South Africa weather in September

Are you planning a trip to South Africa in September and wondering what kind of weather to expect? This page has all the details you need.

What is the weather like in South Africa in September?

Weather in South Africa varies in September, with temperatures ranging from moderate to very warm and precipitation ranging from almost none to moderate.

The average maximum temperatures vary from moderate in Kommetjie at 17°C (62°F) to very warm in Kruger National Park at 31°C (89°F). Nighttime temperatures generally drop to 18°C (64°F) in Kruger National Park and 14°C (56°F) in Kommetjie.

Precipitation in September varies from almost no rainfall in Kotzeshoop with an average of 4.2mm (0.2 inches) to moderate rainfall in Port Saint Johnʼs with 88mm (3.5 inches). It is also generally a sunny time of year with an average of 225 hours of sunshine in Cape Town during the entire month.

For more details on the yearly weather and climate conditions, visit our South Africa climate page. To learn more about the weather conditions in specific areas of South Africa in September, check out the map below.

Where to go in South Africa in September

Find the average weather conditions in September for the most popular destinations in South Africa on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

Popular destinations in South Africa

What is the weather like in September for the 5 most popular destinations in South Africa?

Average weather in Cape Town

In September Cape Town generally has pleasant temperatures with maximum daytime temperatures around 18°C (65°F), minimum nighttime temperatures around 11°C (52°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

Cape Town
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
17°C / 63°F 
10°C / 50°F 
212 hours 
98mm / 3.8" 
13 days 
18°C / 65°F 
11°C / 52°F 
225 hours 
63mm / 2.5" 
10 days 
October   >> October
>>  
20°C / 69°F 
13°C / 56°F 
278 hours 
41mm / 1.6" 
8 days 
Climate in Cape Town

Average weather in Johannesburg

In September Johannesburg generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 11°C (52°F) and low monthly rainfall. So on average the conditions are perfect that month.

Johannesburg
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
22°C / 72°F 
7°C / 44°F 
284 hours 
10mm / 0.4" 
2 days 
26°C / 79°F 
11°C / 52°F 
281 hours 
24mm / 1" 
3 days 
October   >> October
>>  
27°C / 80°F 
13°C / 56°F 
270 hours 
77mm / 3" 
9 days 
Climate in Johannesburg

Average weather in Durban

In September Durban generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 17°C (62°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

Durban
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
24°C / 74°F 
15°C / 60°F 
216 hours 
40mm / 1.6" 
6 days 
24°C / 75°F 
17°C / 62°F 
173 hours 
68mm / 2.7" 
10 days 
October   >> October
>>  
24°C / 75°F 
18°C / 64°F 
169 hours 
97mm / 3.8" 
14 days 
Climate in Durban

Average weather in Knysna

In September Knysna generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 12°C (54°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

Knysna
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
18°C / 65°F 
11°C / 52°F 
260 hours 
67mm / 2.6" 
10 days 
19°C / 66°F 
12°C / 54°F 
255 hours 
55mm / 2.1" 
11 days 
October   >> October
>>  
20°C / 68°F 
14°C / 56°F 
300 hours 
65mm / 2.6" 
13 days 
Climate in Knysna

Average weather in Stellenbosch

In September Stellenbosch generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

Stellenbosch
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
18°C / 64°F 
8°C / 46°F 
212 hours 
105mm / 4.1" 
13 days 
19°C / 66°F 
9°C / 48°F 
225 hours 
74mm / 2.9" 
11 days 
October   >> October
>>  
22°C / 71°F 
11°C / 52°F 
278 hours 
50mm / 1.9" 
9 days 
Climate in Stellenbosch

Is your destination not in the list? Have a look at other destinations in South Africa.

Is September the best time to go to South Africa?

In our opinion September is a good time to visit South Africa with commonly pleasant weather in Cape Town. However, the weather conditions may vary depending on your destination.

On average the best time to visit South Africa is in January, February, March, April, May, October, November and December with generally perfect weather in Cape Town. The worst month is July that can have unpleasant weather conditions.

Interested in more climate information?

We have much more information about the climate in South Africa. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to South Africa? Get detailed historical weather averages for many cities in South Africa.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.