Hermanus

Western Cape Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Western Cape, South Africa in September.

Considering a trip to Western Cape, South Africa this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Western Cape in September

Western Cape, South Africa is a region in South Africa. September in Western Cape generally has temperatures that range from mild to warm, with precipitation levels ranging from low to moderate.

Temperatures

The average maximum daytime temperatures vary from mild in Kommetjie at 17°C (63°F) to warm in Merweville at 24°C (75°F). Nighttime temperatures generally drop to 9°C (48°F) in Merweville and 14°C (57°F) in Kommetjie.

For specific regional insights in Western Cape, South Africa, refer to the map provided below.

Precipitation

In September, precipitation varies across different areas. From low rainfall in Merweville with an average of 9.9 mm (0.4 in) to moderate rainfall in Paarl with 80 mm (3.1 in).

Average sunshine

September brings good sunshine to many areas. Cape Town sees around 225 hours of sunlight, great for visitors looking for bright days.

Explore Western Cape by month

Pick a month to see the average temperature, rainfall and sunshine in Western Cape — and find the best time to visit. (based on Cape Town)

Best Places to Visit in Western Cape in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Western Cape.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Western Cape

What is the weather like in September for some of the most popular destinations in Western Cape, South Africa?

Temperature range in Western Cape (September)

Precipitation variation in Western Cape (September)

Cape Town

In September Cape Town generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 11°C (52°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
17°C (63°F)
18°C (64°F)
20°C (68°F)
Min temperature
10°C (50°F)
11°C (52°F)
13°C (55°F)
Monthly sun hours
212 hours
225 hours
278 hours
Monthly rainfall
98 mm (3.9 in)
63 mm (2.5 in)
41 mm (1.6 in)
Monthly rainy days
13 days
10 days
8 days
Weather conditions

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.

August
September
October
Max temperature
18°C (64°F)
19°C (66°F)
20°C (68°F)
Min temperature
11°C (52°F)
12°C (54°F)
14°C (57°F)
Monthly sun hours
260 hours
255 hours
300 hours
Monthly rainfall
67 mm (2.6 in)
55 mm (2.2 in)
65 mm (2.6 in)
Monthly rainy days
10 days
11 days
13 days
Weather conditions

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.

August
September
October
Max temperature
18°C (64°F)
19°C (66°F)
22°C (72°F)
Min temperature
8°C (46°F)
9°C (48°F)
11°C (52°F)
Monthly sun hours
212 hours
225 hours
278 hours
Monthly rainfall
105 mm (4.1 in)
74 mm (2.9 in)
50 mm (2 in)
Monthly rainy days
13 days
11 days
9 days
Weather conditions

Hermanus

In September Hermanus generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 11°C (52°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
17°C (63°F)
18°C (64°F)
20°C (68°F)
Min temperature
10°C (50°F)
11°C (52°F)
13°C (55°F)
Monthly rainfall
78 mm (3.1 in)
56 mm (2.2 in)
47 mm (1.9 in)
Monthly rainy days
13 days
10 days
9 days
Weather conditions

Plettenberg Bay

In September Plettenberg Bay generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 13°C (55°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
18°C (64°F)
19°C (66°F)
20°C (68°F)
Min temperature
12°C (54°F)
13°C (55°F)
14°C (57°F)
Monthly sun hours
260 hours
255 hours
300 hours
Monthly rainfall
71 mm (2.8 in)
56 mm (2.2 in)
65 mm (2.6 in)
Monthly rainy days
10 days
10 days
12 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Western Cape, in South Africa.

Popular cities in September

Day & night temperatures, rainfall and average weather in Western Cape in September.

City Weather Day temp Night temp Rainfall
Cape Town 18°C (64°F) 11°C (52°F) 63 mm (2.5 in)
Knysna 19°C (66°F) 12°C (54°F) 55 mm (2.2 in)
Stellenbosch 19°C (66°F) 9°C (48°F) 74 mm (2.9 in)
Hermanus 18°C (64°F) 11°C (52°F) 56 mm (2.2 in)
Plettenberg Bay 19°C (66°F) 13°C (55°F) 56 mm (2.2 in)
Bloubergstrand 19°C (66°F) 11°C (52°F) 50 mm (2 in)

Western Cape weather in September: frequently asked questions

What is the weather like in Western Cape, South Africa in September?

In September, Western Cape, South Africa generally has pleasant weather conditions. Cape Town sees daytime temperatures near 18°C (64°F), with nights cooling to roughly 11°C (52°F).

What is the average temperature in Western Cape, South Africa in September?

Average temperatures in Western Cape, South Africa during September range from a nighttime low near 11°C (52°F) to a daytime high around 18°C (64°F) in Cape Town.

Does Western Cape, South Africa get a lot of rain in September?

Not particularly. Cape Town averages just 63 mm (2.5 in) of rain in September, making it a mostly dry month for Western Cape, South Africa.

Is September a Good Time to Visit Western Cape, South Africa?

Given the typically pleasant weather conditions in Cape Town, September might be a good time to visit Western Cape, South Africa. However, the weather conditions may vary depending on your destination.

On average, the best time to visit Western Cape, South Africa is in January, February, March, April, May, October, November and December with generally perfect weather in Cape Town. In contrast, July tends to have unpleasant weather conditions.

Interested in more climate information?

We have much more information about the climate in Western Cape.

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 travel conditions. Find out where to go with our weather planner.

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