Diepsloot weather in September

In September, Diepsloot sees average daytime highs of 25°C and overnight lows near 11°C, with 19 mm of rain across 2.8 wet days and about 11.8 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 26°C by the end. The sky is clear or mostly clear about 74% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Diepsloot's 5th-clearest and 1st-windiest month. For the whole year in context, see Diepsloot's year-round climate.

Daytime high
25°
7th warmest
Overnight low
11°
5th coldest
Rainfall
19 mm
2.8 wet days
Daylight
11 h 48 min
6:07 AM – 5:58 PM
Cloud cover
25%
5th clearest
Wind
12 km/h
1st windiest
Solar energy
6.05 kWh/m²
Travel score
8.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 26°C by the end.

A typical September day in Diepsloot reaches about 25°C in the afternoon and slips back to 11°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 29°C. Set against its neighbours, September runs about 4°C warmer than August and about 1°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1249
2249
32410
42410
52410
62410
72410
82510
92510
102511
112511
122511
132511
142511
152511
162511
172511
182511
192512
202512
212612
222612
232612
242612
252612
262612
272612
282612
292612
302613

Diepsloot weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 17°10715.113.45.9
Feb27° / 16°9712.412.96.2
Mar25° / 15°8011.112.26.9
Apr23° / 12°376.411.47.7
May21° / 142.610.78.4
Jun19° / 71.110.48.2
Jul19° / 20.610.58.3
Aug22° / 81.411.18.8
Sep25° / 11°192.811.88.6
Oct26° / 14°619.312.67.1
Nov26° / 15°8512.613.36.3
Dec26° / 16°11716.513.65.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 74% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
19010
29010
39010
48911
59010
68911
78911
88812
98812
108812
118812
128614
138614
148614
158515
168515
178416
188317
198317
208317
218218
228218
238218
248119
258119
268119
278020
288020
298020
307921

Chance of precipitation in September

Any precipitation

Diepsloot gets around 19 mm of rain over 2.8 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 10% and peaks near 19% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
17
27
37
48
58
68
78
88
98
108
118
128
139
149
159
169
179
189
199
2010
2110
2211
2311
2412
2513
2614
2715
2816
2917
3019

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
24991
25991
26991
27991
28982
29982
30973

Wind in September

Winds average 12 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over September. Sunrise moves from 6:24 AM to 5:51 AM, and sunset from 5:52 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:245:52
211.56:235:52
311.56:225:52
411.56:205:53
511.66:195:53
611.66:185:54
711.66:175:54
811.66:165:54
911.76:155:55
1011.76:145:55
1111.76:135:56
1211.76:115:56
1311.86:105:57
1411.86:095:57
1511.86:085:57
1611.86:075:58
1711.96:065:58
1811.96:045:59
1911.96:035:59
2012.06:025:59
2112.06:016:00
2212.06:006:00
2312.05:596:01
2412.15:586:01
2512.15:566:02
2612.15:556:02
2712.15:546:02
2812.25:536:03
2912.25:526:03
3012.25:516:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.05 kWh/m².

For context, solar energy here swings from a low near 3.92 kWh/m² to a high of 6.78 kWh/m² in December across the year — September's 6.05 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.7Bright
35.7Bright
45.7Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.9Bright
105.9Bright
115.9Bright
126.0Bright
136.0Bright
146.0Intense
156.0Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.4Intense
306.4Intense
Planning a trip in September

Hazard calendar for Diepsloot

In seasonPeak

None of Diepsloot's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Diepsloot's rainy season runs October–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Diepsloot?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.6
Sightseeing
2nd-best month of the year
7.6
Beach & pool
1st-best month of the year

September is one of the better times to visit Diepsloot for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Diepsloot in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Diepsloot sees daytime highs around 25°C and nights near 11°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

UV index in Diepsloot in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Diepsloot peaks around January 1 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 5 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 1UV 14Jun 18UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5Moderate
Jul6High
Aug7Very high
Sep9Very high
Oct11Extreme
Nov12Extreme
Dec14Extreme

Air quality in Diepsloot in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Diepsloot is worst in June — around 283 µg/m³ PM2.5 (very unhealthy), about 5.7× the cleanest month (January, 50 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0306090120150180210240270300JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyVery unhealthyUnhealthyJun 19282 µg/m³Jan 1251 µg/m³
PM2.5 (µg/m³)Level
Jan50Poor
Feb72Unhealthy
Mar119Unhealthy
Apr177Very unhealthy
May261Very unhealthy
Jun283Very unhealthy
Jul275Very unhealthy
Aug213Very unhealthy
Sep156Very unhealthy
Oct99Unhealthy
Nov70Unhealthy
Dec55Poor
Location & terrain

Where is Diepsloot?

Diepsloot sits at 25.9°S, 28.0°E, 1,410 m above sea level, in South Africa. The nearest listed city is Midrand, 12 km away.

Topography around Diepsloot

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Diepsloot.

Within 3 km, the terrain around Diepsloot has only modest variations in elevation — a maximum elevation change of 187 m around an average of 1,416 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 443 m; within 80 km, large variations in elevation — a maximum elevation change of 934 m.

The land around Diepsloot is covered by grassland (56%) and artificial surfaces (26%) within 3 km, grassland (58%) and artificial surfaces (21%) within 16 km, and grassland (52%) within 80 km.

3 km
187 m
16 km
443 m
80 km
934 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Midrand 12 km · Randburg 18 km · Midstream 19 km · Centurion 19 km · Ivory Park 20 km · Alexandra 21 km · Thembisa 23 km · Hartbeespoort 27 km

South Africa travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / M / N
230 V · 50 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$6,598
2025
Happiness
5.0 / 10
World Happiness, 2025
Safe drinking water
68%
of population, 2024
Homicide rate
43.7
per 100k, 2022
Road deaths
22.2
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very high
EF EPI 602
Religion
Christian 86%or other traditional African religions 5%nothing in particular 5%Muslim 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Diepsloot (-25.9331°, 28.0121°, elevation 1,410 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).