Bultfontein weather in September

In September, Bultfontein sees average daytime highs of 26°C and overnight lows near 9°C, with 14 mm of rain across 2.5 wet days and about 11.8 hours of daylight. It is the 7th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 27°C by the end. The sky is clear or mostly clear about 71% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 24 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Bultfontein's 5th-clearest and 4th-windiest month. For the whole year in context, see Bultfontein's year-round climate.

Daytime high
26°
7th warmest
Overnight low
5th coldest
Rainfall
14 mm
2.5 wet days
Daylight
11 h 48 min
6:15 AM – 6:05 PM
Cloud cover
25%
5th clearest
Wind
12 km/h
4th windiest
Solar energy
6.14 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 27°C by the end.

A typical September day in Bultfontein reaches about 26°C in the afternoon and slips back to 9°C overnight — a 17°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 31°C. Set against its neighbours, September runs about 4°C warmer than August and about 2°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1247
2247
3247
4248
5258
6258
7258
8258
9258
10259
11259
12259
13269
14269
15269
16269
17269
182610
192610
202610
212610
222610
232610
242610
252610
262710
272711
282711
292711
302711

How September really feels in Bultfontein

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Bultfontein weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 18°8412.113.64.8
Feb29° / 17°7110.5135.3
Mar28° / 15°6810.112.26.5
Apr24° / 11°446.911.37.8
May22° / 203.110.68.3
Jun19° / 111.710.28.0
Jul19° / 7110.48.2
Aug21° / 162.1118.6
Sep26° / 142.511.88.6
Oct28° / 13°456.912.77.1
Nov29° / 15°658.213.46.0
Dec30° / 16°7811.513.84.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 71% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 16%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
19010
28911
38911
48911
58812
68713
78713
88713
98713
108614
118515
128515
138515
148416
158416
168218
178218
188218
198218
208218
218119
228119
238119
248119
258119
268119
278119
288020
298020
308020

Chance of precipitation in September

Any precipitation

Bultfontein gets around 14 mm of rain over 2.5 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 9% and peaks near 15% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
17
27
37
47
57
67
77
88
98
108
118
128
138
148
158
168
178
189
199
209
219
2210
2310
2410
2511
2612
2712
2813
2914
3015

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
241000
25991
26991
27991
28991
29991
30991

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2613light breeze
2713light breeze
2813light breeze
2912light breeze
3012light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 24 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 48 minutes over September. Sunrise moves from 6:33 AM to 5:58 AM, and sunset from 5:57 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:335:57
211.46:325:58
311.56:315:58
411.56:295:59
511.56:285:59
611.56:276:00
711.66:266:00
811.66:256:01
911.66:236:01
1011.76:226:02
1111.76:216:02
1211.76:206:03
1311.76:186:03
1411.86:176:04
1511.86:166:04
1611.86:156:05
1711.96:136:05
1811.96:126:06
1911.96:116:06
2011.96:106:07
2112.06:096:07
2212.06:076:08
2312.06:066:08
2412.16:056:09
2512.16:046:09
2612.16:026:10
2712.26:016:10
2812.26:006:11
2912.25:596:11
3012.25:586:12

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.14 kWh/m².

For context, solar energy here swings from a low near 3.69 kWh/m² to a high of 7.67 kWh/m² in December across the year — September's 6.14 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.7Bright
45.7Bright
55.8Bright
65.8Bright
75.8Bright
85.9Bright
95.9Bright
106.0Bright
116.0Bright
126.0Intense
136.0Intense
146.1Intense
156.1Intense
166.1Intense
176.2Intense
186.2Intense
196.2Intense
206.3Intense
216.3Intense
226.3Intense
236.4Intense
246.4Intense
256.4Intense
266.5Intense
276.5Intense
286.5Intense
296.6Intense
306.6Intense
Planning a trip in September

Is September a good time to visit Bultfontein?

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

8.6
Sightseeing
1st-best month of the year
7.8
Beach & pool
1st-best month of the year

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

What to pack for Bultfontein in September

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

In September, Bultfontein sees daytime highs around 26°C and nights near 9°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

UV index in Bultfontein 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 Bultfontein peaks around January 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 13UV 15Jun 21UV 5
UV index (midday)Level
Jan15Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May6High
Jun5Moderate
Jul5Moderate
Aug7High
Sep9Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Bultfontein 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 Bultfontein is worst in June — around 17 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 1917 µg/m³Dec 116 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar10Good
Apr12Good
May16Moderate
Jun17Moderate
Jul17Moderate
Aug16Moderate
Sep16Moderate
Oct11Good
Nov6Good
Dec6Good
Location & terrain

Where is Bultfontein?

Bultfontein sits at 28.3°S, 26.1°E, 1,319 m above sea level, in South Africa. The nearest listed city is Wesselsbron, 53 km away.

Topography around Bultfontein

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

Within 3 km, the terrain around Bultfontein has only modest variations in elevation — a maximum elevation change of 40 m around an average of 1,319 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 129 m; within 80 km, significant variations in elevation — a maximum elevation change of 381 m.

The land around Bultfontein is covered by grassland (64%) within 3 km, grassland (62%) and cropland (36%) within 16 km, and grassland (58%) and cropland (37%) within 80 km.

3 km
40 m
16 km
129 m
80 km
381 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Wesselsbron 53 km · Winnie Mandela 55 km · Theunissen 56 km · Hoopstad 56 km · Welkom 67 km · Odendaalsrus 70 km · Virginia 73 km · Allanridge 77 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 Bultfontein (-28.2876°, 26.15°, elevation 1,319 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).