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January is the peak of Johannesburg’s summer and also the warmest month of the year. The average high temperature peaks at 79°F (26°C) while the average low temperature hits 57°F (14°C). Rainfall is quite high this month with 5 inches (128 mm) for the precipitation rate.
In February, the temperatures remain exactly the same at 57°F (14°C) for the low temperature average and 79°F (26°C) for the high temperature average.
Johannesburg Weather in March: Autumn arrives in Johannesburg in March along with cooler temperatures. Both the average low and average high temperatures decrease by a couple of degrees to 55°F (13°C) and 77°F (25°C) respectively.
April sees temperature decreasing further with the high temperature average falling to 73°F (23°C). The low temperature average decreases significantly to 49°F (10°C). Average rainfall for the month of April falls to 2 inches (40 mm).
In May, the final month of autumn, the low and high temperature averages range between 43°F (6°C) and 68°F (20°C).
Johannesburg Weather in June: Winter comes to Johannesburg in June bringing with it an average high temperature of 64°F (18°C). The average low temperature takes a 5-degree drive to 38°F (3°C).
July is the coldest and driest month of the year in Johannesburg with a peak low temperature average of 37°F (3°C). The high temperature average holds steady at 64°F (18°C). The precipitation average is just above 0 inches (40 mm).
In August, the temperatures begin to increase again as winter comes to an end. The average high temperature increases by 5 degrees to 69°F (21°C). Similarly, the average low temperature rises by the same amount to 42°F (5°C).
Johannesburg Weather in September: The beautiful spring season comes to Johannesburg in September. This month sees a quick increase in average high temperatures to 76°F (25°C) alongside the average low temperature which rises to 48°F (9°C).
October brings about 3 inches (79 mm) of rainfall to Johannesburg. The low temperature average and high temperature average both see increases to 52°F (11°C) and 78°F (26°C) respectively.
In November, the average high temperature holds steady at 78°F (26°C). On the other hand, the average low temperature increases by a few degrees to 52°F (11°C).
Johannesburg Weather in December: The arrival of summer in December brings with it the highest precipitation averages of the year. Johannesburg receives 6 inches (151 mm) of rain this month alongside an average high temperature of 79°F (26°C). Low temperature averages hover at 56°F (14°C).
For warm weather and mild climates, the best time to visit the beautiful city of Johannesburg is during the summer months of December through February. On the other hand, for travelers looking for a balance of the great deals, fantastic weather and a low volume of tourists should plan their trips between the months of March to May. The absolute best deals, however, can be enjoyed during the winter months of June to August when the tourist season dies down and the temperatures drop. To enjoy the best of Johannesburg’s festivals, fairs and events, visit the city in its spring season between September and November.
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