easeweather.com
Johannesburg
BallitoBenoniBloemfonteinBoksburgBotshabeloBrakpanBritsBronkhorstspruitCape TownCenturionCeresClarensDenniltonDrakensberg GardenDurbanEast LondonElandsfonteinEmpangeniGermistonGrahamstownHammanskraalHarrismithHeidelbergHermanusHoedspruitHowickJeffreys Bay
Johannesburg
Johannesburg SouthKempton ParkKimberleyKlerksdorpKnysnaKroonstadKruger National ParkKrugersdorpMahikengMalmesburyMargateMiddelburgModimolleMossel BayMthathaMtubatubaNelspruitNewcastlePiet RetiefPietermaritzburgPolokwanePort ElizabethPretoriaQueensburghQueenstownRandburgRandvaalRichards BayRoodepoortRustenburgSoshanguveSouthbroomSowetoSpringbokSteelpoortStellenboschSterkspruitTembisaThabazimbiThohoyandouTzaneenUitenhageUlundiUnderbergUpingtonVereenigingVryburgVryheidWelkomWellingtonWitbankWorcester More Locations
South Africa weather

Weather in Johannesburg for September 2025

Your guide to Johannesburg weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Johannesburg has been nearly identical to the historical average, with a temperature of 26.8 °C (showing only a slight deviation of 0.5 °C).

  • The forecast for the upcoming days in Johannesburg predicts a temperature of 28 °C, which is slightly above the historical average.

  • In general, the average temperature in Johannesburg at the beginning of September is 26.1 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 28.4 °C by the end of September.

    • Rain 🌧️

  • Precipitation in Johannesburg during September is a rare event, with an average of fewer than 2 rainy days.

    • More

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

Average dry days
29
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/13°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
30 %
Avg humidity

Johannesburg Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
25°
2
Sunny
25°
3
Sunny
27°
4
Sunny
27°
5
Sunny
27°
6
Patchy rain possible
27°
7
Sunny
25°
8
Sunny
25°
9
Sunny
27°
10
Sunny
26°
11
Sunny
27°
12
Sunny
27°
13
Sunny
25°
14
Patchy rain possible
25°
15
Sunny
26°
16
Sunny
27°
17
Sunny
25°
18
Sunny
27°
19
Sunny
28°
20
Sunny
30°
21
Sunny
30°
22
Sunny
29°
23
Partly cloudy
29°
24
Sunny
27°
25
Sunny
30°
26
Patchy rain possible
30°
27
Sunny
29°
28
Moderate rain at times
28°
29
Sunny
29°
30
Sunny
26°

Temperatures trend during September in Johannesburg

See the weather trend as well as the moving average line

September weather in Johannesburg day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 25° /11° 0 mm 7
2 Sept. Sunny
Sunny
 25° /12° 0 mm 7
3 Sept. Sunny
Sunny
 27° /14° 0 mm 8
4 Sept. Sunny
Sunny
 27° /14° 0 mm 8
5 Sept. Sunny
Sunny
 27° /14° 0.1 mm 7
6 Sept. Patchy rain possible
Patchy rain possible
 27° /14° 0.5 mm 7
7 Sept. Sunny
Sunny
 25° /12° 0.8 mm 7
8 Sept. Sunny
Sunny
 25° /13° 0.1 mm 7
9 Sept. Sunny
Sunny
 27° /13° 0.2 mm 7
10 Sept. Sunny
Sunny
 26° /13° 0 mm 7
11 Sept. Sunny
Sunny
 27° /12° 0 mm 8
12 Sept. Sunny
Sunny
 27° /13° 0 mm 8
13 Sept. Sunny
Sunny
 25° /12° 0 mm 7
14 Sept. Patchy rain possible
Patchy rain possible
 25° /18° 0.9 mm 1.5
15 Sept. Sunny
Sunny
 26° /16° 0 mm 2.1
16 Sept. Sunny
Sunny
 27° /18° 0 mm 2.2
17 Sept. Sunny
Sunny
 25° /13° 0 mm 2.3
18 Sept. Sunny
Sunny
 27° /16° 0 mm 3.3
19 Sept. Sunny
Sunny
 28° /19° 0 mm 7
20 Sept. Sunny
Sunny
 30° /20° 0 mm 7
21 Sept. Sunny
Sunny
 30° /21° 0 mm 8
22 Sept. Sunny
Sunny
 29° /19° 0 mm 7
23 Sept. Partly cloudy
Partly cloudy
 29° /19° 0 mm 7
24 Sept. Sunny
Sunny
 27° /17° 0 mm 7
25 Sept. Sunny
Sunny
 30° /19° 0 mm 7
26 Sept. Patchy rain possible
Patchy rain possible
 30° /19° 0.3 mm 6
27 Sept. Sunny
Sunny
 29° /19° 0.1 mm 7
28 Sept. Moderate rain at times
Moderate rain at times
 28° /15° 0.7 mm 8
29 Sept. Sunny
Sunny
 29° /15° 0.7 mm 8
30 Sept. Sunny
Sunny
 26° /14° 0.8 mm 7
Next
Important Notice
Our weather forecast for Johannesburg 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 Johannesburg forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Johannesburg in September - FAQ

What are the expected maximum and minimum temperatures in Johannesburg during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Johannesburg during September?
Rainfall in Johannesburg during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Johannesburg during September?
The average wind speed in Johannesburg during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

UV exposure in Johannesburg during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

More Johannesburg weather pages
You are here
Location coordinates Where is Johannesburg?

Get accurate weather forecasts for Johannesburg, located at latitude -26.202 and longitude 28.044. Stay updated with localized weather information tailored for Johannesburg.

Related locations
Select a location for accurate weather forecast
Cape TownDurbanJohannesburg SouthPretoriaSteelpoort
More Locations
Found a mistake?
We appreciate your attention to details. Tell us here.