easeweather.com

Weather in South Africa for September 2025

Your guide to South Africa weather in September - trends and predictions

    Temperatures

  • So far, September 2025 in South Africa shows a warmer trend than usual by 2.2 °C.

  • The forecast for the next days in South Africa predicts temperatures to be around 18 °C, close to the historical average.

  • In general, the average temperature in South Africa at the beginning of September is 17.3 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 19.4 °C by the end of September.

  • Rain 🌧️

  • The climate of South Africa in September is notably wet, with an average of 12 rainy days, and a total of 63.5 mm of precipitation.

  • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/10°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
68 %
Avg humidity

South Africa Weather September

Move between months or click on a day

Temperatures trend during September in South Africa

See the weather trend as well as the moving average line

September weather in South Africa day by day

Click on a date for more information
Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
18° /9° 0.1 mm 5
2 Sept. Sunny
Sunny
20° /10° 1.7 mm 6
3 Sept. Patchy rain possible
Patchy rain possible
17° /10° 1.2 mm 5
4 Sept. Partly cloudy
Partly cloudy
17° /9° 3.1 mm 5
5 Sept. Patchy rain possible
Patchy rain possible
15° /10° 6.1 mm 4
6 Sept. Patchy rain possible
Patchy rain possible
16° /9° 0 mm 5
7 Sept. Sunny
Sunny
18° /8° 0 mm 6
8 Sept. Partly cloudy
Partly cloudy
19° /9° 0.1 mm 5
9 Sept. Sunny
Sunny
22° /10° 0.1 mm 6
10 Sept. Sunny
Sunny
19° /10° 4.4 mm 6
11 Sept. Sunny
Sunny
18° /9° 4.1 mm 5
12 Sept. Sunny
Sunny
17° /9° 0.4 mm 5
13 Sept. Sunny
Sunny
19° /9° 0 mm 6
14 Sept. Patchy rain possible
Patchy rain possible
19° /10° 0 mm 5
15 Sept. Patchy rain possible
Patchy rain possible
16° /12° 2.7 mm 1.4
16 Sept. Patchy rain possible
Patchy rain possible
16° /12° 2.6 mm 1.3
17 Sept. Patchy rain possible
Patchy rain possible
15° /12° 0.2 mm 1.5
18 Sept. Sunny
Sunny
16° /11° 0.1 mm 1.9
19 Sept. Partly cloudy
Partly cloudy
19° /12° 0 mm 5
20 Sept. Overcast
Overcast
19° /14° 0 mm 5
21 Sept. Patchy rain possible
Patchy rain possible
19° /13° 0.2 mm 5
22 Sept. Patchy rain possible
Patchy rain possible
17° /13° 3.7 mm 4
23 Sept. Sunny
Sunny
17° /13° 0 mm 5
24 Sept. Sunny
Sunny
18° /13° 0 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
19° /15° 0.1 mm 5
26 Sept. Sunny
Sunny
21° /14° 0 mm 6
27 Sept. Sunny
Sunny
21° /15° 0 mm 6
28 Sept. Partly cloudy
Partly cloudy
20° /10° 2.2 mm 6
29 Sept. Sunny
Sunny
19° /12° 1.6 mm 6
30 Sept. Light rain shower
Light rain shower
18° /11° 4.5 mm 5
Next
Important Notice
Our weather forecast for South Africa in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the South Africa forecast closer to your planned date for the most up-to-date weather information.

Guide for South Africa in September

In September, South Africa experiences a transition from winter to spring, resulting in varied weather conditions across the country.

At the beginning of the month, the Western Cape, including Cape Town, can still have cool and wet conditions, with temperatures averaging around 15° and occasional rain showers.

In contrast, the northeastern regions, such as Kruger National Park, tend to be drier and warmer, with temperatures around 22° and plenty of sunshine.

As the month progresses, the weather in South Africa generally becomes milder and more pleasant. By the end of September, the Western Cape sees an increase in temperatures to around 18°, with fewer rainy days and more sunny spells.

In the northeastern regions, the temperatures may rise to around 25°, creating ideal conditions for wildlife viewing and outdoor activities.

Overall, September is a great time to visit South Africa, as the country begins to emerge from the winter chill, and the landscapes come alive with blooming flowers and lush vegetation.

Whether you're exploring the vibrant cities, embarking on a safari, or enjoying the stunning coastal scenery, South Africa offers diverse and captivating experiences during this time of year.

South Africa in September - FAQ

What are the expected maximum and minimum temperatures in South Africa during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in South Africa during September?
Moderate rainfall is anticipated in South Africa during September, with a total of 63.5 mm spread over approximately 12 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in South Africa during September?
The average wind speed in South Africa during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

South Africa water temperatures in September

The average water temperature of the Atlantic Ocean near South Africa in September is 12.6 °C. Temperatures remain fairly consistent throughout the month.

What is the water temperature in South Africa in September?
The average water temperature in South Africa in September is 12.6 °C.
Can you swim in South Africa in September?
Cold enough that you lose heat fast. A full 4–5 mm wetsuit (plus hood/gloves for comfort) is advisable for anything beyond a brief plunge.

September rainfall patterns in South Africa

Explore the daily rainfall trends and prepare for South Africas September weather 💧

UV exposure in South Africa during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Regions in South Africa
Choose a region for an accurate weather forecasts
Top locations in South Africa
Select a location for an accurate weather forecast
More Locations

Quick links

More South Africa weather pages
Location coordinates Where is South Africa?

Get accurate weather forecasts for South Africa, located at latitude -33.926 and longitude 18.423. Stay updated with localized weather information tailored for South Africa.

Found a mistake?
We appreciate your attention to details. Tell us here.