welkom, South Africa

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