, tempered by altitude, with mild, dry winters (during which it can get cold at night) and warm, sunny summers (during which thunderstorms can break out).
The city is located on the South African plateau, at 1,450 meters (4,750 feet), on the banks of the Vaal River, and about 50 km (30 mi) south of Johannesburg. Nearby is the town of Vanderbijlpark.
. Here are the average temperatures.
January is generally a warm month. The average temperature is of
20.5 °C, with a minimum of
14.4 °C and a maximum of
26.6 °C.
On the coldest nights of the month, the temperature usually drops to around
12 °C.
On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
39 °C in January 2016.
Precipitation amounts to
155 mm, distributed over 14 days.
The day lasts on average 13 hours and 35 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 65%.
The average wind speed is of
8 kph.
February is generally a warm month. The average temperature is of
20.7 °C, with a minimum of
14.2 °C and a maximum of
27.1 °C.
On the coldest nights of the month, the temperature usually drops to around
9.5 °C.
On the warmest days of the month, the temperature usually reaches around
31 °C.
Precipitation amounts to
75 mm, distributed over 11 days.
The day lasts on average 13 hours and 0 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 62%.
The average wind speed is of
7.7 kph.
March is generally a warm month. The average temperature is of
18.9 °C, with a minimum of
12.4 °C and a maximum of
25.4 °C.
On the coldest nights of the month, the temperature usually drops to around
8 °C.
On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
32 °C in March 2007.
Precipitation amounts to
80 mm, distributed over 10 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 67%.
The average wind speed is of
6.8 kph.
April is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
15.7 °C, with a minimum of
8.5 °C and a maximum of
22.8 °C.
On the coldest nights of the month, the temperature usually drops to around
2 °C. However, it dropped to
-1 °C in April 2011.
On the warmest days of the month, the temperature usually reaches around
27.5 °C. However, it reached
35 °C in April 2009.
Precipitation amounts to
50 mm, distributed over 7 days.
The day lasts on average 11 hours and 25 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 56%.
The average wind speed is of
6.5 kph.
May is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of
12.3 °C, with a minimum of
4 °C and a maximum of
20.5 °C.
On the coldest nights of the month, the temperature usually drops to around
-1 °C. However, it dropped to
-5 °C in May 2007.
On the warmest days of the month, the temperature usually reaches around
25.5 °C. However, it reached
28 °C in May 2012.
Precipitation amounts to
13 mm, distributed over 3 days.
The day lasts on average 10 hours and 50 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 84% of the time.
The average humidity is 50%.
The average wind speed is of
7.7 kph.
June, the coldest month of the year, is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of
9.5 °C, with a minimum of
0.7 °C and a maximum of
18.4 °C.
On the coldest nights of the month, the temperature usually drops to around
-3.5 °C. However, it dropped to
-7 °C in June 2014.
On the warmest days of the month, the temperature usually reaches around
23 °C. However, it reached
25 °C in June 2010.
Precipitation amounts to only
7 mm, and all occurs in one day.
The day lasts on average 10 hours and 30 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
There are on average 9 hours of sunshine per day. So, the sun shines 86% of the time.
The average humidity is 50%.
The average wind speed is of
9 kph.
July is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of
9.9 °C, with a minimum of
1.6 °C and a maximum of
18.2 °C.
On the coldest nights of the month, the temperature usually drops to around
-3.5 °C. However, it dropped to
-9 °C in July 2014.
On the warmest days of the month, the temperature usually reaches around
22.5 °C. However, it reached
26 °C in July 2019.
Precipitation amounts to only
3 mm, and all occurs in one day.
The day lasts on average 10 hours and 40 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 87% of the time.
The average humidity is 44%.
The average wind speed is of
8.6 kph.
August is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of
12.4 °C, with a minimum of
3.7 °C and a maximum of
21.2 °C.
On the coldest nights of the month, the temperature usually drops to around
-2 °C. However, it dropped to
-6 °C in August 2012.
On the warmest days of the month, the temperature usually reaches around
26.5 °C. However, it reached
29 °C in August 2012.
Precipitation amounts to only
6 mm, distributed over 2 days.
The day lasts on average 11 hours and 10 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 86% of the time.
The average humidity is 39%.
The average wind speed is of
10.4 kph.
September is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
16.6 °C, with a minimum of
8.2 °C and a maximum of
25 °C.
On the coldest nights of the month, the temperature usually drops to around
1 °C. However, it dropped to
-4 °C in September 2013.
On the warmest days of the month, the temperature usually reaches around
30 °C. However, it reached
32 °C in September 2007.
Precipitation amounts to
20 mm, distributed over 3 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 79% of the time.
The average humidity is 36%.
The average wind speed is of
11 kph.
October is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
19.3 °C, with a minimum of
12.1 °C and a maximum of
26.5 °C.
On the coldest nights of the month, the temperature usually drops to around
4.5 °C.
On the warmest days of the month, the temperature usually reaches around
32.5 °C. However, it reached
35 °C in October 2016.
Precipitation amounts to
70 mm, distributed over 9 days.
The day lasts on average 12 hours and 50 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 46%.
The average wind speed is of
12 kph.
November is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
20.1 °C, with a minimum of
13.6 °C and a maximum of
26.6 °C.
On the coldest nights of the month, the temperature usually drops to around
8 °C. However, it dropped to
5 °C in November 2015.
On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
36 °C in November 2015.
Precipitation amounts to
100 mm, distributed over 12 days.
The day lasts on average 13 hours and 25 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 52%.
The average wind speed is of
11.7 kph.
December is generally a warm month. The average temperature is of
21.4 °C, with a minimum of
15.5 °C and a maximum of
27.4 °C.
On the coldest nights of the month, the temperature usually drops to around
11.5 °C.
On the warmest days of the month, the temperature usually reaches around
33 °C.
Precipitation amounts to
120 mm, distributed over 15 days.
The day lasts on average 13 hours and 50 minutes. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.
There are on average 9 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 58%.
The average wind speed is of
10.6 kph.