Vaalbank weather in September

In September, Vaalbank sees average daytime highs of 28°C and overnight lows near 14°C, with 14 mm of rain across 2 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 27°C in the first days to 29°C by the end. The sky is clear or mostly clear about 77% 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 Vaalbank's 5th-clearest and 2nd-windiest month. For the whole year in context, see Vaalbank's year-round climate.

Daytime high
28°
7th warmest
Overnight low
14°
5th coldest
Rainfall
14 mm
2 wet days
Daylight
11 h 54 min
6:03 AM – 5:55 PM
Cloud cover
23%
5th clearest
Wind
10 km/h
2nd windiest
Solar energy
6.02 kWh/m²
Travel score
7.7
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 27°C in the first days to 29°C by the end.

A typical September day in Vaalbank reaches about 28°C in the afternoon and slips back to 14°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 33°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)
12712
22712
32712
42712
52712
62713
72713
82813
92813
102813
112813
122813
132814
142814
152814
162814
172814
182914
192914
202914
212915
222915
232915
242915
252915
262915
272915
282915
292915
302915

Vaalbank 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
Jan30° / 19°9413.613.44.8
Feb30° / 19°789.812.95.2
Mar28° / 18°68912.26.3
Apr26° / 15°304.811.47.8
May24° / 10°132.110.89.0
Jun22° / 50.910.58.9
Jul22° / 30.410.69.0
Aug25° / 10°41.111.19.2
Sep28° / 14°14211.87.7
Oct29° / 16°497.512.66.0
Nov29° / 17°7811.113.25.3
Dec29° / 19°9113.913.54.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 77% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 10% of September, with mostly cloudy or overcast conditions the remaining 13%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1919
29010
3919
4919
5919
69010
79010
89010
98911
108812
118812
128812
138713
148713
158713
168614
178614
188614
198614
208515
218515
228515
238515
248515
258515
268416
278317
288317
298218
308218

Chance of precipitation in September

Any precipitation

Vaalbank gets around 14 mm of rain over 2 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 7% and peaks near 14% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
15
25
35
45
56
66
76
86
96
106
116
126
136
146
156
166
176
186
196
206
217
227
238
249
2510
2610
2711
2812
2913
3014

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 99% 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
20991
21991
22991
23982
24973
25973
26964
27955
28946
29928
30919

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 6:20 AM to 5:48 AM, and sunset from 5:49 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:205:49
211.56:195:49
311.56:185:50
411.66:175:50
511.66:165:50
611.66:145:51
711.66:135:51
811.76:125:51
911.76:115:52
1011.76:105:52
1111.76:095:53
1211.86:085:53
1311.86:075:53
1411.86:065:54
1511.86:045:54
1611.96:035:55
1711.96:025:55
1811.96:015:55
1911.96:005:56
2012.05:595:56
2112.05:585:56
2212.05:565:57
2312.05:555:57
2412.15:545:58
2512.15:535:58
2612.15:525:58
2712.15:515:59
2812.25:505:59
2912.25:496:00
3012.25:486:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.02 kWh/m².

For context, solar energy here swings from a low near 3.96 kWh/m² to a high of 6.7 kWh/m² in December across the year — September's 6.02 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.7Bright
45.7Bright
55.7Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.9Bright
115.9Bright
125.9Bright
136.0Bright
146.0Bright
156.0Intense
166.0Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Vaalbank

In seasonPeak

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

Vaalbank'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 Vaalbank?

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

7.7
Sightseeing
6th-best month of the year
8.7
Beach & pool
1st-best month of the year

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

What to pack for Vaalbank in September

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

In September, Vaalbank sees daytime highs around 28°C and nights near 14°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Vaalbank 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 Vaalbank peaks around January 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 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 13UV 14Jun 17UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr8Very high
May6High
Jun5Moderate
Jul6High
Aug7Very high
Sep9Very high
Oct10Extreme
Nov11Extreme
Dec14Extreme

Air quality in Vaalbank 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 Vaalbank is worst in July — around 188 µg/m³ PM2.5 (very unhealthy), about 6.6× the cleanest month (January, 29 µg/m³).

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

0306090120150180210JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyVery unhealthyUnhealthyPoorJul 10187 µg/m³Jan 1229 µg/m³
PM2.5 (µg/m³)Level
Jan29Moderate
Feb43Poor
Mar67Unhealthy
Apr114Unhealthy
May169Very unhealthy
Jun185Very unhealthy
Jul188Very unhealthy
Aug142Unhealthy
Sep108Unhealthy
Oct62Unhealthy
Nov43Poor
Dec32Moderate
Location & terrain

Where is Vaalbank?

Vaalbank sits at 25.2°S, 28.9°E, 983 m above sea level, in South Africa. The nearest listed city is Siyabuswa, 20 km away.

Topography around Vaalbank

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

Within 3 km, the terrain around Vaalbank has only modest variations in elevation — a maximum elevation change of 62 m around an average of 965 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 518 m; within 80 km, large variations in elevation — a maximum elevation change of 900 m.

The land around Vaalbank is covered by shrubs (52%) within 3 km, shrubs (56%) and grassland (26%) within 16 km, and grassland (40%) and shrubs (34%) within 80 km.

3 km
62 m
16 km
518 m
80 km
900 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Siyabuswa 20 km · Kwaggafontein 21 km · Somaroboro 22 km · Moloto South 40 km · Verena 41 km · Ekangala 59 km · Hammanskraal 64 km · Bela Bela 65 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 Vaalbank (-25.1523°, 28.8556°, elevation 983 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).